12.03 feet is the right answer.
Answer:
y=4
Step-by-step explanation:
9y=36
first divide both sides by 9 (9y/9) and (36/9)
y=4
Now test that it is correct by replacing y with 4
9(4)=36
Indeed!
Answer:
He sold 100 rackets for $ 20
Step-by-step explanation:
To start, we have to make 2 equations, one that represents the number of rackets and the other the money
x + y = 500
x * 20 + y * 45 = 20000
we clear x in the first equation
x + y = 500
x = 500 - y
we replace x in the second equation with (500 - y)
x * 20 + y * 45 = 20000
(500 - y) * 20 + y * 45 = 20000
10000 - 20y + 45y = 20000
-20y + 45y = 20000 - 10000
25y = 10000
y = 10000/25
y = 400
we replace x in the first equation with the value obtained
x = 500 - y
x = 500 - 400
x = 100
He sold 100 rackets for $ 20
Answer:
4
Step-by-step explanation:
The square root of 16 is four since 4 x 4 is 16.
