Triangle
16. kevin made a jewelry box with the
dimensions shown.
5 cm
10 cm
15 cm
what is the volume of the jewelry box?
a 750 cubic centimeters
b 225 cubic centimeters
© 150 cubic centimeters
0 75 cubic centimeters

A.

Step-by-step explanation:

Equation: V=lwh

5 × 10 × 15 = 750 cubic cm

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