Find the sople of a line perpendicular to y=3x +7

The slope of a perpendicular line would be -1/3

Step-by-step explanation:

In order to find the perpendicular slope, we need to negate the current slope and then flip it.

The negated form of 3 is -3.

Then when flipped, it becomes -1/3.

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 a.

135 and 80

step-by-step explanation: