Write an expression to model the perimeter of the rectangle. Length is x-9 and width is 3x-4. Part b The perimeter of the rectan
gle is 138. What is x. Plzz I will give you 100 points
2 answers:
Step-by-step explanation:
To find the perimeter of something, we add all of the measurements of the sides together.
A rectangle has 4 sides, this means we must double the algebraic hints given to us.
If we add them all up together it will look like this:
x-9+x-9+3x-4+3x-4=138
If we simplify it by collecting the like terms:
8x-26=138
We add 26 onto 138
8x=164
To find out what x equals, we divide by 8:
164÷8= 20.5
Answer:
x=20.5cm
x-9 is 11.5
3x-4 is 57.5
I know that you will not give 100 points but just wanted to help.
Answer:
A: P = 8x - 26
B: x = 20.5
Step-by-step explanation:
Part A
Equation
P = 2*(L + W)
Givens
Solution
- P = 2*(x - 9 + 3x - 4)
- P = 2*(x + 3x - 9 - 4)
- P = 2*(4x - 13)
- P = 8x - 26
Part B
Given
P = 138
Equation
P = 8x - 26
Solution
- 138 = 8x -26 Add 26 to both sides
- 138 + 26 = 8x Combine the left
- 164 = 8x Divide by 8
- x = 20.5 Answer
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Step-by-step explanation:
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Answer:
A 180-degree clockwise rotation about the origin followed by a translation 1 unit to the left.
Answer:
4x=90
X=90÷4
X=22.5
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5x=117
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X=23.4
So 23.4 is a larger angle