Which sets of side lengths could form a triangle? A 3 centimeters, 4 centimeters, 9 centimeters B 3 centimeters, 6 centimeters, 9 centimeters C 4 centimeters, 5 centimeters, 9 centimeters D 4 centimeters, 6 centimeters, 9 centimeters​

3.how is solving radical equations different than solving linear equations?

step-by-step explanation:

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

step-by-step explanation:

your answer is a

the answer is c

step-by-step explanation: i took a test with this question on it