Solve for x please 10 points

Mathematics

2 answers:

Deffense [45]2 years ago

4 0

Answer:

(2x +10)° + (x + 5)° = 180° ( sum of consecutive interior angles is supplementary)

=> 2x + 10 + x + 5 = 180

=> 3x + 15 = 180

=> 3x = 180 – 15

=> 3x = 165

=> x = 165/3

=> x = 55°

STatiana [176]2 years ago

3 0

Answer:

x=_5

Step-by-step explanation:

(2x+10)=(x+5)

(x+10)=5

×=-5

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A set of city temperatures in April are normally distributed with a mean of 19.7 degrees Celsius and a standard deviation of 2 d

Sati [7]

Answer:

19.77% of average city temperatures are higher than that of Cairo

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 question, we have that:

$\mu = 19.7, \sigma = 2$