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Ilia_Sergeevich [38]
3 years ago
11

Helpp i really neeed it

Mathematics
1 answer:
Marizza181 [45]3 years ago
7 0

Answer:

9 hours

Step-by-step explanation:

If she makes $ 20 for each car, washing 9 cars in 3 hours would get $ 180.

So she will need to work 9 hours 180 + 180 + 180, washing 9 cars in 3 hours and would get $ 540. This is enough to buy her phone and she will have a surplus of $ 120.

In summary she must work 9 hours

Hope this helps you, please give me the brainliest

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Step-by-step explanation:

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-|12-3/3|5

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-5|3|

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-15 & 15

I think it is the answer

6 0
1 year ago
Write and equivalent expression to the expression below (17x93) (17x97)
mart [117]
(17 * 93) ^ 2 = 1581
6 0
3 years ago
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Colin gets £xx wages each week. After he pays his tax of £tt, he then pays his rent of £250. He shares what's left between himse
Levart [38]

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Answer:

  (x -t -250)/2

Step-by-step explanation:

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5 0
3 years ago
Calculate two iterations of Newton's Method to approximate a zero of the function using the given initial guess. (Round your ans
VikaD [51]

Answer:

The two iterations of f(x) = 1.5598

Step-by-step explanation:

If we apply  Newton's iterations method, we get a new guess of a zero of a function, f(x), xₙ₊₁, using a previous guess of, xₙ.

xₙ₊₁ = xₙ - f(xₙ) / f'(xₙ)

Given;

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cos x / - sin x = -cot x

substitute in "-cot x" into the equation

xₙ₊₁ = xₙ - (- cot x)

xₙ₊₁ = xₙ + cot x

x₁ = 0.7

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x₂ = 0.7 + cot (0.7)

x₂ =  0.7 + 1.18724

x₂ = 1.88724

 

second iteration

x₃ = 1.88724 + cot (1.88724)

x₃ = 1.88724 - 0.32744

x₃ = 1.5598

To four decimal places = 1.5598

4 0
3 years ago
Question 16 of 30
andrew-mc [135]

Answer:

3:15 hours

Step-by-step explanation:

i don't know I just took the test

8 0
3 years ago
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