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3 years ago

PLEASE ANSWER QUESTION

Mathematics

1 answer:

CaHeK987 [17]3 years ago

8 0

Answer:

60+80+x=180

Step-by-step explanation:

__ + __ + __ = __ fill in the blanks

if 60, 80, and y have a sum of 180, the equation is 60+80+x=180

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Answer:

Step-by-step explanation:

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3 years ago

A shoe store uses a 50% markup for all of the shoes it sells. What would be the selling price of a pair of shoes that has a who

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Step-by-step explanation:

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3 years ago

Read 2 more answers

For a language test with normally distriuted scores, the mean was 70 and the standard deviation was 10. Approximately what perce

Alborosie

Answer: 84.13%

Step-by-step explanation:

Given : The scores in a a language test with normally distributed.

Mean : $\mu=70$

Standard deviation: $\sigma= 10$

Let x be the random variable that represents the scores of students.

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

For x= 60 , we have

$z=\dfrac{60-70}{10}=-1$

The probability f test takers scored a 60 or above :-

$P(x\geq60)=P(\geq-1)=1-P(z$

Hence, the percentage of test takers scored a 60 or above = 84.13%

6 0

4 years ago