3 years ago

What is the quotient of 6 and Negative one-half? –12

Mathematics

1 answer:

Vikentia [17]3 years ago

4 0

Answer:

Step-by-step explanation:

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PLEASE HELP ASAP!!!!!!!!

steposvetlana [31]

Answer:

4.6.

Step-by-step explanation:

The rocket hits the ground when h(t) = 0. So

$-16t^{2} + 72t + 7 = 0$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

$-16t^{2} + 72t + 7 = 0$

$a = -16, b = 72, c = 7$

Then

$\bigtriangleup = 72^{2} - 4*(-16)*7 = 5632$

$t_{1} = \frac{-72 + \sqrt{5632}}{2*(-16)} = -0.1$

$t_{2} = \frac{-72 - \sqrt{5632}}{2*(-16)} = 4.6$

Time is a positive measure, so the answer is 4.6.

6 0

3 years ago

Jeff took his son to Great Clips to get his hair cut. His hair cut cost $9 with tax

agasfer [191]

Answer:

$10.80

Step-by-step explanation:

That’s the answer

5 0

3 years ago

Jim pays $75 per month for a cell phone plan plus $0.30 per minute beyond the first 1,000 minutes his bill was $105.60 last mont

oee [108]

105.60-75=35.60
35.60/.30=102
1000+102=1102. He used 1102 minutes

5 0

3 years ago

Read 2 more answers

Sarah deposits $2,000 at a bank at an interest rate of 4.5% per year. How much interest will she earn at the end of 3 years?

almond37 [142]

Answer:

270

Step-by-step explanation:

2000x4.5%x3

8 0

3 years ago

What is the surface area of a piece of pipe that is open at both ends, has a radius of 6 inches, and a height of 18 inches? (Use

Ratling [72]

i hope this helps you

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3 years ago