The function h(t)=-16t2+32t+128 represents the height of a cnnoj ball in feet t seconds after it is shot from a cannon. how many seconds does it take the cannonball to hot its target on thr grownd

4 seconds

Step-by-step explanation:

To solve this problem you will use the quadratic formula: .

Identify the a, b, and c values of the given quadratic equation:

Substitute these values into the quadratic formula.

Now split this into two equations.

Positive case:

Negative case:

Since time cannot be negative, the cannonball takes 4 seconds to hit its target on the ground.

3201

step-by-step explanation:

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