Answer:
x=8
Step-by-step explanation:
-2x+2-7x=-70
Minus two from each side.
-2x-7x=-72
Combine like terms.
-9x=-72
Divide -9 from each side.
x=8
3x-6y=2 (label equation 1)
5x+4y=1 (label equation 2)
-6y=-3x+2 (rearranged equation 1)
y=1/2x-1/3 (label equation 3)
substitute equation 3 into equation 2
5x+4(1/2x-1/3)=1
5x+2x-4/3=1
15x+6x-4=3 (multiplied everything by 3)
21x-4=3
+4 +4
21x=7
x= 7/21
x=1/3
sub x=7/21 into equation 3
y= 1/2(1/3) -1/3
y= -1/6
Therefore x=1/3 and y= -1/6
Answer:
150 thousand is the money
Step-by-step explanation:
search it up
So 0.081 x=38,900 so x (#sold to date) = 480,247 would be the answer.
Answer:
(0,0) and r=3
Step-by-step explanation:
To find the radius and center rewrite the equation in vertex form 
.
First move x and y to the other side so they have positive signs. Then move 9 across to the other side too.
Here you can see there is no h or k meaning h=0 and k=0. The radius is the square root of 9 which is 3.
