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3 years ago

What’s the answer???? I’ll mark brainliest

Mathematics

1 answer:

wlad13 [49]3 years ago

5 0

Answer:

Step-by-step explanation:

3 bears = 3

1 bear = 3 ÷ 3

1 bear = 1

2 glasses + 1 bear = 5

2 glasses + 1 = 5

2 glasses = 5 - 1

= 4

1 glasses = 4 ÷ 2

1 glasses = 2

1 Cyxus + 1 bear + 1 Cyxus + 1 glasses = 9

2 Cyxus + 1 + 2 = 9

2 Cyxus = 9 - 1 - 2

= 6

1 Cyxus = 6 ÷ 2

1 Cyxus = 3

1 glasses + 1 bear + 1 glasses + 1 Cyxus - 1 bear - 1 glasses = ?

2 + 1 + 2 + 3 - 1 - 2 = 5

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I hope this helps you

4,8 (x+4)=2,16

48 (x+4)=21,6

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3 years ago

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If LMN is equal or congruent to XYZ, which congruences are true by CPCTC? check all that apply.

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D. Z ~ N
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3 years ago

The scores of 4th and 5th graders on a test about polygons and their characteristics are summarized below

nlexa [21]

Answer: Part A: In which grade did the students do the best? Answer; 4th grade, they have a higher median of 68

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Step-by-step explanation: That’s for the answers for the 3rd question on Topic 4 of Section 9. Hope that helped:))

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3 years ago

For options A– E choose all of the expressions that are equivalent to 3(4x + 3).

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3 years ago

The College Boards, which are administered each year to many thousands of high school students, are scored so as to yield a mean

Marysya12 [62]

Answer:

a) 15.87% of the scores are expected to be greater than 600.

b) 2.28% of the scores are expected to be greater than 700.

c) 30.85% of the scores are expected to be less than 450.

d) 53.28% of the scores are expected to be between 450 and 600.

Step-by-step explanation:

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.

In this problem, we have that:

$\mu = 500, \sigma = 100$

a. Greater than 600

This is 1 subtracted by the pvalue of Z when X = 600. So

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

$Z = \frac{600 - 500}{100}$

$Z = 1$

$Z = 1$ has a pvalue of 0.8413.

1 - 0.8413 = 0.1587

15.87% of the scores are expected to be greater than 600.

b. Greater than 700

This is 1 subtracted by the pvalue of Z when X = 700. So

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

$Z = \frac{700 - 500}{100}$

$Z = 2$

$Z = 2$ has a pvalue of 0.9772

1 - 0.9772 = 0.0228

2.28% of the scores are expected to be greater than 700.

c. Less than 450

Pvalue of Z when X = 450. So

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

$Z = \frac{450 - 500}{100}$

$Z = -0.5$

$Z = -0.5$ has a pvalue of 0.3085.

30.85% of the scores are expected to be less than 450.

d. Between 450 and 600

pvalue of Z when X = 600 subtracted by the pvalue of Z when X = 450. So

X = 600

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

$Z = \frac{600 - 500}{100}$

$Z = 1$

$Z = 1$ has a pvalue of 0.8413.

X = 450

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

$Z = \frac{450 - 500}{100}$

$Z = -0.5$

$Z = -0.5$ has a pvalue of 0.3085.

0.8413 - 0.3085 = 0.5328

53.28% of the scores are expected to be between 450 and 600.

6 0

3 years ago