At time t = 0 a ball is thrown straight up from a height of 48 metres above the ground. After t seconds its height h, in metres, above the ground is given by h = 48 + 16 − 4^2.

) What are the possible values for t?
b) Calculate the maximum height of the ball above the ground. c) How long does it take the ball to return to the ground level? d) Determine at what time the ball is at the height of 28 m.

it's d.

step-by-step explanation:

because: -1(4x + 1y) +2 (1x-3y) distribute each number into the parenthesis.

then you would get: -4x - 1y + 2x -6y combine like terms

and get: 2x -7y

hope my answer has you if not then i'm sorry.

the answer is 45 i just did it on oddesy ware

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

1/2*qr*rs

step-by-step explanation: