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3 years ago

How many diagonals can be drawn in the shape below? 24 40 18 20 ?

Mathematics

2 answers:

Vikentia [17]3 years ago

8 0

No... I think it will be only 4 diagnols

Sidana [21]3 years ago

4 0

Answer: It’s 20

Step-by-step explanation:

Plz mark me brainliest

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If this cube of edge 20 cm long is cut into smaller cubes of edge 10 cm, how many of these smaller cubes do I get?

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You’d get 4 cubes, each with an edge of 10 cm

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3 years ago

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SashulF [63]

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3 years ago

I NEED HELP WITH PERCENT PROBLEM

fomenos

Answer:

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Step-by-step explanation:

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2 years ago

If x to the 2nd power equal 60, What is the value of x

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Answer:

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Step-by-step explanation:

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3 years ago

It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 122 feet. A transportat

madreJ [45]

Complete Question

The complete question is shown on the first uploaded image

Answer:

the null hypothesis is $H_o : \mu = 122$

the alternative hypothesis is $H_a : \mu \ne 122$

The test statistics is $t = - 1.761$

The p-value is $p = P(Z < t ) = 0.039119$

$p \ge 0.01$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 122$

The sample size is n= 38

The sample mean is $\= x = 116 \ feet$

The standard deviation is $\sigma = 21$

Generally the null hypothesis is $H_o : \mu = 122$

the alternative hypothesis is $H_a : \mu \ne 122$

Generally the test statistics is mathematically evaluated as

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

substituting values

$t = \frac { 116 - 122 }{\frac{ 21 }{ \sqrt{ 38} } }$

$t = - 1.761$

The p-value is mathematically represented as

$p = P(Z < t )$

From the z- table

$p = P(Z < t ) = 0.039119$

$p \ge 0.01$

4 0

3 years ago