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3 years ago

PLEASE HELP ILL MAKE YOU BRAINLIEST!!!!What is the length of line segment MQ?

Mathematics

2 answers:

Salsk061 [2.6K]3 years ago

7 0

The length is 11 units. x3

Marat540 [252]3 years ago

6 0

Answer:C

Step-by-step explanation:

11 units

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Will mark brainliest!

kvasek [131]

Answer:

Step-by-step explanation:

To find f(- 2) substitute x = - 2 into f(x)

f(- 2) = - 2(- 2)³ + (- 2)² + 4(- 2) - 3

= - 2(- 8) + 4 - 8 - 3

= 16 + 4 - 8 - 3

= 9 → B

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3 years ago

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20194+9283 - 372 = ? <br><br>will give brainliest or whatever ‍

klemol [59]

20,194+9,283 - 372 = 29,105

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3 years ago

13. Calcule:

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Your answer will be B.

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3 years ago

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AfilCa [17]

Answer: 11.65685....

Step-by-step explanation:

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3 years ago

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

Allisa [31]

Answer:

The condition are

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

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

The check revealed 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

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 5 \ year$

The sample size is n = 20

The sample mean is $\= x = 4.6 \ years$

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

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

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

So i will be making use of $\alpha = 0.05$ level of significance to test this claim

The critical value of $\alpha$ from the normal distribution table is $Z_\alpha = 1.645$

Generally the test statistics is mathematically evaluated as

$t = \frac{\= x - \mu}{ \frac{\sigma }{\sqrt{n} } }$

substituting values

$t = \frac{ 4.6 - 5}{ \frac{2.2}{\sqrt{20} } }$

$t = -0.8131$

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