All categories

2 years ago

Having trouble on this question. Can anyone help?

Mathematics

2 answers:

Sindrei [870]2 years ago

8 0

Answer:

-12, 2

Step-by-step explanation:

X may be on the left of W, then X = -5 - 7 = -12

X may be on the right of W, then X = -5 + 7 = 2

Liula [17]2 years ago

7 0

Answer:

<em>Locations of X:</em> 2, -12

Step-by-step explanation:

We know that W lies at -5. To figure out where the other X's are located, you need to do -5 ± 7, since the range is 7.

So let's first try -5 + 7:

-5 + 7 = 2

The first location of X can be at 2.

Now let's try -5 - 7:

-5 - 7 = -12

The second location of X is -12.

So, the answer is that X is located at 2 and -12

You might be interested in

Jeremy received $65 for his birthday and used part of it to buy 3 video games. The games cost the same amount, and he had $14 le

SIZIF [17.4K]

A. Is your answer, if the games cost the same amount and he bought 3, that would give you 3x, the total is 65, and 14 is what was left. You would subtract 14 from the total, then divide by 3 to get x by itself.

8 0

3 years ago

Read 2 more answers

What is the side length of a square rug with the same area as a rectangular rug that is 4 feet by 9 feet

Soloha48 [4]

So the area of the rectangular rug is 4*9, which gives you 36 so

(Rectangle) A = 36 which is also 4*9
(Square) A = 36
What number multiplied by itself give you 36? Why do you need to find a number multiplied by itself? Because when you multiply a number by itself, you get a perfect square and that is what you are trying to find.

6*6 = 36

SO the side length of a square rug with the same area as a rectangular rug that is 4 feet by 9 feet is 6

ANSWER: 6

5 0

4 years ago

In a large company, the proportion of employees who were promoted during the last year was 0.10. If 100

Natasha2012 [34]

Answer:

0.0475

Step-by-step explanation:

We use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

Normal probability distribution

Problems of normally distributed distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that $\mu = E(X)$ , $\sigma = \sqrt{V(X)}$ .