Using the Pythagorean Theorem, you should get 45 [9 + 36]. Then, take the square root of 45 and simplify it to 3√5.
Answer:
9t + 8
Step-by-step explanation:
9t + (5+3)
Think of it like this. You have 9 oranges, 5 grapes, and 3 grapes. How many grapes and oranges do you have?
Math wise, we will have t representing oranges, and the normal numbers representing grapes. All you have to do is combine them using whatever sign separates them. If you need more help, let me know.
Mary is incorrect. Perimeter is not proportional to area. An example which you can use is garden A is an 8 by 1 rectangle. The perimeter is 18 while the area is 8. Graden B is a 4 by 4 square. The perimeter is 16 (less than garden A) while the area is 16 (two times more than garden B).
Answer:
SA = 105 in^2
Step-by-step explanation:
To find surface area, find the area of all the shapes and add it all together. This shape has 4 triangle faces. They are all the same. So we can find one of them and times by 4.
Area of a triangle:
A = 1/2b•h
= 1/2• 5 • 8
= 1/2 • 40
= 20
One triangle has area 20, so times by 4 (bc four triangles)
4•20
= 80
Area of square 5•5
= 25
Add the areas:
80 + 25
= 105 sq in
Answer:
11
Step-by-step explanation:
4x - y = 13 >>>> y = 4x - 13
2x + y = 17 >>>> y = -2x + 17
so
4x - 13 = -2x + 17
4x + 2x = 17 + 13
6x = 30
x = 5
y = 4x - 13 = 4(5) - 13 = 7
then
3y - 2x = 3(7) - 2(5) = 21 - 10 = 11
