Answer:
89
Step-by-step explanation:
Given that Wendy took 2 tests and scored, 77 and 80 respectively, let x represent the grade of Wendy's third test.
To get an average grade of 82, let's generate an equation to find x (Wendy's grade on her third test).
Average grade = sum of all 3 grades all over 3
![82 = \frac{77 + 80 + x}{3}](https://tex.z-dn.net/?f=%2082%20%3D%20%5Cfrac%7B77%20%2B%2080%20%2B%20x%7D%7B3%7D%20)
![82 = \frac{157 + x}{3}](https://tex.z-dn.net/?f=%2082%20%3D%20%5Cfrac%7B157%20%2B%20x%7D%7B3%7D%20)
Multiply 3 by both sides
![82*3 = \frac{157 + x}{3}*3](https://tex.z-dn.net/?f=%2082%2A3%20%3D%20%5Cfrac%7B157%20%2B%20x%7D%7B3%7D%2A3%20)
![246 = 157 + x](https://tex.z-dn.net/?f=%20246%20%3D%20157%20%2B%20x%20)
Subtract 157 from each side of the equation
![246 - 157 = 157 + x - 157](https://tex.z-dn.net/?f=%20246%20-%20157%20%3D%20157%20%2B%20x%20-%20157%20)
![89 = x](https://tex.z-dn.net/?f=%2089%20%3D%20x%20)
Wendy must score 89 on her third test to have an average of 82.
745 centimeters is your answer. do you want me to extend your answer? be specific on the question :))))
Answer:
7(4 + y)
Step-by-step explanation:
The answer should be 4, 4 can go into all of these numbers
A parallelogram is a shape with 4 sides where the 2 opposite sides are congruent or has the same measurements. The perimeter of a parallelogram is expressed as:
P = 2l + 2w
We take AD as the length, l, and AB as the width, w.
92 = 2(2w + 7) + 2w
92 = 4w + 14 + 2w
78 = 6w
w = 13 cm
l = 2w+7 = 33 cm