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3 years ago

How do you write 5.5 as a fraction

Mathematics

1 answer:

abruzzese [7]3 years ago

3 0

5.5 = 5 + 0.5 = 5 + 1/2 = 5 1/2 (mixed number)
= 11/2

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Zanna’s cousin was born in 1980. If Zanna was born in 1997, how much older, in years, is her cousin?

dalvyx [7]

Answer:

17 years.

Step-by-step explanation:

Zanna was born is 1997

Zanna's cousin was born in 1980

1997 - 1980 = 17

7 0

3 years ago

Read 2 more answers

Name the edges of an hexagonal pyramid

aleksandrvk [35]

Given:

Hexagonal pyramid

To find:

The edges of an hexagonal pyramid.

Solution:

Edges means lines which connecting to vertices.

Edges in the base of the pyramid:

AB, BC, CD, DE, EF, FA

Edges in the triangular shape of the pyramid:

AG, BG, CG, DG, EG, FG

Therefore edges of an hexagonal pyramid are:

AB, BC, CD, DE, EF, FA, AG, BG, CG, DG, EG, FG

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3 years ago

Is the following function an even function, odd function, or neither?

expeople1 [14]

Answer:

I think neither but i suggest you not take my word for it.

Step-by-step explanation:

3 0

3 years ago

wesley. is very particular about his salad He must have 10 leaves of lettuce for every 4 pieces of carrots If he has 50 leaves o

tatyana61 [14]

Answer:

20 carrots

Step-by-step explanation:

4/10

x/50

10 x 5 = 50

4 x 5 = x

x = 20

20/50

7 0

3 years ago

Scores on the SAT are approximately normally distributed. One year, the average score on the Math SAT was 500 and the standard d

Nookie1986 [14]

Answer:

The score of a person who did better than 85% of all the test-takers was of 624.44.

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.

One year, the average score on the Math SAT was 500 and the standard deviation was 120.

This means that $\mu = 500, \sigma = 120$

What was the score of a person who did better than 85% of all the test-takers?

The 85th percentile, which is X when Z has a p-value of 0.85, so X when Z = 1.037.

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

$1.037 = \frac{X - 500}{120}$

$X - 500 = 1.037*120$

$X = 624.44$

The score of a person who did better than 85% of all the test-takers was of 624.44.

8 0

2 years ago