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Luba_88 [7]
3 years ago
7

Evaluate each expression for the given value of the variable 1 + r2-r; r=5

Mathematics
1 answer:
Sholpan [36]3 years ago
4 0
To solve this expression, we need to plug r into the equation.

1 + (5)2 - (5)
= 1 + 10 - 5
= 11 - 5
= 6

Hope this helps!
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In​ 1990, the average math SAT score for students at one school was 498. Five years​ later, a teacher wants to perform a hypothe
mojhsa [17]

Answer:

A. Fail to reject the claim that the average math SAT score is 498 when in fact it is not 498.

Step-by-step explanation:

Type II Error:

A type II error happens when there is a non-rejection of a false null hypothesis.

In this question:

The null hypothesis is H0​:μ=498.

Since there is a type II error, there was a failure to reject the claim that the average math SAT score is 498 when in fact it is not 498, and thus, the correct answer is given by option A.

6 0
3 years ago
Purchasing a TV that is 20% off will save $180.
Flauer [41]

Answer:

$900

Step-by-step explanation:

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Let the original price of TV set $ x

According to question,

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b)  By second method,

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4 0
3 years ago
F(x) = 9(9 + x)(10) <br>f(5) = ? ​
natima [27]
<h2>♪Answer : </h2>

»f(x) = 9(9 + x)(10)

subtitute x = 2 for f(x).

»f(5) = 9(9 + 5)(10)

»f(5) = 9(14)(10)

»f(5) = 1,260✅

4 0
3 years ago
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Step-by-step explanation:

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