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4 years ago

(Once again I am doing this question because no one answered it last time. thanks)

1 answer:

5 0

This question, because it is worded strangely, is asking for her salary before taxes. We can figure this out because we are given an expression, "(9/10)s", which represents what we want to find.

The equation would be either:
(9/10)s = 486
or
0.9s = 486

To solve, you would divide 486 by 0.9, which gives you $540.

I hope this helps!

You might be interested in

Based on historical data in Oxnard college, we believe that 37% of freshmen do not visit their counselors regularly. For this ye

slega [8]

Answer:

A sample size of 1031 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

37% of freshmen do not visit their counselors regularly.

This means that $\pi = 0.37$

98% confidence level

So $\alpha = 0.02$ , z is the value of Z that has a pvalue of $1 - \frac{0.02}{2} = 0.99$ , so $Z = 2.327$ .

You would like to be 98% confident that your estimate is within 3.5% of the true population proportion. How large of a sample size is required?

A sample size of n is required.

n is found when M = 0.035. So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.035 = 2.327\sqrt{\frac{0.37*0.63}{n}}$

$0.035\sqrt{n} = 2.327\sqrt{0.37*0.63}$

$\sqrt{n} = \frac{2.327\sqrt{0.37*0.63}}{0.035}$

$(\sqrt{n})^2 = (\frac{2.327\sqrt{0.37*0.63}}{0.035})^2$

$n = 1030.4$

Rounding up:

A sample size of 1031 is required.

4 0

3 years ago

If a number is a whole number then it is also a natural number

Step2247 [10]

This statement is not true.

If a number is whole number, it will not always be a natural number. An example of a whole number that is not a natural number is 0. Think of natural numbers as counting number so 1, 2, 3, 4, ... and so on. Whole numbers are natural numbers but they also include 0. When we count up, we usually don’t starts with 0 so it’s not a natural number but it is a whole number.

Therefore, if a number is a whole number, it does not necessarily have to be a natural number.

5 0

3 years ago

Factor the expression using the GCF 1. 27K-6 2. 5x+60y

Gnom [1K]

Answer:

1. 3(9K-2)

2. 5(x+12y)

Step-by-step explanation:

8 0

3 years ago

Answer 17 and 18 for 15 points

Mkey [24]

17. 62 degrees

18. 38 degrees

5 0

3 years ago

3. What is the yintercept ? Show your work. of f(x) *(x)=()

Gre4nikov [31]

The y-intercept is (0,1)
⬇️
F(x)=(1/3)^x
f(0)=(1/3)^0
F(0)=1

3 0

3 years ago