2 years ago

Pls help me with this question

Mathematics

1 answer:

wel2 years ago

7 0

I believe it’s c because a negative times a negative is equal to a positive number.

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X · 1 + x/1 = _____.

mrs_skeptik [129]

First,

(x•1)+(x/1) = x+x

Then,

x+x=2x

8 0

2 years ago

Please help me i will give brainlist<br> 25% of 40

elena55 [62]

Answer:

___ x 40 = 10

100

Consider 25 out of hundred since its a percent and the key word "cent" means 100. The keyword "of" means multiplication.

4 0

3 years ago

How do you solve 23=-7-5x

melomori [17]

23=−7−5x

23=−5x−7

−5x−7=23

−5x−7+7=23+7

−5x=30

(−5x/−5)=(30/−5)

x=−6

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2 years ago

The nicotine content in a single cigarette of a particular brand has a distribution with mean 0.4 mg and standard deviation 0.1

a_sh-v [17]

Answer:

Step-by-step explanation:

For this case we can define the random variable of interest as: "The nicotine content in a single cigarette " and for this case we know the following parameters:

$\mu = 0.4, \sigma = 0.1$

And for this case we select a sample size of n =100 and we want to find the following probability:

$P(\bar X$

And for this case we can use the z score formula given by:

$z =\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

And replacing we got:

$z= \frac{0.38-0.4}{\frac{0.1}{\sqrt{100}}}= -2$

And we can find the required probability with the normal standard table and we got:

$P(z$

8 0

2 years ago

A parking garage opens at 8 AM. The graph shows the total number of cars in the garage. How many cars were parked in the garage

FromTheMoon [43]

I believe 198 or 197 cars were in the Garage

8 0

2 years ago

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