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2 years ago

Malachy, Gavin and Gavyn share £18 in a ratio 3:1:2. How much money does each person get?

Mathematics

1 answer:

Drupady [299]2 years ago

7 0

Answer:

Step-by-step explanation:

18×(3/6) = 918×(1/6) = 318×(2/6) = 6

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Mr. Johnson is going to buy an 18 3 4 pound turkey for Thanksgiving. The turkey costs $ 2.80 per pound at the grocery store. If

bezimeni [28]

Answer:

10.22 she save

Step-by-step explanation:

18 3/4 x 2.80=51.1

51.1 x 20%=10.22

4 0

2 years ago

M and N are two events P(M) = 0.60, P(N) = 0.20, and P (M and N) = 0.1.

saul85 [17]

Answer:

Step-by-step explanation:

i just took the test :)

8 0

2 years ago

Scores on Ms. Bond's test have a mean of 70 and a standard deviation of 11. David has a score of 52 on Ms. Bond's test. Scores o

otez555 [7]

Answer:

Due to the higher z-score, David has the higher standardized score

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.

Which student has the higher standardized score

Whoever had the higher z-score.

David:

Scores on Ms. Bond's test have a mean of 70 and a standard deviation of 11. David has a score of 52 on Ms. Bond's test. So $X = 52, \mu = 70, \sigma = 11$

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

$Z = \frac{52 - 70}{11}$

$Z = -1.64$

Steven:

Scores on Ms. Nash's test have a mean of 64 and a standard deviation of 6. Steven has a score of 52 on Ms. So $X = 52, \mu = 64, \sigma = 6$

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

$Z = \frac{52 - 64}{6}$

$Z = -2$

Due to the higher z-score, David has the higher standardized score

3 0

2 years ago

Aaron wants to buy 2 concert tickets that cost $25.50 each. Aaron's grandfather pays him $4.25 an hour to rake leaves. How many

alexandr402 [8]

You are going to times 25.50 together and that's 51 so then you are going to divide 51.00 by 4.25 and that's 12

So the answer is 12

8 0

2 years ago

Read 2 more answers

You want to make five-letter codes that use the letters A, F, E, R, and M without repeating any letter. What is the probability

Feliz [49]

Answer:

The probability that a randomly chosen code starts with M and ends with E is 0.05 ....

Step-by-step explanation:

According to the given statement we have to make five letter code from A, F, E, R, and M without repeating any letter. We have to find that what is probability that a randomly chosen code starts with M and ends with E.

Thus the probability of picking the first letter M = 1/5

After that we require the sequence (not E, not E, not E) which is equal to:

= 3/4 * 2/3* *1/2

= 1/4

Now multiply 1/5 and 1/4

1/5 * 1/4

= 1/20

= 0.05

Therefore the probability that a randomly chosen code starts with M and ends with E is 0.05 ....

4 0

2 years ago