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3 years ago

5/2x - 1.5 = 3.5 what is the value of x

Mathematics

1 answer:

azamat3 years ago

8 0

Answer:

Step-by-step explanation:

Add 1.5 to both sides:

5/2x-1.5+1.5=3.5+1.5

5/2x=5

Multiply both sides by 2/5

(2/5)*(5/2x)=(2/5)*(5)

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Answer:

Probability that the student scored between 455 and 573 on the exam is 0.38292.

Step-by-step explanation:

We are given that Math scores on the SAT exam are normally distributed with a mean of 514 and a standard deviation of 118.

Let X = Math scores on the SAT exam

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The z score probability distribution for normal distribution is given by;

Z = $\frac{X-\mu}{\sigma}$ ~ N(0,1)

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