Answer: x=9,y=-1/3
Step-by-step explanation: This is for Q. 16
Rearrange terms to line up properly.
x-3y=10
x+3y=8
eliminate y terms
x=10
x=8 now add all like terms, remember it's a given that there's a one in
front of a variable.
2x=18 solve for x
x=9 now plug in the nine into one of the original eq.s and solve for y
9+3y=8
3y=-1
y=-1/3 always check solutions in both eq.s to vertify. they both work
Answers:
1) 56.33
2) 44.55
3) 22.75
4) 84.57
5) 71.92
6) 39.2
7) 73.6
8) 29.67
9) 26.91
<em>Hope this was helpful!</em>
<em>-Kai <3</em>
Just divide 150 by 200 to get the percentage.
150/200 = .75
Move the decimal point two places to the right to make it a percentage.
.75 = 75%
150 miles is 75% of 250 miles.
The equation for volume of a sphere is (4/3)(pi)(r)^3. So you would plug in he radius 9 into the equation. It would simplify to equal (4/3)(pi)(729). It simplifies further to equal (972)(pi)
