P=2l+2w
W=7+3l
So substitute into the original equation
P=2l + 2(7+3l)
78=2l +14 + 6l
-14 -14
—————-
64=8l
8=length
W=7+3l
= 7+3(8)
=7+24
=31
Check your work
Perimeter=8+8+31+31
=78
Hope this helps
Answer:
The number is 150
Step-by-step explanation:
Is means equals and of means multiply
60 % * N = 90
.60 N = 90
Divide each side by .6
N = 90/.6
N =150
Answer:
$40.50
Step-by-step explanation:
9% of 450 is 40.5
Answer:
C. x = 5, y = 7
Step-by-step explanation:
Diagonals of a parallelogram bisects each other. Therefore:
, and,

✔️To find the value of x, substitute y = (x + 2) in
.
Thus:



Subtract x from each side


✔️To find y, substitute x = 5 in
.
Thus:



Answer:
the equivalent expression is 0.88(x)
Step-by-step explanation:
Given that
There is 12% off on the total purchase price
Based on the above information
The expression that used the given terms i.e.
b - 0.12b
i.e.
1 - 0.12
= 0.88(x)
Hence, the equivalent expression is 0.88(x)