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4 years ago

Number 2....What is the number of balls of wool I need

Mathematics

2 answers:

Zolol [24]4 years ago

8 0

They fail need 3 balls of wool

Reil [10]4 years ago

3 0

4 make 8
divide by 8
4/8 make 1 cap
times 6 both sides
24/8=6 caps
3=6 caps
yo need 3 balls of wool

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Hey can you please help me posted picture of question

Zinaida [17]

The inverse functions have a property that the composition of two inverse functions always results is x.

From the given options, only the pair given in option B result in the composition equal to x.

$F(x)= \frac{12}{x}-18 \\ \\ 
G(x)= \frac{12}{x+18} \\ \\ 
F(G(x))= \frac{12}{ \frac{12}{x+18} }-18 \\ \\ 
F(G(x))= \frac{12(x+18)}{12}-18 \\ \\ 
F(G(x))=x+18-18=x$

This proves, F(x) and G(x) are inverse of each other.

So the answer to this question is Option B

7 0

3 years ago

Need rn. worth 30.

Likurg_2 [28]

Considering the situation described, the confidence interval is given by:

(0.35, 0.51).

<h3>What is a confidence interval?</h3>

It is given by the <u>estimate plus/minus the margin of error</u>.

For this problem, we have that:

The estimate is of 0.43.

The margin of error is half the range of the observations, hence M = (0.48 - 0.32)/2 = 0.08.

Then, the bounds of the interval are given by:

0.43 - 0.08 = 0.35.

0.43 + 0.08 = 0.51.

More can be learned about confidence intervals at brainly.com/question/25890103

#SPJ1

4 0

2 years ago

Based on the information from Harper's Index, 37 out of 100 adult Americans who did not attend college believe in extraterrestri

vazorg [7]

Answer: Yes, this indicate the proportion of adult americans that attended college and believe in extraterrestrials is higher than the proportion that did not attend college.

Step-by-step explanation:

Since we have given that

Hypothesis:

$H_0:p_1=p_2\\\\H_a:p_1>p_2$

n₁ = 100

x₁ = 37

So, $p_1=\dfrac{x_1}{n_1}=\dfrac{37}{100}=0.37$

n₂ = 100

x₂ =47

So, $p_2=\dfrac{47}{100}=0.47$

At 0.01 level of significance, z = 2.33

So, test statistic value would be

$z=\dfrac{p_1-p_2}{\sqrt{\dfrac{p_1(1-p_1)}{n_1}+\dfrac{p_2(1-p_2)}{n_2}}}\\\\z=\dfrac{0.37-0.47}{\sqrt{\dfrac{0.37\times 0.63}{100}+\dfrac{0.47\times 0.53}{100}}}\\\\z=-1.44$

Since, 2.33>-1.44

Hence, we will reject the null hypothesis.

Therefore, Yes, this indicate the proportion of adult americans that attended college and believe in extraterrestrials is higher than the proportion that did not attend college

4 0

3 years ago

Dimitri is helping to plan the school talent show. Each performer for the talent show has 7 minutes for his or her performance,

Kaylis [27]

15 performances can be accommodated

<em><u>Solution:</u></em>

Given that,

Each performer for the talent show has 7 minutes for his or her performance

The introduction for the talent show is 25 minutes long

The entire show including the introduction, will last 130 minutes

Thus the remaining time for performances is:

Performance time = 130 minutes - 25 minutes

Performance time = 105 minutes

To find, the number of performances, divide the 105 by 7 minutes

$Number\ of\ performances = \frac{105}{7} = 15$

Thus 15 performances can be accommodated

5 0

4 years ago

50 apples cost $25. How much would 75 apples<br>cost?

fredd [130]

Answer:

Divide 75 by 2 and you get 37.5 as your answer. That's how much it will cost you to get 75 apples

Step-by-step explanation:

if we do unitary method

then..

50/25=0.5

1 apple cost 0.5

75=75*0.5 =ruppee 37.5

6 0

4 years ago

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