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2 years ago

Someone answer these maths questions for me!! I need help ASAP!!!!!! 100 points!!!

Mathematics

2 answers:

Diano4ka-milaya [45]2 years ago

5 0

Answer:

Sorry

Step-by-step explanation:

faltersainse [42]2 years ago

4 0

Answer:

Why do we have to get homework???sorry for not answering ur equations I don't know em as yet

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On a coordinate plane, a line goes through points (1, negative 1) and (2, 4). This graph displays a linear function. What is the

Nikolay [14]

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2 years ago

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There are 35 female performers in a dance recital. The ratio of men to women in the recital is 2 : 7 How many men are in the rec

Vsevolod [243]

There are 32 female performers in a dance recital the ratio of men to women is 3/8 How many men are in the dance recital

But we have 32 female performers in the dance recital. Hence there are 3×4=12 men in the dance recital.

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3 years ago

A random sample of 100 people was taken. Eighty of the people in the sample favored Candidate A. We are interested in determinin

riadik2000 [5.3K]

Answer:

Option b - not significantly greater than 75%.

Step-by-step explanation:

A random sample of 100 people was taken i.e. n=100

Eighty of the people in the sample favored Candidate i.e. x=80

We have used single sample proportion test,

$p=\frac{x}{n}$

$p=\frac{80}{100}$

$p=0.8$

Now we define hypothesis,

Null hypothesis $H_0$ : candidate A is significantly greater than 75%.

Alternative hypothesis $H_1$ : candidate A is not significantly greater than 75%.

Level of significance $\alpha=0.05$

Applying test statistic Z -proportion,

$Z=\frac{\widehat{p}-p_0}{\sqrt{\frac{p_0(1-p_0)}{n}}}$

Where, $\widehat{p}=80\%=0.80$ and $p=75%=0.75$

Substitute the values,

$Z=\frac{0.80-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}$

$Z=\frac{0.80-0.75}{\sqrt{\frac{0.1875}{100}}}$

$Z=\frac{0.05}{0.0433}$

$Z=1.1547$

The p-value is

$P(Z>1.1547)=1-P(Z$

$P(Z>1.1547)=1-0.8789$

$P(Z>1.1547)=0.1241$

Now, the p-value is greater than the 0.05.

So we fail to reject the null hypothesis and conclude that the A is not significantly greater than 75%.

Therefore, Option b is correct.

7 0

3 years ago

I need the answer !!!

bonufazy [111]

I'm guessing you are looking for the answer on the first question, because I cannot read the rest of the second one lol.
So start with the volume of cone formula: V=3.14(5)^2 (6/3)
157.08
157
H is the answer

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3 years ago

The sum of the measures of angle A and angle B equal 90 degrees. What is cos B

stira [4]

Answer:I think it is 12/25

Step-by-step explanation:

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3 years ago