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3 years ago

9

Three fourths of the 8th graders at Kingston middle school went on a class trip if 252 students went on the trip, how many 8th g

raders are there

1 answer:

Minchanka [31]3 years ago

3 0

Divide the three fourths of the eight graders by 252 and then simplify

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Tell how you know when you have found the prime factorization of a number

sweet-ann [11.9K]

When you end up with prime numbers for example
If you factored out 12 you could say 3x4. Now 3 is a prime number so it cant be broken down any more. You can break down 4 into 2x2. 2 is a prime number so cant be broken down any further. When 12 is factored out it is 2x2x3

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3 years ago

Read 2 more answers

An operations analyst counted the number of arrivals per minute at an ATM in each of 30 randomly chosen minutes. The results wer

liraira [26]

Step-by-step explanation:

since Poisson distribution parameter is not given so we have to estimate it from the sample data. The average number of of arrivals per minute at an ATM is

$\hat{\lambda}=\bar{x}=\frac{\sum x}{n}=\frac{30}{30}=1$

So probabaility for $\mathrm{X}=1$ is

$P(X=1)=\frac{e^{-\lambda} \lambda^{x}}{x !}=\frac{e^{-1} \cdot 1^{1}}{1 !}=0.3679$

So expected frequency for $X=1$ is $0.3679^{*} 30=11.037$ (or $\left.11.04\right)$ .

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3 years ago

In how many ways can 4 boys and 4 girls be arranged in a row such that no two boys and no two girls are next to each other?(A) 1

nirvana33 [79]

Answer:

1152

Step-by-step explanation:

4 boys and 4 girls be arranged in a row such that no two boys and no two girls are next to each other.

Two boys and two girls are not next to each other. so one boy and one girl are next to each other in two ways.

BGBGBGBG, GBGBGBGB

4 boys are arranged in 4! ways and 4 girls are arranged in 4! ways

So number of ways = $2 \cdot 4! \cdot 4!=2 \cdot 24 \cdot 24=1152$

4 0

3 years ago

Apply the Pythagorean theorem to triangle LNM to find NM, and round to the nearest hundredth

jolli1 [7]

Asked and answered elsewhere.
brainly.com/question/9895958

4 0

3 years ago

Hello,can you answer this question asap thxs

Ivan

9514 1404 393

Answer:

111 1/9 pounds

Step-by-step explanation:

The given relationship is ...

delivered = ground × (1 -10%)

Then ...

ground = delivered/0.90 = 100 lb/0.90 = 111 1/9 lb

It is necessary to grind 111 1/9 pounds of grain to have exactly 100 lb after a 10% payment.

5 0

3 years ago