3 years ago

Rewrite the equation in standard form y=-(x+7)(x+7)-9

Mathematics

1 answer:

olasank [31]3 years ago

3 0

Answer:

x² - 14x - 58

Step-by-step explanation:

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A 12 foot rope is cut into two pieces so that one piece is 3 feet less than twice the length of the other piece. how long is eac

olga2289 [7]

12 feet long

1st piece = x

2nd piece = 2x-3

3x-3 =12

3x=15

x = 5

1st piece = 5 feet

2nd piece = 2*5=10-3=7 feet

4 0

2 years ago

If 3x - 2 = -x + 10, then x =

Anton [14]

Answer:

3x-2 = -x+10

or, 3x+x=10+2

or, 4x=12

or, x=12/4

So, x=3

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2 years ago

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mix 1 part of shampoo to six parts of warmwater.How much water do you need to mix with 200 ml of shampoo?

borishaifa [10]

For every one part, or in this case 200 ml of shampoo, there are three parts water. This means that there is 6 times more water than shampoo. 200 * 6 = 1200 ml of water

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2 years ago

We will now use energy considerations to find the speed of a falling object at impact. Artiom is on the roof replacing some shin

ohaa [14]

Answer:

v = 8.49 m/s rounded off to 3 significant figures

Step-by-step explanation

Using Energy Conservation

U = Tk + Vp (Sum of kinetic Tk Energy and gravitational potential Vp Energy)

At height = 3.67 m, the hammer was still or the velocity was negligible; hence, vi = 0 m/s.
Ui = 0 + mgh
At ground all potential energy is converted to kinetic; hence, Uf = $\frac{1}{2}$ mv².
Since total energy of the system remains constant we equate Ui to Uf.
Ui = Uf
mgh = $\frac{1}{2}$ mv²
After cancelling out masses and making v the subject of the formula we get:

v = $\sqrt[2]{2gh}$ = $\sqrt[2]{2*9.81*3.67}$ = 8.49 m/s rounded off to 3 significant figures

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3 years ago

Pls help being timed

Alex777 [14]

The answer is B your welcome

5 0

2 years ago