Hi There!
Answer: c. 7
Why: 84 / 7 = 12 and 49 / 7 = 7
Hope This Helps :)
Answer:
48
Step-by-step explanation:
x = -2 y =3
3x² - 2xy²
3(-2)² -2(-2)(3)²
square first
3*4 -2(-2)*9
multiplty from left to right
12-2(-2)*9
multiply from left to right again
12 -(-36) subtract using rule for integers that double minus is plus
12 + 36
48
first we work in the braces witch are these []
(-5) x 3 = -15
then multiply again
-15 x 2 = -30
Answer: -30
The surface area of a sphere of radius r is A = 4π*r^3.
Since the radius in this case is 8 cm (half the 17 cm diameter), the area of this sphere is
A = 4π(8 cm)^2, or 256π cm^2.
