Describe the relationship between a and b that will make value of the expression 7 x a/b to 7

Mathematics

1 answer:

nikdorinn [45]2 years ago

6 0

A and b should be equal or the same digit. for example 5x2/5+5 or 2/2, because that equals 1. 7x1 is 7, therefore, a and b should be equal/same

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According to the U.S. Department of Education. Institute of Education Sciences, National Center for Education Statistics 1,026,0

Andreyy89

Answer:

The correct option is C) 21.1 and 0.68

Step-by-step explanation:

Consider the provided information.

The mean composite score was 21.1 with a standard deviation of 4.8. The ACT composite score ranges from 1 to 36, with higher scores indicating greater achievement in high school.

Therefore μ = 21.1 and σ = 4.8

It is given that the sample of 50 students;

Thus, sample size ( n ) = 50

According to the central limit theorem,

$\mu_{\bar x}=\mu\ and \ \sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}$