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emmasim [6.3K]
3 years ago
6

When multiplying a particular number by 60 on his calculator John got an answer of 900. What was the number

Mathematics
2 answers:
mezya [45]3 years ago
4 0
15 x 60 = 900 ! :{D :-)
Vinil7 [7]3 years ago
3 0
15 multiply 9 =900............
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find the margin of error to use for this sample mean sushi based on a sample of 35 people he average out of pieces of sushi a pe
NNADVOKAT [17]

Answer:

{13.7756,18.2244}

Step-by-step explanation:

Given the sample size, the margin of error can be calculated with the formula M=Z*\frac{\sigma}{\sqrt{n}} where Z is the critical value for the desired confidence level, σ is the population standard deviation, and n is the sample size. Therefore, our margin of error for a 90% confidence level is:

M=Z*\frac{\sigma}{\sqrt{n}}=1.645*(\frac{8}{\sqrt{35}})=2.2244

The formula for a confidence interval is CI=\bar{x}+M where x-bar is the sample mean. Therefore, the 90% confidence interval for the mean amount of sushi pieces a person can eat is:

CI=\bar{x}\pm[M]=16\pm2.2244={13.7756,18.2244}

Therefore, we are 90% confident that the true mean amount of sushi pieces a person can eat is contained within the interval {13.7756,18.2244}

7 0
3 years ago
What is 2/5 divided by -1/2 minus 3/2
shutvik [7]

Answer:

-  \frac{23}{10}

Step-by-step explanation:

\frac{2}{5}  \div  \frac{ - 1}{2}  -  \frac{3}{2}

➡️ -  \frac{2}{5}  \times 2 -  \frac{3}{2}

➡️ -  \frac{4}{5}  -  \frac{3}{2}

➡️ -  \frac{23}{10}

5 0
3 years ago
Read 2 more answers
What is the greatest common factor of 15 and 45? Explain your answer.
timofeeve [1]
Factors of 15: 1, 3, 5, 15

<span>Factors of 45: 1, 3, 5, 9, </span>15, 45

<span>The Greatest common factor is 15.</span>
6 0
3 years ago
What is 3157 with the 1 being underlined rounded to the nearest 10 or hundred
RUDIKE [14]

Answer:100

Step-by-step explanation:

8 0
3 years ago
Rewrite! Write an new and equivalent equation that is easier to solve
Marysya12 [62]

\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}

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<u>Since </u><u>the </u><u>equation</u><u> </u><u>provided </u><u>isn't</u><u> </u><u>i</u><u>n</u><u> </u><u>it's</u><u> </u><u>general</u><u> </u><u>form </u><u>,</u><u> </u><u>let's</u><u> </u><u>first </u><u>convert </u><u>it </u><u>~</u>

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\bold{ax  + b = 0}

<u>T</u><u>he </u><u>equation</u><u> </u><u>after </u><u>getting</u><u> </u><u>converted</u><u> </u><u>will </u><u>be </u><u>as </u><u>follows</u><u> </u><u>~</u>

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hope helpful ~

6 0
2 years ago
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