Answer:
<h2>x = 52.5 cm</h2><h2 />
Step-by-step explanation:
this is called a ratio and proportion or similar triangles
<u> 21 </u> = <u> 35 </u>
31.5 x
do cross multiply:
21 x = 31.5 (35)
x = 1102.5 / 21
x = 52.5 cm
Answer:
volume will be equal to 5,655 ft³
Step-by-step explanation:
diameter of swimming pool = 40 ft
depth increases from east-west lines is from 2 ft to 7 ft
so the average depth of the swimming pool can be calculated by
hence average depth comes out to be 4.5 m
volume of water in the pool will be equal to the volume of the pool
volume = 
= 
= 5,654.86 ft³
volume will be equal to 5,655 ft³ approximately
I already answered this question, if you look back in your questions you should find this answered along with another one. I'll do it again just in case you don't find it.
Answer:
{y,x} = {-4,-2}
Expanation:
Solve by Substitution :
// Solve equation [1] for the variable y
[1] y = 2x
// Plug this in for variable y in equation [2]
[2] -2•(2x) - 8x = 24
[2] - 12x = 24
// Solve equation [2] for the variable x
[2] 12x = - 24
[2] x = - 2
// By now we know this much :
y = 2x
x = -2
// Use the x value to solve for y
y = 2(-2) = -4
Answer:
D
Step-by-step explanation:
x+4y=8
4x+y=2
add
5x+5y=10
so system is
x+4y=8
5x+5y=10
