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Alina [70]
2 years ago
11

5*23 use the distubutive property and mental math to find the product

Mathematics
1 answer:
dezoksy [38]2 years ago
8 0

Answer:

115

Step-by-step explanation:

because desmos calculator

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A company makes rubber rafts. 12% of them develop cracks within the first month of operation. 27 new rafts are randomly sampled
rewona [7]

The probability that the number of tested rafts that develop cracks is no more than 3 is <u>.00006</u>.

The true proportion, p for the population is given to 0.12.

Thus, the mean, μ, for the sample = np = 27*0.12 = 3.24.

The sample size, n, given to us is 27.

Thus, the standard deviation, s, for the sample can be calculated using the formula, s = √{p(1 - p)}/n.

s = √{0.12(1 - 0.12)}/27 = √0.003911 = 0.0625389.

We are asked to calculate the probability that the number of tested rafts that develop cracks is no more than 3, that is, we need to calculate P(X ≤3).

P(X ≤ 3)

= P(Z ≤ {(3 - 3.24)/0.0625389) {Using the formula z = (x - μ)/s}

= P(Z ≤ -3.8376114706)

= .00006 {From table}.

Thus, the probability that the number of tested rafts that develop cracks is no more than 3 is <u>.00006</u>.

Learn more about sampling distributions at

brainly.com/question/15507495

#SPJ4

8 0
1 year ago
Please help 3 time askingggg help meeee
Drupady [299]

Answer:

5. -2 3/4, -2.2, 2.8, 3 1/8

6. -0.6 , 0.65 , 2/3 , 4/5

Step-by-step explanation:

6 0
2 years ago
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Please helpppp !!!!!
MrRissso [65]
The answer is
2(pi)/3
Because 4(pi)-/5 minus 2(pi)-/5 is 2(pi)-/5
After that you cancel -/5 from the numerator and denominator to get 2(pi)/3
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2 years ago
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What does it mean to SOLVE a system of linear equations?
Ganezh [65]

Answer:

In solving a system of linear equations, we try to find values for each of the unknowns that will satisfy every equation in the system

Step-by-step explanation:

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3 years ago
Action figures are $8 a piece at a toy store. The toy store sold 26 action figures today. How much money did the toy store recei
bulgar [2K]

<u>The toy store received $208</u><u> from selling action figures</u>.

Knowing that each action figure is $8 in the toy store, we can multiply that by the quantity of action figures sold to get the total amount of money received.

26 times $8 is $208.

8 0
2 years ago
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