Tom and Kathy want to borrow $35,000 in order to build an addition to their home.

Mathematics

1 answer:

Novosadov [1.4K]3 years ago

7 0

Answer:

I think its C you can hate how much you want if I'm wrong im more of a no tester when I get an answer i check but not online

Step-by-step explanation:

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Solve the following quadratic by

Ainat [17]

Answer:

{x = -1 + √13 , x = -1 - √13}

Step-by-step explanation:

Completing the square:

f(x) = x² + 2x - 12

= x² + 2x + 1 - 1 - 12

= (x² + 2x + 1) - 1 - 12

= (x + 1)² - 13

Solving:

f(x) = 0

⇔ (x + 1)² - 13 = 0

⇔ (x + 1)² = 13

⇔ x + 1 = √13 or x + 1 = -√13

⇔ x = -1 + √13 or x = -1 - √13

4 0

2 years ago

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th

olchik [2.2K]

Answer:

14.52 seconds.

Step-by-step explanation:

We have been given that the height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation $y=-16x^2+224x+121$ . We are asked to find the time, when the rocket will hit the ground.

We know that the rocket will hit the ground, when height will be 0. So to find the time when rocket will hit the ground, we will substitute $y=0$ in our given equation as: