3 years ago

What the answer? quickly please?

Mathematics

1 answer:

Andreyy893 years ago

5 0

Answer:

the 1st choice

Step-by-step explanation:

MARK BRAINLIEST

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9x ≥117 which numbers below belong to the solution set of the inequality

lakkis [162]

9 x ≥ 117

Divide both sides by 9 :

9 x / 9 ≥ 117 / 9

x = 117 / 9

x ≥ 13

hope this helps!

7 0

3 years ago

Evaluate the expression 72/x2-2 for x=3

Rzqust [24]

Answer:46

Step-by-step explanation:

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2 years ago

The repeating decimal number 8.2151515... written as a fraction is

Blababa [14]

Closest would be 8 43/200

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3 years ago

Given m||n, find the value of x.<br> m<br> t<br> (5x-5)<br> (6x-27)

almond37 [142]

Step-by-step explanation:

due to the laws of symmetry of the angles of 2 crossing lines (and parallel lines are simply repeating and mirroring these angles), both angles must be equal.

5x - 5 = 6x - 27

-5 = x - 27

x = 22

4 0

2 years ago

A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100.

Crank

Answer: 1.25

Step-by-step explanation:

Given: A college-entrance exam is designed so that scores are normally distributed with a mean $(\mu)$ = 500 and a standard deviation $(\sigma)$ = 100.

A z-score measures how many standard deviations a given measurement deviates from the mean.

Let Y be a random variable that denotes the scores in the exam.

Formula for z-score = $\dfrac{Y-\mu}{\sigma}$

Z-score = $\dfrac{625-500}{100}$

⇒ Z-score = $\dfrac{125}{100}$

⇒Z-score =1.25

Therefore , the required z-score = 1.25

6 0

3 years ago