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4 years ago

−2(−1 1/4) in simplest form

Mathematics

2 answers:

jolli1 [7]4 years ago

6 0

Answer:

11/4 is your answer.

Step-by-step explanation:

What you do is you have to times -2 and -11/4 together.

This gives you 22/8.

This can be reduced by 2 to get:

11/4 as your answer.

slamgirl [31]4 years ago

3 0

Answer:

5 1/2

Step-by-step explanation:

For fraction multiplication, multiply the numerators and then multiply the denominators to get

-2/1 x -11/4 = 22/4

This fraction can be reduced by dividing both the numerator and denominator by the Greatest Common Factor of 22 and 4 using

GCF(22,4) = 2

22÷ 2/4 ÷2= 11/2

The fraction

11/2

is the same as

11÷2

Convert to a mixed number using

long division for 11 ÷ 2 = 5R1, so

11/2=5 1/2

Therefore: 5 1/2

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4 years ago

Georgianna claims that in a small city renowned for its music school, the average child takes at least 5 years of piano lessons.

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Answer:

The condition are

The Null hypothesis is $H_o : \mu = 5$

The Alternative hypothesis is $H_a : \mu < 5$

The check revealed that

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Step-by-step explanation:

From the question we are told that

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The standard deviation is $\sigma = 2.2 \ years$

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The Alternative hypothesis is $H_a : \mu < 5$

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Generally the test statistics is mathematically evaluated as

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Looking at the value of t and $Z_{\alpha }$ we see that $t < Z_{\alpha }$ so we fail to reject the null hypothesis

This implies that there is sufficient evidence to support the claim that in a small city renowned for its music school, the average child takes at least 5 years of piano lessons.

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3 years ago

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago