We know: length of a rectangle is 7m less than three times the width.
So let's set the length to l, width to w.
And we can get that l = 3w-7.
We also know that the area of the rectangle is 66 m^2.
Thus, l*w= 66.
So we have:
function 1: l=3w-7
function 2: l*w=66
plug function 1 to 2.
(3w-7)*w=66
3w^2-7w-66=0
w=6 and -11/3.
And the width of a rectangle can not be negative.
So: w=6.
Plug w=6 back to function 1 or 2, either way is correct and can give you the length. In this case, I will plug it back to function 1.
l=3*6-7=11.
So: the width of the rectangle is 6, and the length of the rectangle is 11.
<span>-1=3(w+14)-7
Use distributive property
-1=3w+42-7
Subtract 7 from 42
-1=3w+35
Subtract 35 from both sides
-36=3w
Divide 3 on both sides
Final Answer: -12=w</span>
The answer is $3.74
Hope this helps
I hope this helps you
3^2+3^2=y^2
2.3^2=y^2
y= 3 square root of 2
Answer:
X= -5
Step-by-step explanation:
do you need steps?
5x +7/2 = 3x/2 -14
10x+7/2 = 3x-28/2
2(10x+7) = 2(3x-28)
20x +14 = 6x - 56
20x -6x = -56 - (14)
14x = -70
x = -70/14
x = -5
