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3 years ago

152 ? 6394÷42 i don't understand how

Mathematics

1 answer:

Natasha2012 [34]3 years ago

8 0

Answer:

Using long devision

Step-by-step explanation:

I believe the answer is B

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2 hundreds equal how many tens? <br><br> Lets see if ya'll know the answer cause i do

tekilochka [14]

Answer:

200 is equal to 20 tens I guess lol

8 0

3 years ago

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A college student organization wants to start a nightclub for students under the age of 21. To assess support for this proposal,

eduard

Answer:

a) Sample size = 822

b) Margin of error = 0.03407

Step-by-step explanation:

We are given the following in the question:

p = 74% = 0.74

a) Sample size is required to obtain margin of error of 0.03

Formula:

$\text{Margin of error} = z_{\text{statistic}}\times \sqrt{\dfrac{p(1-p)}{n}}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.03 = 1.96\times \sqrt{\dfrac{0.74(1-0.74)}{n}}\\\\n = (\dfrac{1.96}{0.03})^2(0.74)(1-0.74)\\\\n = 821.24 \approx 822$

Thus, the sample size must be approximately 822 to obtain a 95% confidence interval with an approximate margin of error of 0.03

b) Margin of error for the 95% confidence interval

p = 54% = 0.54

Formula:

$\text{Margin of error} = z_{\text{statistic}}\times \sqrt{\dfrac{p(1-p)}{n}}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$\text{Margin of error} = 1.96\times \sqrt{\dfrac{0.54(1-0.54)}{822}}\\\\=0.03407$

The margin of error now will be 0.03407.

5 0

4 years ago

Lance has 3 time as many pencils as Nick, and they have 84 pencils together. How many pencils does each of them have?

Rufina [12.5K]

Answer:

21 pencils for Nick and 63 pencils for Lance

Step-by-step explanation:

Lance is said to have 3 times the pencils Nick has.
Let's keep the number of pencils Nick has as x.
If Nick has x pencils that means Lance has 3x pencils.
The total number of pencils present is 84.

Now let's make an equation out of the information above:

3x + x = 84

Now solve for x.

3x + x = 84

4x = 84

x = 84/4

x = 21

So Nick has 21 pencils

Now for Lance:

3 * (21) = 63

So Lance has 63 pencils

63 + 21 = 84 pencils

8 0

3 years ago

FREE BRAINLIST NEED HELP ASAP

Ede4ka [16]

Answer:

A)4.6 yard

Step-by-step explanation:

$x^{2} +10^{2} =11^{2} \\x^{2} =21\\x=\sqrt[2]{21} \\$

x≅4.6

Hoped I helped, have a nice day!

7 0

3 years ago

A paint can has a diameter of 17 centimeters and a height of 24 centimeters. What is the surface area of the can? 2.775 76 cm 2

RideAnS [48]

Answer:

1734.85

Step-by-step explanation:

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3 years ago

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