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3 years ago

Helpp il mark u as Brainlist

Mathematics

2 answers:

vagabundo [1.1K]3 years ago

7 0

Answer:

Step-by-step explanation:

denpristay [2]3 years ago

4 0

B
That’s the answer

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Can someone help me please

OleMash [197]

Answer:

<h3> $\boxed{ \bold{ \huge{ \boxed{ \sf{ {12.56 \: {mm}^{2} }}}}}}$ </h3>

Step-by-step explanation:

Given,

Radius ( r ) = 2 mm

pi ( π ) = 3.14

Finding the area of circle having radius of 2 mm

Area of circle $\sf{ = \pi \: {r}^{2} }$

plug the values

⇒ $\sf{3.14 \times {2}^{2} }$

Evaluate the power

⇒ $\sf{3.14 \times 4}$

Multiply the numbers

⇒ $\sf{12.56 \: {mm}^{2} }$

Hope I helped!

Best regards!!

4 0

3 years ago

Danielle fill a container with soil by using a bowl. The bowl holds 3/4 cup of soil. Danielle use 13 full bowl of soil to fill t

bixtya [17]

The container holds 9 3/4 cups of soil

6 0

3 years ago

Is an angle made of any 2 rays and why?

Kipish [7]

An angle is any two rays that share an endpoint. the reason that last part is important is becasue they could be one ray that starts in seatlle and one ray starting over in new york. these would not for an angle. if i confused you let me know and ill try to clarify.

4 0

3 years ago

Larry spent 75% of his weekly allowance a ticket for a concert. The ticket cost $15. How much is Larry's weekly allowance?

fredd [130]

Answer:

Step-by-step explanation:

75% of 20 = 15

I believe this is correct and hope it helps :)

3 0

3 years ago

A manufacturer of running shoes knows that the average lifetime for a particular model of shoes is 15 months. Someone in the res

AveGali [126]

Answer:

The decision rule is

Fail to reject the null hypothesis

The conclusion is

There is no sufficient evidence to show that the designer's claim of a better shoe is supported by the trial results.

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 15 \ months$

The sample size is n = 25

The sample mean is $\= x = 17 \ months$

The standard deviation is $s = 5.5 \ months$

Let assume the level of significance of this test is $\alpha = 0.05$

The null hypothesis is $H_o : \mu = 15$

The alternative hypothesis is $H_a : \mu > 17$

Generally the degree of freedom is mathematically represented as

$df = n -1$

=> $df = 25 -1$

=> $df = 24$

Generally the test statistics is mathematically represented as

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

=> $t = \frac{ 17 - 15 }{\frac{5.5}{\sqrt{25} } }$

=> $t = 1.8182$

Generally from the student t distribution table the probability of obtaining $t = 1.8182$ to the right of the curve at a degree of freedom of $df = 24$ is

$p-value = P(t > 0.18182 ) = 0.4286$

From the value obtained we see that $p-value > \alpha$ hence

The decision rule is

Fail to reject the null hypothesis

The conclusion is

There is no sufficient evidence to show that the designer's claim of a better shoe is supported by the trial results.

7 0

3 years ago

Helpp il mark u as Brainlist​

Helpp il mark u as Brainlist