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3 years ago

Help answer key is on the bottom

Mathematics

2 answers:

Tamiku [17]3 years ago

8 0

Answer: 4 weeks

Step-by-step explanation:

since you can’t work half a week (in this case) we have to round up

iren2701 [21]3 years ago

7 0

Answer:

4 weeks

Step-by-step explanation

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Helen told her mom she got 85% on a recent math test. She remembered the test was out of 60. What was her actual mark? *

barxatty [35]

Answer: 85% out of how many questions.

Step-by-step explanation:

8 0

3 years ago

Can someone help me with question 3

djyliett [7]

2. Alana needs to sell 52 boxes of cookies:

She sold 7 boxes to her aunt

She sold 2 boxes to her mother

She sold 15 boxes to her neighbor

you add 7+2+15 = 24 boxes of cookies that she sold

We need to find out how many more boxes of cookies she needs to sell-

We take the 24 boxes she sold and subtract from 52 boxes that she needs to sell.

24 - 52 = 30

The answer is 30, she needs to sell 30 more boxes.

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3. Sam, Jimmy and Andre shared a number of pennies in the ratio 8:5:3

Sam (8), Jimmy (5) and Andre (3)

How many more pennies did Jimmy receive than Andre?

you subtract 3 - 5 = 2

The answer is 2 more pennies.

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4. Jamila spent $33.00 and Akiko spent $ 42.00

Jamila had 4 times as much money left as Akiko. How much money did each of them have in the beginning?

Since Akiko spent the highest amount- you will have to go with the higher amount to find the answer

4 x $42.00 = $168.00

They both in the beginning had $168.00

I hope this helps.

3 0

4 years ago

Simplify 2xy + 3y - 13xy + 4x - 17y

Yakvenalex [24]

Answer:

-11xy-14y+4x

Step-by-step explanation:

4 0

3 years ago

A survey study is to be made to estimate the proportion of residents of a certain suburb who favor the construction of a public

lesya [120]

Answer: 601

Step-by-step explanation:

When the prior estimate of population proportion is not given , the formula we apply to find sample size :

$n=0.25(\dfrac{z^*}{E})^2$

, where z* = critical z-value

E=Margin of error

Given : Margin of error = 0.04

Confidence level = 95%

We know that , according to the z-table , the critical value for 95% confidence interval = z*= 1.960

Then, the required sample size : $n=0.25(\dfrac{1.960}{0.04})^2$

$n=0.25(49)^2$

$n=0.25(2401)=600.25\approx601$

Hence, the required minimum sample size = 601

4 0

3 years ago

A polling organization is asking a sample of U.S. Adults how many pets they own. The frequency distribution below shows the resu

fiasKO [112]

Answer:

The probability that the next person asked has two pets is 0.176

Step-by-step explanation:

The given parameters are;

The frequency distribution of the number of pets owned is presented as follows;

Number of Times ${}$ Frequency ${}$

None ${}$ 354

One ${}$ 981

Two ${}$ 352

Three ${}$ 200

Four ${}$ 113

The probability that the next person asked has two pets = Proportion of the sample that own two pets = 352/(354 + 981 + 352 + 200 + 113) = 0.176

Therefore, the probability that the next person asked has two pets = 0.176

7 0

3 years ago