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2 years ago

What four times fourteen

Mathematics

2 answers:

erica [24]2 years ago

5 0

Answer:

Step-by-step explanation:

You will need to line up the problem to solve it!!!

x 4

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You multiply 4x4=16 then carry the 1 and 4x1=4 4+1=5 so ur answer is 56

ycow [4]2 years ago

4 0

Answer:

Step-by-step explanation: 14+14 is 28 do this twice because you said 14x4

and that gets you another 28, add the two 28's together and you have 56

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Jim earns $1,600 per month after taxes. He is working on his budget and has the first three categories finished. Housing $576 Fo

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3 years ago

Suppose an automotive repair company wants to determine the current percentage of customers who keep up with regular vehicle mai

Nina [5.8K]

Answer: 1692

Step-by-step explanation:

Formula to find the sample size :

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

Given : Confidence level : $(1-\alpha)=0.90$

⇒ significance level = $\alpha= 0.10$

z-value for 90% confidence interval (using z-table)= $z_{\alpha/2}=1.645$

Prior estimate of the population proportion (p) of customers who keep up with regular vehicle maintenance is unknown.

Let we take p= 0.5

Margin of error : E= 2%=0.02

Now, the required sample size will be :

$n=0.5(1-0.5)(\dfrac{1.645}{0.02})^2$

Simplify , we get

$n=(0.25)(6765.0625)=1691.265625\approx1692$

Hence, the required sample size = 1692

8 0

3 years ago

Read 2 more answers

Find two consecutive positive integers such that the sum of their squares is 421 .

maria [59]

We assume the two numbers are x and (x+1)
so x^2+(x+1)^2=421
x^2+(x^2+2x+1)=421
2x^2+2x-420=0
According to the formula of quadratic
x=14 or-15
cuz we know the two numbers are integers
so x=14
therefore the other number is 15
To make sure that's correct
14^2+15^2=421

Hope that helps you!!

4 0

3 years ago

Write an algebraic expression for the phrase the product of 4 and s.

notka56 [123]

Answer: 4s

Step-by-step explanation:

Product means multiply

4 times s = 4s

8 0

2 years ago

Read 2 more answers

20 is 40% of what number