21 x 9 = 9 x 21 is the commutative property.
Answer:
272
Step-by-step explanation:
The formula is 2(LxW) + 2(LxH) + 2(WxH)
2(16 x 4) = 128
2(16 x 4) = 128
2(4 x 4) = 16
16 + 128 + 128 = 272
Answer:
h = 64 feet
Step-by-step explanation:
If you graph the function you see that 64 feet is the maximum of the parabola so this is the max height that the projectile reaches.
18 girls
Half of the students volunteer
15 don't -- so the other half must be 15 as well making there 30 students in the class.
If 12 are boys, then 30(students in class) - 12 (boys) = 18 girls
