I am having trouble solving this equation, can u help me? -2/5x = 3

Mathematics

1 answer:

Tems11 [23]2 years ago

3 0

Answer:

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Step-by-step explanation:

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The name of the triangle that has a 90 angle

brilliants [131]

Answer:

Right angled triangle or Right Triangle

Step-by-step explanation:

triangle that has a 90 angle is known as RIGHT ANGLED TRIANGLE or RIGHT TRIANGLE

8 0

3 years ago

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,

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