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Firdavs [7]
4 years ago
10

Can someone help with this story problem?

Mathematics
2 answers:
denis23 [38]4 years ago
8 0
Since she has 100 dollars already she only needs 200. since she makes 3 dollars an hour it will take about 67 hours
kotykmax [81]4 years ago
6 0
It will take he 64 this is because it is redundant the the amount spent
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A recipe take 90 minutes to make.25% of the time is spent preparing the ingredients.How many minutes are spent preparing
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4 0
3 years ago
We would like to construct a 99% confidence interval for the mean, based on a sample of 50 observations. The sample standard dev
Sloan [31]

Answer:

Lower confidence limit = 20.191

Step-by-step explanation:

Sample mean; x' = 22

Sample standard deviation; s = 5.5

Sample size; n = 50

Confidence interval = 99%

Since sample size > 30, we will use the formula;

CI = x' ± zs/√n

Where;

x' is sample mean

s is sample standard deviation

n is sample size

z is z-value of the confidence interval

From the table attached, z for 99% = 2.3263

Thus;

CI = 22 ± (2.3263 × 5.5)/√50

CI = 22 ± 1.809

CI = 23.809 or 20.191

Lower confidence limit = 20.191

3 0
3 years ago
When you are dividing a whole number by a whole number or a decimal by a decimal, how is the process of dividing alike and how i
vaieri [72.5K]
When dividing a decimal by a decimal, you have to move the decimal before you divide but when you divide with whole numbers, you just divide.
8 0
3 years ago
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Write the sentence as an equation.<br> The sum of 24 and x is - 20.
Firdavs [7]

Answer:

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this is the equation form

5 0
3 years ago
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The cost of a catering prom is 250 plus $15 for each person attending. what is the cost of 150 people?
Anastasy [175]

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Step-by-step explanation:

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Hopefully this helps- let me know if you have any questions!

4 0
3 years ago
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