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3 years ago

I need help with this and explain how to do it please!! 6x - 4z

Mathematics

1 answer:

Troyanec [42]3 years ago

4 0

Answer:

you should know you dont need help so do it by yourself. if you want the awnser you should know or you just dont pay attention in class.1234567890 is your awnser

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Sara says, "If you subtract 14 from my number and multiply the difference by -5 , the result is -125 ." What is 's number?

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Answer:"if you subtract 14 from my number and multiply the difference by -4, the result is -80." What is Sara's number?. 2. See answers.

2 answers

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Answer:6Step-by-step explanation:-80/-4=20+14=6

Step-by-step explanation:

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2 years ago

Use some or all numbers 16,17, and 23 and/or 24 to make sum 100. You may use a number more than once.

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3 years ago

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PolarNik [594]

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3 years ago

The restaurant bill you and your friend received

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3 years ago

Read 2 more answers

1) A school has 1600 students and they are going to vote as to whether they will completely convert the school completely off fo

fredd [130]

Answer:

Standard deviation of the students = 0.408

The students would you have to poll to be 95% confident of the outcome within /- 2% of the vote

= 0.408 X 1600

= 652.8

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Given sample size 'n' = 1600

95% confidence interval of the margin error is determined by

$M.E = \frac{Z_{0.05} S.D}{\sqrt{n} }$

Level of significance = 0.05

Z₀.₀₅ = 1.96

Given Margin of error = 2% = 0.02

$M.E = \frac{Z_{0.05} S.D}{\sqrt{n} }$

$0.02 = \frac{1.96 X S.D}{\sqrt{1600} }$

0.02 X √1600 = 1.96 X S.D

$S.D = \frac{0.02X\sqrt{1600} }{1.96} = 0.408$

Standard deviation of the students = 0.408

The students would you have to poll to be 95% confident of the outcome within /- 2% of the vote

= 0.408 X 1600

= 652.8

5 0

3 years ago