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Otrada [13]
2 years ago
12

Which best represents the commutative property of addition?

Mathematics
1 answer:
Alexxandr [17]2 years ago
6 0

Answer:

i think D

Step-by-step explanation:

please mark me brainliest please

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Janice Tax, an accountant for Flee Corp., earned $102,700 from January to June. In July she earned $8,000. Assuming a FICA tax r
faust18 [17]

The Federal Insurance Contributions Act (FICA) is made up of two items, Social Security and Medicare taxes. For 2016, the Social Security tax rate is 6.2% on the first $118,500 wages paid. The Medicare tax rate is 1.45% on the first $200,000 and 2.35% above $200,000. Since the total earnings is only $110,700 which is not yet taxable. So there is no taxable earnings yet.

6 0
3 years ago
Xˆ8 ÷ xˆ2 fully factorised
Ksivusya [100]

Answer:

Step-by-step explanation:

x^8/x^2= x^{8-2}= x^6

when you divide same base and different powers, you subtract the powers

3 0
3 years ago
Read 2 more answers
An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to make an est
nirvana33 [79]

Answer:

The 80% confidence interval for the mean number of words a third grader can read per minute is between 40.4 wpm and 40.8 wpm.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.8}{2} = 0.1

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.1 = 0.99, so z = 1.28

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.28*\frac{4.1}{\sqrt{840}} = 0.2

The lower end of the interval is the sample mean subtracted by M. So it is 40.6 - 0.2 = 40.4 words per minute.

The upper end of the interval is the sample mean added to M. So it is 40.6 + 0.2 = 40.8 words per minute.

The 80% confidence interval for the mean number of words a third grader can read per minute is between 40.4 wpm and 40.8 wpm.

3 0
3 years ago
Find the remainder when f(x) is divided by (x - k).<br><br> f(x) = 4x3 - 6x2 + 3x + 1; k= -2
laila [671]
\frac{f(x)}{(x-k)}
\frac{4x^3-6x^2+3x+1}{(x+2)}
Using Long Division, pic below
Your remainder is -61

8 0
2 years ago
Read 2 more answers
divide 6x^4+2x^3-6x^2-14x-1 by 3x+1 by using long divison show all work then explain if 3x+1 is a factor of the dividend
dlinn [17]

After working this problem out, we know that 3x + 1 is not a total factor of the dividend, because there is a remainder.

When you divide a polynomial by another polynomial, if there is a remainder, it is not a complete factor.

<h3><u>After dividing, we are left with: 2x^3 - 2x - 4 + (3/(3x + 1))</u></h3>

There is a remainder of 3.

6 0
3 years ago
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