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3 years ago

Giving brainliest!!!!!!!!!!

Mathematics

2 answers:

Brrunno [24]3 years ago

5 0

Answer:

I think the answer is D.

Step-by-step explanation:

Well, if you look at the last few sentences in that picture, it says that "he earns money depending how long he babysits." It's a clue to the answer, so the answer is obviously D.

I am also sorry if my answer is wrong. It might be c but please comment on my answer if you disagree/think it's wrong.

MAVERICK [17]3 years ago

4 0

Answer:

Step-by-step explanation:

since the amount of money he earns depends on the number of hours he babysits, it makes the money dependent and the hours independent.

You might be interested in

Evaluate the following expression for m= 8 and p= -12 M^2-|p| 76 52 -52 -76

masha68 [24]

Answer:

Step-by-step explanation:

Put the numbers in the expression and do the arithmetic.

(-8)² - |-12| = 64 -12 = 52

3 0

3 years ago

5b-7b=? <img src="https://tex.z-dn.net/?f=5x%20-%207x" id="TexFormula1" title="5x - 7x" alt="5x - 7x" align="absmiddle" class

Alex Ar [27]

Answer:

Step-by-step explanation:

Whether you use b or x for the variable does not matter.

5 - 7 is a money problem

If you have 5 dollars and spend 7 where are you? You should think you have a debt of 2. So the answer from your point is - 2

5b - 7b = - 2b

5x - 7x = - 2x

5 0

3 years ago

Pls help thanks sooo much

Leviafan [203]

Answer:

Step-by-step explanation:

a. we do first the multiplication 3*4=12

-9-12=-21

b. you do parenthesis first

(-2)^3=-8

(-8)*(-4)= +32

now we have (32)-3=29

c. as you see in the red square we do multiplication first, than division

3*2=6

(-18)/6=-3

2+(-3)=-1

3 0

3 years ago

The countries of Europe report that 48% of the labor force is female. The United Nations wonders if the percentage of females in

Ostrovityanka [42]

Answer:

a) $0.436 - 1.64\sqrt{\frac{0.436(1-0.436)}{525}}=0.400$

$0.436 + 1.64\sqrt{\frac{0.436(1-0.436)}{525}}=0.472$

The 90% confidence interval would be given by (0.400;0.472)

b) We are confident at 90% that the true proportion of female in the Labor Force is between 0.400 and 0.472

c) Null hypothesis: $p\geq 0.48$

Alternative hypothesis: $p < 0.48$

For this case since the upper limit of the confidence interval is lower than 0.48 (0.472<0.48) we can conclude that the true proportion of female is actually lower than 0.48 or 48% at 10% of signficance.

Step-by-step explanation:

Part a

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by $\alpha=1-0.90=0.1$ and $\alpha/2 =0.05$ . And the critical value would be given by: