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alexandr1967 [171]
3 years ago
5

How many units? What is e value of a?

Mathematics
1 answer:
kkurt [141]3 years ago
6 0

Answer:

a = 14

Step-by-step explanation:

3a = a + 28 ➡ 2a = 28 ➡ a = 14

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Someone help me with this math problem pleasee
Mekhanik [1.2K]

Answer:

0.012

Step-by-step explanation:

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3 years ago
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How much do you need to subtract from 41/6 to get 6
Svetllana [295]
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I hope this answered your question
3 0
3 years ago
The Wall Street Journal reported that automobile crashes cost the United States $162 billion annually (2008 data). The average c
ivanzaharov [21]

Answer:

n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94

So the answer for this case would be n=94 rounded up to the nearest integer

Step-by-step explanation:

Information given

\bar X represent the sample mean

\mu population mean (variable of interest)

\sigma= 500 represent the population standard deviation

n represent the sample size  

Solution to the problem

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{s}{\sqrt{n}}    (a)

And on this case we have that ME =120 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The confidence2 level is 98% or 0.98 then the significance level would be \alpha=1-0.98=0.02 and \alpha/2=0.01, the critical value for this case would be z_{\alpha/2}=2.326, replacing into formula (b) we got:

n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94

So the answer for this case would be n=94 rounded up to the nearest integer

8 0
3 years ago
(2x - 4)+ ( x + 9)<br> A. 3x+5<br> B.x+5<br> C.3x-13<br> D.x+9
tangare [24]

Answer: option A, 3x + 5

first, i rewrote it and removed the parentheses.

2x - 4 + x + 9

then, i collected the like terms.

3x + 5

4 0
3 years ago
Please help me!! no links&lt;3
vlabodo [156]
A is correct.
A sum is addition
Square is represented by small 2


Answer: A
5 0
3 years ago
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