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3 years ago

How do you do a unit rate?

1 answer:

6 0

To find the unit rate, divide the numerator and denominator of the given rate by the denominator of the given rate. So in this case, divide the numerator and denominator of 70/5 by 5, to get 14/1, or 14 students per class, which is the unit rate.

To find the unit rate, divide the numerator and denominator of the given rate by the denominator of the given rate. So in this case, divide the numerator and denominator of 70/5 by 5, to get 14/1, or 14 students per class, which is the unit rate.

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The larger of 2 numbers is 12 more than the smaller. the sum 84. find the numbers

Anestetic [448]

Let the smaller number be x.

Larger number = 12 + x

Sum = 84

x + 12 + x = 84

2x + 12 = 84

2x = 72

x = 36

Hence, the numbers are 36 and 48.

8 0

3 years ago

Engineers want to design seats in commercial aircraft so that they are wide enough to fit 99% of all males. (Accommodating 100

Nezavi [6.7K]

Answer:

p99 = 16.4 inches

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.

Men have hip breadths that are normally distributed with a mean of 14.3 in. And a standard deviation of 0.9 in.

This means that $\mu = 14.3, \sigma = 0.9$

Find p99.

This is the value of X when Z has a p-value of 0.99, so X when Z = 2.327. Then

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

$2.327 = \frac{X - 14.3}{0.9}$

$X - 14.3 = 0.9*2.327$

$X = 16.4$

p99 = 16.4 inches

8 0

4 years ago

Jodie has 68 red marbles and 272 blue marbles. What percent of Jodie's marbles are red?

slamgirl [31]

Answer: 20%

Step-by-step explanation: 68 + 272 = 340 68/340= 0.2 0.2 * 100= 20%

8 0

3 years ago

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pickupchik [31]

B. the diagonals are congruent - the graph represents two equal, parallel lines, making the two segments congruent

3 0

3 years ago

Describe two quantities that can be measured accurately by integers

myrzilka [38]

Since a quantity is a variable that could be described in terms of numbers, then the quantities that can be measured exactly be integers would be, say, the amount of houses to be supplied with power and the number of people in the household. A fraction could never be a possible amount, because a person and a house is counted as one whole.

8 0

3 years ago