Will give BRAINEST

Mathematics

2 answers:

Svetlanka [38]3 years ago

4 0

X-y=2 (*-2) --> -2x+2y=-4
2x+3y=14
------------------
2x+3y=14
-2x+2y=-4
------------------
5y=10
y=2

Marrrta [24]3 years ago

3 0

A.) is the answer, because, 2*4= 8 2*3=6 8+6= 14

You might be interested in

Find the distance between (−4, −6) and (−1, 2). <br> *Please Check my answer*

Sphinxa [80]

Yes! That is correct!
<span />

8 0

3 years ago

What a deal! Just deShirts is having a 20% off sale. Trixie rushes to the store and buys 14 shirts. When the clerk rings up her

kaheart [24]

Answer:

no because she would get the same total if she added it before or after

Step-by-step explanation:

4 0

2 years ago

8.52 The heights of 2-year-old children are normally distributed with a mean of 32 inches and a standard deviation of 1.5 inches

sweet [91]

Answer:

Heights of 29.5 and below could be a problem.

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.

The heights of 2-year-old children are normally distributed with a mean of 32 inches and a standard deviation of 1.5 inches.

This means that $\mu = 32, \sigma = 1.5$