Ask question

Ask question

All categories

3 years ago

7

54 out of the 60 magazines at the bookstore are women's magazines. What percentage of the magazines at the bookstore are women's

magazines?

1 answer:

Nataly_w [17]3 years ago

6 0

Answer:

90

Step-by-step explanation:

for percentage

$\frac{54}{60}$ ×100

= 0.9×100

=90

You might be interested in

What are the properties of an isosceles triangle?

jolli1 [7]

An isosceles triangle has two equal sides and one unique side
Hope this helps!
- Z

4 0

2 years ago

Read 2 more answers

Determine whether the value is a discrete random variable, continuous random variable, or not a random variable.

Viktor [21]

Discrete random variable as we count the number of free dash throw attempts and we dont measure them (continuous)

7 0

3 years ago

The weight of laboratory grasshoppers follows a Normal distribution, with a mean of 90 grams and a standard deviation of 2 grams

JulsSmile [24]

Answer:

95.44% of the grasshoppers weigh between 86 grams and 94 grams.

Step-by-step explanation:

Normal Probability Distribution:

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

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean of 90 grams and a standard deviation of 2 grams.

This means that $\mu = 90, \sigma = 2$

What percentage of the grasshoppers weigh between 86 grams and 94 grams?

The proportion is the p-value of Z when X = 94 subtracted by the p-value of Z when X = 86. So

X = 94

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

$Z = \frac{94 - 90}{2}$

$Z = 2$

$Z = 2$ has a p-value of 0.9772.

X = 86

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

$Z = \frac{86 - 90}{2}$

$Z = -2$

$Z = -2$ has a p-value of 0.0228.

0.9772 - 0.0228 = 0.9544

0.9544*100% = 95.44%

95.44% of the grasshoppers weigh between 86 grams and 94 grams.

5 0

2 years ago

Felix found the sum of two prime numbers and one composite number to be 45. The difference between the greatest and least number

erica [24]

I think it could be 13,17, and 15.
If I am wrong then I am sorry

3 0

2 years ago

STatiana [176]

Answer:

Algebraically, f is even if and only if f(-x) = f(x) for all x in the domain of f. A function f is odd if the graph of f is symmetric with respect to the origin. Algebraically, f is odd if and only if f(-x) = -f(x) for all x in the domain of f brainliest ?

7 0

2 years ago