The height in feet of an arrow t seconds after it was shot into the air is given by the function: h(t)= -16t^2+288t+6
The arrow will hit the ground after seconds. (Round to the nearest second)

(Please explain!)

-16t²+288t+6

use t=-b+/-√b²-4ac÷2a

t= -288+/-√288²-4(-16)(6)÷2a

2+/-√2580=0

2+√2580= 53 seconds 2-√2580= 49 seconds

the arrow will hit the ground after 53 seconds or 49 seconds

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

brainliest