Find the value of y that makes the equation y= 2/3 x-4 true when x= 9.

a 2
b 4
c 6
d 10

a)2

Step-by-step explanation:

y= 2/3x-4

y= 2/3(9)-4

y=18/3-4

y=6-4

y=2

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

the answer is 54 sq. ft. i just did this question, on odyssey ware, and it was right. make brainliest.