How to add fraction?

2 answers:

6 0

Answer: Step 1: Make sure the bottom numbers (the denominators) are the same. Step 2: Add the top numbers (the numerators), put that answer over the denominator. Step 3: Simplify the fraction (if needed)

Step-by-step explanation:

yulyashka [42]3 years ago

5 0

Answer:

Cross-multiply the two fractions and add the results together to get the numerator of the answer.

Suppose you want to add the fractions 1/3 and 2/5. To get the numerator of the answer, cross-multiply. In other words, multiply the numerator of each fraction by the denominator of the other:

1/3 and 2/5

5+1=6 3+2=5

Add the results to get the numerator (top) of the answer:

5 + 6 = 11

Multiply the two denominators together to get the denominator of the answer.

To get the denominator (bottom), just multiply the denominators of the two fractions:

1/3 and 2/5

3x5 = 15

The denominator of the answer is 15.

So the final answer is 11/15

HOPE THIS HELPS!

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What is the surface area of a triangular prism?

Llana [10]

Answer:

The general formula for the total surface area of a right prism is T. S. A. =ph+2B where p represents the perimeter of the base, h the height of the prism and B the area of the base.

Step-by-step explanation:

5 0

3 years ago

Can someone please answer! There is a picture. Thank you!!!!

almond37 [142]

In the left/right direction, your circle (at it's biggest point) goes from -5 to 5
the middle of -5 and 5 is 0
so the center of your circle should have a x = 0
in the (x , y) point

the only option that has
(0, something)
is C
Therefore your answer is C

5 0

4 years ago

In a recent contest, the mean score was 210 and the standard deviation was 25. a) Find the z-score of John who scored 190 b) Fin

denpristay [2]

Answer:

a) $Z = -0.8$

b) $Z = 2.4$

c) Mary's score was 241.25.

Step-by-step explanation:

Problems of normally distributed samples can be 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 problem, we have that:

$\mu = 210, \sigma = 25$