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3 years ago

Pls help???????? need to have an explanation also

Mathematics

1 answer:

Ratling [72]3 years ago

7 0

Answer:

I would say the answer is 40 cookies

Step-by-step explanation:

The reason I say this is because if you write out the amount of cookies she can make with 6 cups of flour, you would get 30/6. 30 and 6 are both divisible by 6, so if you divided both by 6 you will get 5/1. 1 times 8 is 8, so if you multiply 5 by 8 you will get 40 cookies.

Hope this helped!

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A random sample is made of 256 middle managers concerning their annual incomes. The sample mean is computed to be $35,420. If th

ziro4ka [17]

Answer: a. $128.125

Step-by-step explanation:

The standard error of the mean is given by :

$SE=\dfrac{\sigma}{\sqrt{n}}$ , where $\sigma$ = population standard deviation , n= sample size.

Given: $\sigma=\$2,050$

n= 256

Then, the standard error of the mean:-

$SE=\dfrac{2050}{\sqrt{256}}\\\\=\dfrac{2050}{16}=\$128.125$

Hence, option a. is correct.

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3 years ago

Three times the sum of a number and 18 and is at least -30

miss Akunina [59]

Answer:

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Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Solve m − hp = d for p

Artist 52 [7]

p=−d+m/h

Step by step:

m−hp=d

−hp+m+−m=d+−m

−hp=d−m

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8 0

3 years ago

Abigail and Bailey wash dogs to make extra money. Abigail can wash all of the dogs in 5 hours. Bailey can wash all the dogs in 3

aleksandr82 [10.1K]

Answer: The correct option is (b) $1\dfrac{7}{8}~\textup{hours}.$

Step-by-step explanation: Given that Abigail and Bailey wash dogs to make extra money. Abigail can wash all of the dogs in 5 hours and Bailey can wash all the dogs in 3 hours.

We are to find the time taken by them if they wash the dogs together.

Abigail can wash the dogs in 5 hours.

So, in 1 hour, the fraction of the dogs Abigail can wash is given by

$\dfrac{1}{5}.$

Bailey can wash the dogs in 3 hours.

So, in 1 hour, the fraction of the dogs Bailey can wash is given by

$\dfrac{1}{3}.$

Hence, if they work together, then the fraction of the dogs that they wash in 1 hour is given by

$\dfrac{1}{5}+\dfrac{1}{3}=\dfrac{3+5}{15}=\dfrac{8}{15}.$

Therefore, the time taken by them to wash the dogs if they work together will be

$t=\dfrac{1}{\frac{8}{15}}=\dfrac{15}{8}=1\dfrac{7}{8}~\textup{hours}.$

Thus, option (b) is correct.

7 0

3 years ago

HELP ASAP!!!<br> In triangle OPQ, U is the centroid. If QU = 8, find QR

scZoUnD [109]

Applying the centroid theorem, the length of QR is: 12.

<h3>What is the Centroid Theorem?</h3>

According to the centroid theorem, the centroid (the point where the three medians intersect) is 2/3 of the distance from the midpoint of the a side to each vertex opposite vertex of the triangle.

Given:

QU = 8

QU = 2/3(QR)

Substitute

8 = 2/3(QR)

3(8) = 2(QR)

24 = 2(QR)

QR = 12

Therefore, applying the centroid theorem, the length of QR is: 12.

Learn more about the centroid theorem on:

brainly.com/question/20627009

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2 years ago