The function h(t) = –16t2 + 28t + 500 represents the height of a rock t seconds after it is propelled by a slingshot. what does h(3.2) represent? the height of the rock 3.2 seconds before it reaches the ground the time it takes the rock to reach the ground, or 3.2 seconds the time it takes the rock to reach a height of 3.2 meters the height of the rock 3.2 seconds after it is propelled

Let

t------> the time in seconds

h----> the the height of a rock after it is propelled by a slingshot in meters

we know that

For

Find the value of h(t)

therefore

the answer is the option

the height of the rock seconds after it is propelled

see the attached figure to better understand the problem

jml angle lkj & angle mj = lm

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb