Answer:
63 gallons.
Step-by-step explanation:
If 30% of water is used outdoors, that leaves 70% to be used indoors. Since an average person uses 90 gallons, all we need to do is fine 70% of 90 gallons. To do this, we have to multiply 90 by 0.7:
90 * 0.7 = 63
In conclusion, 63 gallons of water are used indoors.
Answer:
13 and 8
Step-by-step explanation:
a-b = 5
==> a = b+5
a^2 + b^2 = 233
plug in a = b+5: (b+5)^2 + b^2 = 233
b^ + 10b + 25 + b^2 = 233
2b^2 + 10b -208 = 0
use the quadratic formula:
b = 8 or -13 (-13 doesn't work cuz it asks for positive numbers)
so if b = 8, then a = 5+b = 5+8 = 13
Let the dimensions of the first rectangle be L and W. Then L*W = 48 in^2.
If we multiply both dimensions of this first rectangle by scale factor f, we get
f*L * f^W = 12 in^2. Our job is to determine the scale factor, f.
Note that f^2*L*W = 12 in^2, and that LW = 48 in^2.
Therefore, the above equation becomes f^2*(48 in^2) = 12 in^2.
Dividing both sides by (48 in^2), we get f^2 = 1/4.
Solving for the scale factor, we get f = √(1/4) = 1/2.
The scale factor is 1/2.
Answer:he would pay 156
Step-by-step explanation:i did the math
