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EastWind [94]
3 years ago
11

In another survey, Jane found that 25% of the total number of teenagers surveyed like sandwiches. If 50 teenagers like sandwiche

s, what is the total number of teenagers that Jane surveyed?
Mathematics
1 answer:
34kurt3 years ago
7 0
Set up a proportion: 25/100 = 50/n where n = # of teens surveyed
Simplify fraction: 1/4 = 50/n
Cross multiply: n = 200
So 200 teens were surveyed.
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You want to order some T-shirts that cost $14 each. Shipping is $7 per order. If you buy 11 T-shirts, what will the order cost?
poizon [28]
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8 0
3 years ago
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a data set has a mean of 68 and standard deviation of 6. An element in this set is 51. What is z-score for 51? Round your answer
gogolik [260]

z = -2.83

<u>Explanation:</u>

Given:

Mean, μ = 68

Standard deviation, σ = 6

Data point, x = 51

Z score, z = ?

We know:

z = \frac{data point - mean}{standard deviation} \\\\z = \frac{x - u}{p}

Substituting the value we get:

z = \frac{51-68}{6} \\\\z = -2.83

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3 years ago
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liubo4ka [24]

Answer:

Step-by-step explanation:

4 0
3 years ago
The Math Club is raising money so they can attend a local competition next month. They have already raised $125 and they are sel
prisoha [69]

Answer: 100 candy bars

Step-by-step explanation:

You did not include the question but judging by the progression I can assume that the question is along the lines of how many candy bars they will need to sell to reach their target.

You did not include the amount they have to raise as well so let us assume that number is $375.

Assuming they have to raise $375 and they have already raised $125, the amount left to be raised is:

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With each candy bar selling at $2.50, the number of candy bars they will need to sell is:

= 250/ 2.50

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<em>You should use this process to find the answer to your question. </em>

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yanalaym [24]

Answer:

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3 years ago
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