1) If there are 54 people in a class and the ratio of girls to total people is 2:5, how many

1 answer:

3 0

From the ratio you can deduce 2:5 girls and 3:5 boys. Divide 54 by 5 and you get 10.8. 10.8*2 = 21.6 and 10.8*2= 32.4 which adds to the total 54. There cannot be a fraction of a person, you need to round the decimals. There are 22 girls and 32 boys.

You might be interested in

Ms.Hatcher bought a pencil decoration shown below for her bulletin board. If a= 11 in and b= 25in what is the area of this penci

andriy [413]

Answer:

The area of the pencil is 36 inches.

Step-by-step explanation:

3 0

3 years ago

i have a division problem (7200 divided by 68) and i can't solve it, so i used a calculator and calculator said the answer is 10

Hitman42 [59]

When you do the second step it is 40 so you add one zero from the 7200 and thats where you got the zero

5 0

3 years ago

Heres some 8th grade math :))))

weqwewe [10]

Answer:A dilation is a transformation that produces an image that is the same shape as the original, but is a different size

Step-by-step explanation:

Basically its the same shape but different size

6 0

3 years ago

Read 2 more answers

If the distribution of weight of newborn babies in Maryland is normally distributed with a mean of 3.89 kilograms and a standard

I am Lyosha [343]

Answer:

a) 3 kilograms

b) 5.7 kilograms

Step-by-step explanation:

Z-score:

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.

In this question:

$\mu = 3.89, \sigma = 0.68$