3 years ago

Y = 4x + 2 on a graph

Mathematics

1 answer:

miss Akunina [59]3 years ago

4 0

Answer
X= -0.5
Y=2
If you need me to explain I can.

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Subtract. <br><br> –34 – (–55)

Snowcat [4.5K]

A double negative equals a positive so this is essentially:
-34+55
Of which equals 21

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3 years ago

Scores on the Critical Reading part of the SAT exam in a recent year were roughly Normal with mean 495 and standard deviation 11

Karolina [17]

Answer:

Step-by-step explanation:

We use the central limit theorem to solve this question.

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a large sample size can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$