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aleksandr82 [10.1K]
2 years ago
5

What is 2/5 y + 1/5 x -0.2y-6+(-2)

Mathematics
1 answer:
Sliva [168]2 years ago
6 0

Answer:

\frac{y}{5} + \frac{x}{5}-8

Step-by-step explanation:

1)  Simplify 2 /5y to 2y/5.

\frac{2y}{5} + \frac{1}{5} x-0.2 y-6-2

2) simplify 1/5x to x/5.

\frac{2y}{5} +\frac{x}{5} -0.2y-6-2

3) Collect like terms.

(\frac{2y}{5} -0.2y) + \frac{x}{5} +(-6-2)

4) Simplify.

\frac{y}{5}+ \frac{x}{5} -8

<em><u>Therefor, the answer is </u></em><em><u>y/5 + x/5 -8</u></em>.

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<h3>What is a statistical hypothesis?</h3>

A hypothesis to test the given parameters requires that we determine if the mean score of the eighth graders is more than 283, thus:

The null hypothesis:

\mathbf{H_o \leq 283}

The alternative hypothesis:

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From the population deviation, the Z test for the true mean can be computed as:

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