2(2x-3) + 3(x + 1) = 5x +2

2 answers:

5 0

X=5/2 , remove parentheses , collect like terms, move terms , collect like terms and calculate the sum , then divide both sides by 2 , hope this helped broski

ANEK [815]3 years ago

5 0

2(2x-3) +3(x+1) = 5x+2

4x-6+3x+3 = 5x+2

7x-3 =5x+2

2x-3=2

2x=5

x = 5/2

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I hope this helps you

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Hello,

Step-by-step explanation:

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3 years ago

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2.28% probability that a person selected at random will have an IQ of 110 or greater

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:

$\mu = 100, \sigma = 5$