Answer: y = -2 - 2 * (x - 1).
Step-by-step explanation: The pattern is a linear function with a slope of -2 and an intercept of -2. The slope of a line is the change in y over the change in x. In this case, the change in y is -2 and the change in x is 1. Therefore, the slope is -2/1 = -2. The intercept is where the line crosses the y-axis, which is at y = -2 when x = 1. Therefore, the equation of the line is y = mx + b where m is the slope and b is the intercept. Substituting m = -2 and b = -2 gives us y = -2 - 2 * (x - 1).
Hope this helps, and have a great day!
Bella is deciding between two parking garages. Garage A charges an initial fee of $7 to
park plus $3 per hour. Garage B charges an initial fee of $3 to park plus $4 per hour.
Let A represent the amount Garage A would charge if Bella parks for t hours, and let
B represent the amount Garage B would charge if Bella parks for t hours. Write an
equation for each situation, in terms of t, and determine the hours parked, t, that
would make the cost of each garage the same.
Answer:
Step-by-step explanation:
The equation for the cost of parking in Garage A for t hours is:
A = 3t + 7
The equation for the cost of parking in Garage B for t hours is:
B = 4t + 3
To find the number of hours parked, t, that would make the cost of each garage the same, we can set the two equations equal to each other and solve for t:
3t + 7 = 4t + 3
Subtracting 3t from both sides, we get:
7 = t + 3
Subtracting 3 from both sides, we get:
4 = t
Therefore, if Bella parks for 4 hours, the cost of parking in Garage A and Garage B will be the same.
To verify, we can substitute t = 4 into the two equations:
A = 3(4) + 7 = 19
B = 4(4) + 3 = 19
So, if Bella parks for 4 hours, the cost of parking in Garage A and Garage B will be $19.
Answer:
Bella is deciding between two parking garages. Garage A charges an initial fee of $7 to
park plus $3 per hour. Garage B charges an initial fee of $3 to park plus $4 per hour.
Let A represent the amount Garage A would charge if Bella parks for t hours, and let
B represent the amount Garage B would charge if Bella parks for t hours. Write an
equation for each situation, in terms of t, and determine the hours parked, t, that
would make the cost of each garage the same.
A = $7 + $3
B = $3 + $4
the sum of two numbers is 30. The difference between the two numbers is 15. what are the two numbers?
In statistics how do you find the range in a data set from a box and whisker plot
To find the range of a data set from a box and whisker plot, you can use the whiskers of the plot. The whiskers represent the minimum and maximum values of the data set, so the range can be calculated by subtracting the minimum value from the maximum value.
What's is whisker plot?A whisker plot, also known as a box and whisker plot, is a graphical representation of the distribution of a set of data. It displays a summary of the minimum, maximum, median, and quartiles of the data set.
A typical whisker plot consists of a rectangular box with a vertical line inside, which represents the median of the data set. The lower and upper edges of the box represent the first and third quartiles, respectively. The length of the box thus represents the interquartile range (IQR), which is a measure of the spread of the middle 50% of the data.
In statistics, the range of a data set can be found from a box and whisker plot by looking at the endpoints of the whiskers.
The whiskers in a box and whisker plot extend from the box to the smallest and largest data points within a certain range of the median. The range of the data set is simply the difference between the smallest and largest data points.
To find the range of the data set from a box and whisker plot, simply identify the endpoints of the whiskers and find the difference between them. Note that the whiskers may be labeled with the actual values of the data points or labeled with a multiple of the interquartile range (IQR), which is the distance between the first and third quartiles of the data set.
It's worth noting that the range is a very basic measure of the spread or dispersion of a data set and is sensitive to outliers. Other measures of spread, such as the interquartile range, variance, or standard deviation, may provide more robust and informative summaries of the data.
Hence, the method to plot whiskers in a data range is provided.
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if y varies jointly with the square of x and inversely as z, what is the change in y when both x and z are tripled
Step-by-step explanation:
y = x^2 / z now triple x and z
y = (3x)^2 / 3z = 9x^2 / 3z = 3 * x^2 / z <==== this is 3 times the original
y is tripled
what 3y+3x+4y-6+9+4x
1. Your stock broker charges a 7% fee every time stocks are bought and sold. How much
profit would you earn from the sale of 250 shares that are worth $4.50 each.
To determine the profit earned from selling 250 shares worth $4.50 each with a 7% fee charged by the stock broker, we need to calculate the total revenue earned and the total cost incurred.
Total revenue earned from selling 250 shares at $4.50 per share:
Revenue = 250 x $4.50 = $1,125
Total cost incurred for buying and selling the shares, including the 7% fee charged by the broker:
Cost = 2 x 250 x $4.50 x 0.07 = $157.50
Here, we are multiplying the number of shares (250) by the price per share ($4.50) to get the total value of the shares. Then we multiply this by 2, since we need to account for both the buying and selling transactions, and then multiply by the broker fee rate of 7% (0.07) to get the total cost incurred.
Therefore, the profit earned from the sale of 250 shares is:
Profit = Revenue - Cost
Profit = $1,125 - $157.50
Profit = $967.50
Hence, the profit earned from selling 250 shares worth $4.50 each with a 7% fee charged by the stock broker is $967.50.
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Find an appropriate trigonometric substitution of the form x = f(t) to simplify the integral.
Answer:
To find an appropriate trigonometric substitution of the form x = f(t) to simplify the integral, we need to look for expressions involving square roots of the form:
sqrt(a^2-x^2)
sqrt(a^2+x^2)
sqrt(x^2-a^2)
If we have sqrt(a^2-x^2), we can use the substitution x = a sin(t) or x = a cos(t) depending on which one of them makes the expression simpler.
If we have sqrt(a^2+x^2), we can use the substitution x = a tan(t) or x = a sec(t).
If we have sqrt(x^2-a^2), we can use the substitution x = a sec(t) or x = a tan(t).
It is important to keep in mind the trigonometric identities and the Pythagorean theorem to simplify the integrals after substituting.
Step-by-step explanation:
hope its help <:
Please help, I got this and I don’t know it
By rewritting the exponential equation, we can see that the correct options are B and C.
Which equations show Nelson's balance after t years?We know that the balance is modeled by the exponential equation below:
[tex]A = 328.23\times e^{0.045*(t - 2)}[/tex]
Now we want to see which of the other equations are equivalent to this one, so we need to rewrite this equation, so let's do that.
First we can rewrite the second part to get:
[tex]A = 328.23\times e^{0.045\times(t - 2)}\\\\A = 328.23\times(e^{-2*0.045*}\times e^{0.045\times t})\\\\A = 300\times e^{0.045\times t}[/tex]
So that is an equivalent equation.
We also can keep rewritting this to get:
[tex]A = 300\times e^{0.045\times t}\\\\A = 300\times(e^{0.045})^t\\\\A = 300\times(1.046)^t[/tex]
The correct options are B and C.
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Quick Loans will loan you $600 with the understanding that you will repay them $665 in two weeks. What is the APR for this loan?
A turtle and a snail are 300 feet apart when they start moving toward
each other. The turtle walks 5 feet per minute, and the snail crawls 1
foot per minute.
Answer:
Step-by-step explanation:
It will take 50 minutes for the turtle and snail to meet.
because they are all moving at feet per minute we can create a formula
total feet = (turtle feet per minute) + (snail feet per minute)
300 = 5m +1m
combine like terms
300 = 6m
divide both sides by 6
50=m
Answer:
See below.
Step-by-step explanation:
Let's denote the distance the turtle walks by x. Then the distance the snail crawls would be 300 − x.
We can now set up an equation to represent the situation. Since distance = rate × time, we have
x/5 = (300 - x)/1
Solving for x, we get
x = 250
So the turtle walks 250 feet before meeting the snail, and the snail crawls the remaining 50 feet.
To find the time it takes for them to meet, we can use either of the two distances and its corresponding rate:
time = distance/rate
For example, using the turtle's distance
time = 250/5 = 50 minutes
Therefore, it takes 50 minutes for the turtle and the snail to meet.
You are scheduled to receive annual payments of R15 000 for each of the next 13 years. The discount rate is 9%. What is the difference in the present value, if you receive these payments at the beginning rather than at the end of each year?
Answer:
Step-by-step explanation:
To solve this problem, we need to calculate the present value of the cash flows in both cases - the case where the payments are made at the beginning of each year and the case where the payments are made at the end of each year - and compare the two values.
First, let's calculate the present value of the cash flows when payments are made at the end of each year. We can use the formula for the present value of an ordinary annuity:
PV = PMT x [(1 - (1 / (1 + r)n)) / r]
where PV is the present value, PMT is the payment amount, r is the discount rate, and n is the number of periods.
In this case, PMT = R15 000, r = 9%, and n = 13. Plugging in these values, we get:
PV = R15 000 x [(1 - (1 / (1 + 0.09)^13)) / 0.09] = R141,798.06
Now let's calculate the present value of the cash flows when payments are made at the beginning of each year. To do this, we can use the formula for the present value of an annuity due:
PV = PMT x [(1 - (1 / (1 + r)n)) / r] x (1 + r)
where PV is the present value, PMT is the payment amount, r is the discount rate, n is the number of periods, and (1 + r) adjusts the formula for the fact that payments are being made at the beginning of each year.
In this case, PMT = R15 000, r = 9%, and n = 13. Plugging in these values, we get:
PV = R15 000 x [(1 - (1 / (1 + 0.09)^13)) / 0.09] x (1 + 0.09) = R153,094.97
So the present value of the cash flows when payments are made at the beginning of each year is R153,094.97, and the present value of the cash flows when payments are made at the end of each year is R141,798.06. Therefore, the difference in present value is:
R153,094.97 - R141,798.06 = R11,296.91
So, receiving the payments at the beginning rather than at the end of each year would result in a present value that is R11,296.91 higher.
pls help me with this!!!!!!!!!
Answer:
Supplementary Angles: The angles 1 & 2 are supplementary angles, as, when combined together, their total angle measurement is 180°, or a straight line. Supplementary angles, by definition, is either two angles in which, when combined, the sum is equal to 180°.
Adjacent Angles: The angles 1 & 2 are adjacent angles, as they share a common side and vertex. Vertexes, by definition is the corner point.
Why it is not:
Complementary Angles: Complementary angles suggest that, when two angles are combined together, their total angle measurements is 90°, or it creates a right angle. In this case, the total measurements of the combination of ∠1 & ∠2 is a straight line, or 180°. Therefore, complementary angles is not your answer.
Vertical Angles: Vertical angles suggest that, when there are two angles, they are directly opposite of each other. Vertical angles would share the same angle measurements.
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How many feet of fencing will be needed to enclose this dog pen? 4.8ft by 4yd
Answer:
19.2 ft
Step-by-step explanation:
I’ll give branniest for the correct answer
Two skaters are practicing at the same time on the same rink. A coordinate grid is superimposed on the ice. One skater follows
the path y = - 3x + 8, while the other skater follows the curve y= - 2x^2 + 7x. Find all the points where they might collide if they
are not careful.
Answer: To find the points where the two skaters might collide, we need to find the values of x and y that satisfy both equations:
y = -3x + 8
y = -2x^2 + 7x
We can set the two equations equal to each other and solve for x:
-3x + 8 = -2x^2 + 7x
This simplifies to:
2x^2 - 10x + 8 = 0
Dividing both sides by 2, we get:
x^2 - 5x + 4 = 0
Factoring the left side, we get:
(x - 1)(x - 4) = 0
So the solutions for x are x = 1 and x = 4.
To find the corresponding values of y, we can substitute these values of x into either equation. Let's use y = -3x + 8:
When x = 1, y = -3(1) + 8 = 5
When x = 4, y = -3(4) + 8 = -4
Therefore, the two skaters might collide at the points (1, 5) and (4, -4).
Step-by-step explanation:
If Planet I is 31.1 million miles farther from the sun than Planet II, then Planet III is 24.6 million miles farther from the sun than Planet I. When the total of the distances for these three planets from the sun is 197.8
million miles, how far away from the sun is Planet II?
After solving the equations e know that Planet II is 35 million miles away from the sun.
What are equations?The equals sign is a symbol used in mathematical formulas to denote the equality of two expressions.
An equation is a mathematical statement that contains the symbol "equal to" between two expressions with identical values.
As in 3x + 5 = 15, for example.
There are many different types of equations, including linear, quadratic, cubic, and others.
The three primary forms of linear equations are point-slope, standard, and slope-intercept.
So, let x be the separation between planet I and the sun.
Planet II's distance from the sun is x-30.2.
Planet iii's distance from the sun is equal to x+24.8.
x + x-30.2 + x+24.8 = 190.2
Mix related phrases to find x.
3x - 5.4 = 190.2
3x = 195.6
x = 65.2
65.2 million miles separate planet I from the sun.
Planet II is 35 million miles from the sun or 65.2-30.2.
Planet iii is 90 million miles from the sun (65.2 + 24.8 = miles).
Therefore, after solving the equations e know that Planet II is 35 million miles away from the sun.
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the graph y = arctan x is transformed to y = a arctan(b(x-c)) + d by a horizontal compression of 1/2 and translation of pi/3 units down. the new equation is:
y = 1 arctan(1/2(x-0)) - [tex]\frac{\pi }{3}[/tex], which simplifies to y = arctan(1/2(x-[tex]\frac{\pi }{3}[/tex])). So correct option is B.
Describe Equation?An equation is a mathematical statement that uses symbols and mathematical operations to show that two quantities are equal. Equations are used to represent a wide range of relationships and can be used to solve problems and make predictions.
The original equation is y = arctan x. To horizontally compress the graph by 1/2, we need to replace x with 2x. The equation becomes y = arctan(2x).
To translate the graph down by [tex]\frac{\pi }{3}[/tex] units, we need to subtract [tex]\frac{\pi }{3}[/tex] from y. The equation becomes y = arctan(2x) - [tex]\frac{\pi }{3}[/tex].
So far, we have y = arctan(2x) - [tex]\frac{\pi }{3}[/tex]. To match the form y = a arctan(b(x-c)) + d, we need to further transform the equation.
We can write 2x as 1/2(4x), so the equation becomes y = arctan(1/2(4x)) - [tex]\frac{\pi }{3}[/tex].
Comparing this with y = a arctan(b(x-c)) + d, we have a = 1, b = 1/2, c = 0, and d = -[tex]\frac{\pi }{3}[/tex].
Substituting these values, we get y = 1 arctan(1/2(x-0)) - [tex]\frac{\pi }{3}[/tex], which simplifies to y = arctan(1/2(x-[tex]\frac{\pi }{3}[/tex])).
Therefore, the answer is B. y= arctan(1/2(x-[tex]\frac{\pi }{3}[/tex])).
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The complete question is:
The equation y = 1 arctan(1/2(x-0)) -π/3 can be written as y = arctan(1/2(x-π/3)).
What is equation ?
An equation is a mathematical statement that proves the equality of two quantities by using symbols and mathematical procedures. Equations can be used to express a wide variety of relationships, solve issues, and generate predictions.
The first formula is y = arctan x. We must swap out x for 2x in order to horizontally compress the graph by half. y = arctan is the new formula.(2x).
We must deduct π/3 from y in order to scale the graph downward by π/3 units. Y = arctan(2x) -π/3 is the new equation.
y = arctan(2x)-π/3 is what we now have. We need to further alter the equation so that it has the form y = an arctan(b(x-c)) + d.
Since 2x can be written as 1/2(4x), the equation changes to y = arctan(1/2(4x)) -π/3.
We have a = 1, b = 1/2, c = 0, and d = π/3- when y = an arctan(b(x-c)) + d is compared to this.
The result of substituting these numbers is y = 1 arctan(1/2(x-0)) -π/3, which may be written as y = arctan(1/2(x-π/3)).
y= arctan(1/2(x-π/3)), hence the solution is B.
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Line graph y=-3/2x+4
Okay so hopefully. I got the equation right. But I believe this is it
Solve for x. Round to the nearest tenth.
x =
(30 points)
The value for x in the given triangle is 36.81. The solution has been obtained by using the concept of trigonometry.
What is trigonometry?
Right-angled triangles, including their sides, angles, and connections, are studied in the branch of mathematics known as trigonometry.
We are given a right angled triangle with perpendicular 32 and base x.
We know that tan θ is the ratio of triangle's perpendicular to its base.
Here, θ = 41°
So, we get
⇒ tan 41° = [tex]\frac{32}{x}[/tex]
⇒ 0.8693 = [tex]\frac{32}{x}[/tex]
⇒ 0.8693x = 32
⇒ x = 36.81
Hence, the value for x in the given triangle is 36.81.
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Find the least common denominator of 1/6 and 5/9
Answer:
least common denominator = 18
Step-by-step explanation:
19. Fiona rolls a pair of six-sided cubes, each numbered from 1-6, at the same time. What is the probability that Fiona will roll a 6 and a 4?
the probability of rolling a 6 and a 4 is 1/36 or 2.78%.
The probability of rolling a 6 and a 4 is calculated by taking the number of outcomes that would result in rolling a 6 and a 4 divided by the total number of possible outcomes. To calculate the probability of rolling a 6 and a 4 on a standard six-sided die, we first need to determine the number of outcomes that would result in rolling a 6 and a 4. There is only one way to roll a 6 and a 4 in that order, since each roll is independent of the other and the order matters.There is only one possible outcome that would result in rolling a 6 and a 4 (6,4). There are a total of 36 possible outcomes when rolling two six-sided cubes (6x6). Therefore, the probability of rolling a 6 and a 4 is 1/36 or 2.78%.
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You plan to enter a song writing contest your song must be exactly 3 1/2 minutes long you have a song last for 4 1/5 minutes how many minutes do you need to cut from the song?
You need to cut [tex]\frac{7} {10}[/tex] minutes from the song for it to be exactly 3 1/2 minutes.
What is unitary methοd?The unitary technique can be used tο calculate the value οf a single unit frοm the values οf multiple units and the value οf multiple units frοm the values οf single units.
This methοd is frequently emplοyed in math calculatiοns. Yοu can use this methοd tο sοlve issues cοncerning ratiο and prοpοrtiοn, algebra, geοmetry, etc.
The amount of time needed to cut is the difference between these two mixed fraction:
[tex]$ \Rightarrow 4 \frac{1}{5} - 3 \frac{1}{2}[/tex]
[tex]$ \Rightarrow \frac{21}{5} - \frac{7}{2}[/tex]
The LCM of 5 and 2 is 10
[tex]$ \Rightarrow \frac{42- 35} {10}[/tex]
[tex]$ \Rightarrow \frac{7} {10}[/tex]
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Complete question:
You plan to enter a song writing contest. Your song must be exactly 3 1/2 minutes long. You have a song that lasts for 4 1/5 minutes. How many minutes do you need to cut from the song?
13/103/107/1017/10The height of an object launched into the air can be modeled by the graph shown.
When does the object return to the ground?
Answer:
9 seconds
Step-by-step explanation:
right side of the graph touches the x axis at 9
For the period beginning October 10, the average daily balance on Perry's credit card was
$714. If the balance at the end of the cycle was $506 and the APR on the card is 8%, what
was the balance due on November 10?
Answer:
The average daily balance on Perry's credit card for the period beginning October 10 was $714, and the balance at the end of the cycle was $506. To calculate the balance due, we need to know the length of the billing cycle. Assuming a 30-day billing cycle, we can use the average daily balance method to calculate the interest charged. The formula for interest charged is: Average Daily Balance x APR x Days in Billing Cycle / 365. Plugging in the numbers, we get: $714 x 0.08 x 30 / 365 = $4.68. Adding this interest to the ending balance of $506, the total balance due is $510.68.
Need help will give brainliest and 5 stars for fast response.
Because the function is one-to-one we know that it is invertible, from that we conclude:
f⁻¹(7) = 0( f(0) )⁻¹ = 1/7.How to evaluate the inverse of f(x)?If a function is one-to-one, then the function is invertible in its domain, if we define f⁻¹(x) as the inverse, then we can define two relations:
f( f⁻¹(x)) = x
And that if:
f(x)= y
then:
f⁻¹(y) = x
Here we know that:
f(0) = 7
Then the inverse evaluated in 7 must give 0, this is:
f⁻¹(7) = 0
And the second expression is:
( f(0) )⁻¹
This is not an inverse function, this is the inverse of the function evaluated in 0, then we will get:
( f(0) )⁻¹ = ( 7 )⁻¹ = 1/7.
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Note: For questions 13–21, remember to show all of the steps that you use to solve the problem. You can use the comments field to explain our work. Your teacher will review each step of your responses to ensure your receive proper credit for your answers.
Note: Your teacher will grade your response to this question to ensure you receive proper credit for your answer.
Sarah is making a scale drawing of a painting that is 48 in. wide by 120 in. high. Her paper is 12 in. wide and 24 in. tall. She decides to use the scale 1 in. = 4 in. Is this a reasonable scale?
SOMEONE, PLEASE HELP! I WILL MAKE BRAINLIST!!!
Answer:
This isn't a reasonable scale
Step-by-step explanation:
Using the scale 1 in. = 4 in., the width of the scaled down painting will be:
48 in. ÷ 4 = 12 in.
And the height of the scaled down painting will be:
120 in. ÷ 4 = 30 in.
So the scaled down painting will be 12 in. wide and 30 in. tall. Since Sarah's paper is 12 in. wide and 24 in. tall, the scaled down painting will fit within the paper's width but will be taller than the paper.
Therefore, the scale is not reasonable because the scaled down painting will not fit within the dimensions of Sarah's paper.
We are learning about evaluating inverse trig functions, i have 0 clue what to do please help
AB has a length of 15, angle A is approximately 36.87 degrees and angle B is approximately 53.13 degrees.
EquationsWe can use the Pythagorean theorem to find the length of AB:
AB² = AC² + BC²
AB² = 9² + 12²
AB² = 81 + 144
AB² = 225
AB = √225
AB = 15
So, AB has a length of 15.
To find angle A, we can use the inverse tangent function:
tan(A) = opposite/adjacent = AC/BC = 9/12 = 3/4
A = tan⁻¹(3/4) ≈ 36.87°
So, angle A is approximately 36.87 degrees.
To find angle B, we can use the fact that the three angles in any triangle add up to 180 degrees:
B = 90 - A = 90 - 36.87 ≈ 53.13°
So, angle B is approximately 53.13 degrees.
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Set up and solve a proportion for the following application problem. If 5 pounds of grass seed cover 355 square feet, how many pounds are needed for 6035 square feet?
Let x be the number of pounds needed for 6035 square feet.
We can set up a proportion between the pounds of grass seed and the square feet covered:
5 pounds / 355 square feet = x pounds / 6035 square feet
To solve for x, we can cross-multiply and simplify:
5 pounds * 6035 square feet = 355 square feet * x pounds
30175 = 355x
x = 30175 / 355
x ≈ 85.07
Therefore, approximately 85.07 pounds of grass seed are needed for 6035 square feet
can someone help me please.
step by step please
here is the picture
For the given function f(x) = ⁿ√p(x), The Domain depends on the value of n and The Domain is all real numbers if n is ODD.
What is the definition of a function?
In mathematics, a function is a relation between a set of inputs (also known as the domain) and a set of possible outputs (also known as the range) with the property that each input is associated with exactly one output.
In other words, a function takes an input value, performs a specific operation or set of operations on it, and produces an output value. It can be represented by a rule, formula, or graph that relates each input to its corresponding output.
Now,
The domain of the function f(x) = ⁿ√p(x) depends on the value of n.
If n is odd, then the function is defined for all real numbers, and the domain is all real numbers.
If n is even, then the function is defined only for non-negative real numbers, and the domain is all non-negative real numbers.
Therefore, the statement "The Domain is all real numbers" is not always true for the function f(x) = ⁿ√p(x). The correct statements are:
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If angle PQR = 26, find angle PQS
Answer choices:
A. 3
B. 13
C. 23
D. 33
The measure of angle PQS is of 23º, hence the correct option is given by option C.
What does the angle addition postulate state?The angle addition postulate states that if two angles share a common vertex and a common angle, forming a combination, the measure of the larger angle will be given by the sum of the smaller angles.
In the context of this problem, the angle PQR is the combination of angles PQS and SQR, hence the equation is given as follows:
m < PQR = m < PQS + m < SQR.
Replacing the measures into the equation, the value of x is obtained as follows:
5x + 8 + 2x - 3 = 26
7x = 21
x = 3.
Then the measure of angle PQS is obtained as follows:
PQS = 5(3) + 8 = 15 + 8 = 23º.
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can someone please prove this
The proof that ΔABC ≅ ΔDCB (congruent) in a parallelogram is because they are alternate interior angles.
How to prove alternate interior angles?If AABC is a parallelogram, then AB and AC are parallel. Therefore, angle BAC is equal to angle BDC since they are alternate interior angles.
Similarly, angle ABC is equal to angle ADC since they are also alternate interior angles.
Now, using the angle-angle-side (AAS) postulate to show that ΔABC and ΔDCB are congruent.
Since angle BAC = angle BDC and angle ABC = angle ADC, angle A = angle D, angle B = angle C, and side AB = side DC.
Therefore, ΔABC ≅ ΔDCB.
Find out more on alternate interior angles here: https://brainly.com/question/24839702
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Image transcribed:
8. Prove ΔABC≅ΔDCB (parallelogram)