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Mathematics

1 answer:

joja [24]3 years ago

8 0

Answer:

The answer would be B.

Because if you multiply all the numbers of ABC then go through the list of the A'B'C' options only B matches up

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Colin slices a cake into 8 equal-sized slices. He and his friends eat 5 slices of the cake.

Effectus [21]

Answer:

5/8

Step-by-step explanation:

there are 8 slices.

if he and his friends eat 5 pieces, they ate 5 out of 8 pieces.

in maths, we write 5 out of 8 like 5/8

hope this helped, any questions - just ask

good luck,

-cheesetoasty

7 0

3 years ago

carrie has 340 marbles to put in Vases she wants the vases to hold eathier 100 marbles or 10 marbles which way she can arrange t

ss7ja [257]

340 /10=34 or 340/100=3.4

7 0

3 years ago

Test scores are normally distributed with a mean of 500. Convert the given score to a z-score, using the given standard deviatio

Bond [772]

Answer:

The percentage of students who scored below 620 is 93.32%.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

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, we have that:

$\mu = 500, \sigma = 80$