1) Marnie pays $0.06 per kilowatt-hour of electricity.
2)Marnie budgeted $72 for her electricity.
3)You are supposed to find the greatest number of kilowatt-hours Marnie can use and stay within her budget of $72.
Answer:
x=2
y=3
Step-by-step explanation:
y=−2x+7
y=5x−7
Set the two equations equal since they are both equal to y
−2x+7
=5x−7
Add 2x to each side
-2x+7+2x = 5x-7+2x
7 = 7x-7
Add 7 to each side
7+7 = 7x-7+7
14 =7x
Divide by 7
14/7 = 7x/7
2 =x
Now find 7
y = 5x-7
y = 5(2) -7
y = 10-7
y = 3
Answer:
Option (1) is correct.
The product of 
is 
Step-by-step explanation:
Given,
We have to find the product of above,
We have to multiply each term as ,
can be written as,
When we multiply each term we get,
These terms are same as we have filled in table below.
On adding like terms we get,
Thus, the product of 
is
Perimeter is legnth +legnth + width + width or
P=2L+2W
L=2W
subsitute L=2W for L in P=2L+2W
P=2(2W)+2W
P=4W+2W
P=6W
we know that Perimiter=30 so
30=6W
divide both sides by 6
5=Width
subsitute W=5 for W in L=2W
L=2(5)
L=10
to check
10=2(10)+2(5)
30=20+10
30=30
checks
Legnght=10
Width=5
Answer:
see page for answer........
