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3 years ago

36.8 is the sum of r and 13.8 x=

Mathematics

1 answer:

Alecsey [184]3 years ago

3 0

Answer:

r=23

Step-by-step explanation:

sum: quantity obtained by addition

r+13.8=36.8

r=36.8-13.8

r=23

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The polygons are similar but not necessarily drown to scale. What is the value of x?

qaws [65]

Answer: 38

Step-by-step explanation:

Since the polygons are similar, the corresponding sides are all in the same proportions.

x-2/4.5 = 16/2 = 48/6

<u>Solving for x</u>

$\frac{x-2}{4.5}=\frac{48}{6}$

$\frac{x-2}{4.5}=8$

$\frac{4.5\left(x-2\right)}{4.5}=8\cdot \:4.5$

$x-2=36$

$x-2+2=36+2$

$x=38$

Therefore, the value of x is 38

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2 years ago

Paige has 24 magazine's in her magazine collection each month she adds 2 more megazines to her collection how many magazines wil

wariber [46]

Answer:

Step-by-step explanation: Paige has 24 magazines, she adds two more to it in may, two more in June, and two more in July. in total she has 30

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3 years ago

Based on data from a college, scores on a certain test are normally distributed with a mean of 1530 and a standard deviation of

harkovskaia [24]

Answer:

0.73% of the scores are greater than 2317.

14.46% of the scores are less than 1190.

38.23% of the scores are between 1351 and 1673.

Step-by-step explanation:

Problems of normally distributed samples can be 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:

$\mu = 1530, \sigma = 322$