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anyanavicka [17]

3 years ago

13

At a party, James notices that 15 pitchers of lemonade are filled to the same level, but not to the top. He combines all the lem

onade to fill six whole pitchers. What fraction of each of the 15 pitchers was full?

1 answer:

Maksim231197 [3]3 years ago

4 0

Answer:

1/6th of them

Step-by-step explanation:

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What is the unit rate for the clownfish if all 60 costs 3,600? I will mark brainliest

Cerrena [4.2K]

The unit rate would be found if you made a ratio first of 60:3600. You notice that 60 can go into 3600 by 60 times. This means you get a unit ratio of 1:60. This means that one clownfish cost 60 dollars.

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3 years ago

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What is the area of this figure?

scoundrel [369]

The answer would be <u>189 cm²</u>. Multiply the legs of the triangle (12 x 9), and keep that answer. Usually, to measure the area of a triangle, you would multiply the legs and divide by 2, but since there are two congruent triangles in the same shape here, you don't have to. Next step would be to add the area of the square in the middle (9 x 9). Add 12x9 to 9x9 (108 + 81) to get 189.

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3 years ago

The measurement of how fast an object moves over a certain amount of time. Question 1 options: Velocity Speed Acceleration Displ

Olin [163]

Velocity I'm pretty sure

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4 years ago

How many times greater is 2.125*10^4 than 1.25*10^3

suter [353]

2.125*10^4 x 10^4 / 1.25 x 10^3

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Answer

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8 0

3 years ago

In a random sample 765 adults in the United States, 322 say they could not cover a $400 unexpected expense without borrowing mon

Volgvan

Answer:

a) The population under consideration in the data set is "adults in the United States".

b) The parameter being estimated is the proportion of adults in the U.S. that could not cover a $400 unexpected expense without borrowing money or going into debt.

c) The point estimate for the parameter of the population is p-hat.

d) The standard deviation of the sampling distribution

e)

$\hat p=322/765=0.421\\\\s=\sqrt{\frac{\hat p(1-\hat p)}{n} } =\sqrt{\frac{0.421\cdot 0.579}{765} } =\sqrt{0.00032} =0.018$

f) Yes, 50% is a value not probable if the estimations are right.

g) No, it does not change.

Step-by-step explanation:

f) We can calculate the plausability of the value 50% with our estimations.

The P-value of a proportion of 50% is very low, so the value should surprise.

$z=(x-\hat p)/s=(0.5-0.421)/0.018=0.079/0.018=4.38\\\\P(z>4.38)=0$

g) We re-calculate with p=0.4

$z=(x-\hat p)/s=(0.5-0.4)/0.018=0.100/0.018=5.55\\\\P(z>5.55)=0$

6 0

3 years ago