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hoa [83]
3 years ago
8

Delila earns $108.75 for working 15 hours as a holiday helper wrapping gifts. at this rate ,how much money will she earn if she

works 18 hours the next week? explain
Mathematics
2 answers:
zavuch27 [327]3 years ago
7 0

First you want to see how much she makes per hour so you will divide

$108.75 / 15 = $7.25

Delila she makes $7.25 every hour.

So if next week she works 3 more hours than she did the previous you will just multiply $7.25 three times which is $21.75.

Then just add $108.75 + $21.75 = $130.50.

If Delila works 18 hours she will earn $130.50.

Hope this Helps!!

blsea [12.9K]3 years ago
4 0
In 1 hour she earns $7.25
18 hours she earns $130.5
18 times 17.25 it’s $130.5
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E = MV^2 ÷ 2 + mgh, Make V Subject of the formula​
Stels [109]

Answer:

\red{ \bold{ V = \sqrt{\frac{2(E - mgh)}{M}}}}

Step-by-step explanation:

E = MV^2 ÷ 2 + mgh \\  \\ E - mgh = MV^2 ÷ 2  \\  \\  2(E - mgh)= MV^2   \\  \\  \frac{2(E - mgh)}{M}=V^2  \\  \\  \sqrt{\frac{2(E - mgh)}{M}}  = V \\  \\ \red{ \bold{ V = \sqrt{\frac{2(E - mgh)}{M}}}}

4 0
3 years ago
It took 2/3 of an hour to complete her science homework. It took Bethany 3/4 of the amount of time to do her math homework as he
SOVA2 [1]
We know there are 60 minutes in an hour.  To find 2/3 of an hour we divide 60/3 to find 1/3 and multiply by 2 so:
60/3 = 20
20*2 = 40 minutes (which is 2/3 of an hour) to do science

We do the same thing with the 40 minutes.  To find 1/4 of 40 minutes we divide 40 by 4 and then multiply it by 3 to get 3/4 so:

40/4 = 10
10*3 = 30 minutes

Then subtract the times 40-30 = 10 minutes

It took her 10 more minutes to complete her science homework.

Hope that helps


3 0
3 years ago
A rectangle has an area of 616 m² and a width of 22m. What is its length?
daser333 [38]

Answer:

l=28m

w Width

22

m

A Area

616

m²

Using the formula

A=wl

Solving forl

l=A

w=616

22=28m

hope this will help you

make me brainliest

8 0
3 years ago
Read 2 more answers
The area of a square is 81 centimeters find the length of the length find the diagonal
EleoNora [17]

Length = √area  = √81 = 9

diagonal = √2 * side = √2*9 = 9√2

5 0
3 years ago
Suppose the number of messages that an inbox receives may be modeled by a Poisson distribution. If the average number of message
docker41 [41]

Answer:

0.36427

Step-by-step explanation:

Mean = λ = 18 messages per hour

P(X = x) = (e^-λ)(λ⁻ˣ)/x!

P(X ≤ x) = Σ (e^-λ)(λ⁻ˣ)/x! (Summation From 0 to x)

But the probability required is that the messages thay come in an hour is between 15 and 20, that is, P(15 < X < 20)

P(15 < X < 20) = P(X < 20) - P(X ≤ 15)

These probabilities will be evaluated using a cumulative frequency calculator.

P(X < 20) = 0.65092

P(X ≤ 15) = poissoncdf(18, 15) = 0.28665

P(15 < X < 20) = P(X < 20) - P(X ≤ 15) = 0.65092 - 0.28665 = 0.36427.

You can use the Poisson distribution calculator here

https://stattrek.com/online-calculator/poisson.aspx

4 0
3 years ago
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