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Kaylis [27]
3 years ago
11

The answer for this question

Mathematics
1 answer:
Savatey [412]3 years ago
8 0
I hope this helps you

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Can someone help me with number 8 plz
statuscvo [17]
We have the following equation:
 h (t) = - 16t ^ 2 + 161t + 128
 We substitute the value of h (t) = 170:
 170 = -16t ^ 2 + 161t + 128
 We rewrite the equation:
 -16t ^ 2 + 161t + 128 - 170 = 0
 -16t ^ 2 + 161t - 42 = 0
 We look for the roots of the equation:
 t1 = (161/32) + root (23233) / 32
 t2 = (161/32) - root (23233) / 32
 Answer:
 
The object is 170 feet off the ground at the following times:
 
t1 = (161/32) + root (23233) / 32
 
t2 = (161/32) - root (23233) / 32
7 0
3 years ago
A radio telescope array is in an unpopulated desert region. The array covers a rectangular area that is one fourth square kilome
kramer

Answer:

  3 km

Step-by-step explanation:

The area of a rectangle is given by the formula ...

  A = LW

Filling in the given information, we can solve for the length.

  1/4 = L·(1/12)

Multiplying by 12, we see that ...

  3 = L

The array is 3 kilometers long.

3 0
3 years ago
Write a second inequality with the same meaning -12<= a
alexira [117]

Answer:

a\geq-12 or -48\leq4a

Step-by-step explanation:

7 0
3 years ago
Multiplying or dividing two related quantities by the same number is called; what?
tamaranim1 [39]
I believe this is called scaling. This is the word that I am associating with your definition, as well as what many internet sources say. I am not 100% sure, but I think this is correct. Hope this helps.
6 0
3 years ago
2(4x − 3) − 8 = 4 + 2x<br> steps
asambeis [7]

Answer:

X=3

Step-by-step explanation:

2(4x-3)-t=4+2x

multiply parentheses by 2

8x-6-8=4+2x

Calculate

8x-14=4+2x

Move terms

8x-2x=4+14

Calculate the sum after collecting like terms

6x=18

Divide both sides by 6

x=3

6 0
3 years ago
Read 2 more answers
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