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2 years ago

MARKING AS BRAINLIEST! LAST ATTEMPT! ( divisibility rules practice problems)

Mathematics

1 answer:

Luba_88 [7]2 years ago

8 0

Answer:

15.) 3 5

27.) 3 9

56.) 2 4

16.) 2 4

28.) 2 4

57.) 3

102.) 2 3 6

268.) 2 4

4518.) 2 3 6 9

93.) 3

144.) 2 3 4 6 9

256.) 2 4

75.) 3 5

450.) 2 3 5 6 9 10

70.) 2 5 10

Step-by-step explanation:

15.) 3 x 5

27.) 3 x 9

56.) 2 x 28 || 4 x 14

16.) 2 x 8 || 4 x 4

28.) 2 x 14 || 4 x 7

57.) 3 x 19

102.) 2 x 51 || 3 x 34 || 6 x 17

268.) 2 x 134 || 4 x 67

4518.) 2 x 2259 || 3 x 1506 || 6 x 753 || 9 x 502

93.) 3 x 31

144.) 2 x 72 || 3 x 48 || 4 x 36 || 6 x 24 || 9 x 16

256.) 2 x 128 || 4 x 64

75.) 3 x 25 || 5 x 15

450.) 2 x 225 || 3 x 150 || 5 x 90 || 6 x 75 || 9 x 50 || 10 x 45

70.) 2 x 35 || 5 x 14 || 7 x 10

You might be interested in

Please help!

Oksana_A [137]

Answer:

The probability of first landing on a 4: P = 1/4

The probability of second landing on a 4: P = 1/4

Applying the multiplication rule:

=> The probability of landing on a 4 and then landing on a 4:

P = (1/4) x (1/4) = 1/16

Hope this helps!

3 0

3 years ago

The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 7.9 ounces and stand

fgiga [73]

Answer:

91.60% probability that the average weight of a bar in a simple random sample of three of these chocolate bars is between 7.76 and 8.09 ounces

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

$\mu = 7.9, \sigma = 0.16, n = 3, s = \frac{0.16}{\sqrt{3}} = 0.0924$

What is the probability that the average weight of a bar in a simple random sample of three of these chocolate bars is between 7.76 and 8.09 ounces?

This is the pvalue of Z when X = 8.09 subtracted by the pvalue of Z when X = 7.76. So

X = 8.09

$Z = \frac{X - \mu}{\sigma}$

By the Central Limit Theorem

$Z = \frac{X - \mu}{s}$

$Z = \frac{8.09 - 7.9}{0.0924}$

$Z = 2.06$

$Z = 2.06$ has a pvalue of 0.9803

X = 7.76

$Z = \frac{X - \mu}{s}$

$Z = \frac{7.76 - 7.9}{0.0924}$

$Z = -1.52$

$Z = -1.52$ has a pvalue of 0.0643

0.9803 - 0.0643 = 0.9160

91.60% probability that the average weight of a bar in a simple random sample of three of these chocolate bars is between 7.76 and 8.09 ounces

6 0

4 years ago

The equation of a line is x + 3y = 14.

mariarad [96]

To find the y-intercept you first need to set everything equal to y and that will put everything in the y=mx+b line equation. Where m is the slope and b is the y intercept

x+3y = 14 subtract x over

3y = -x+14 divide by 3

y = -1/3x +14

So 14 is the y-intercept of the equation

7 0

4 years ago

Read 2 more answers

1<br> Which equation represents the situation, 12 is 42% of what number?

umka2103 [35]

Answer:

28.57

Step-by-step explanation

12/42=.2857 x 100=28.57 hope i helped! please mark brainliest!

8 0

3 years ago

What is the slope of the line represented by the equation y = 1/5x-3?

Romashka-Z-Leto [24]

Answer:

1/5

Step-by-step explanation:

Your equation is written in the form y=mx+b, where m is the slope and b is the y-intercept.

m=1/5, so the slope is 1/5

7 0

4 years ago