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3 years ago

8

What is 8+7times15 so what is it tell me now

1 answer:

Inessa05 [86]3 years ago

5 0

The answer is 113. As said by the calculator

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Anyone able to answer this?

Ksivusya [100]

Answer:

B) (4,5)

Step-by-step explanation:

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2 years ago

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The original cost of a cell phone is x dollars. The phone is on sale for 35% off. What would be the simplified expression for th

Nonamiya [84]

X · 0.65 = y or x-(x · 0.35)= y y=sales cost

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3 years ago

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VMariaS [17]

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3 years ago

I can't find the solution, 1+1! It hurts my brainnnnnn help please

Shtirlitz [24]

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two

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3 years ago

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The burning time of a very large candle is normally distributed with mean of 2500 hours and standard deviation of 20 hours. Find

dezoksy [38]

Answer: C.-1.5

Step-by-step explanation:

Given: The burning time of a very large candle is normally distributed with mean $(\mu)$ of 2500 hours and standard deviation $(\sigma)$ of 20 hours.

Let X be a random variable that represent the burning time of a very large candle.

Formula: $Z=\dfrac{X-\mu}{\sigma}$

For X = 2470

$Z=\dfrac{2470-2500}{20}\\\\\Rightarrow\ Z=\dfrac{-30}{20}\\\\\Rightarrow\ Z=\dfrac{-3}{2}\\\\\Rightarrow\ Z=-1.5$

So, the z-score they corresponds to a lifespan of 2470 hours. =-1.5

Hence, the correct option is C.-1.5.

7 0

2 years ago