Step-by-step explanation:
Perimeter of a rectangle = 2l + 2w
where
l is the length
w is the width
From the question
The length is 3x + 7
The width is 2x + 2
The perimeter is
<h3>2( 3x + 7) + 2( 2x + 2)</h3>
Simplify
6x + 7 + 4x + 4
Group like terms
6x + 4x + 7 + 4
We have the final answer as
<h3>10x + 11</h3>
Hope this helps you
Answer:
x=-20
Step-by-step explanation:
Given
-6(x+7)= -4x - 2
First of all, we have to solve brackets
So,
-6x-42=-4x-2
To find the solution of this equation, we have to isolate x on one side of the equation.
Adding 4x on both sides
-6x-42+4x = -2-4x+4x
-2x-42 = -2
Adding 42 on both sides
-2x-42+42 = -2+42
-2x=40
Dividing both sides by -2
-2x/2 = 40/-2
x = -20
The equation has only one solution which is x=-20 ..
Answer:
Step-by-step explanation:
<u>Slope-intercept form:</u>
- y = mx + b, where m is slope and b is y-intercept
We see on the graph y-intercept is b = 6, point (0.6)
To find the slope we need a second point, choosing point (5, 1)
<u>Using slope formula:</u>
- m = (1- 6)/(5 - 0) = -5/5 = -1
<u>So the line is:</u>
Ok the formula for this is 2(lw +hw+hL)
2(30+35+42)=2(107)=214 square feet
She would need to be paid her allowance of $3 for the week and do 5 extra chores as well, to get a total of $13 for the CD
