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zavuch27 [327]
3 years ago
6

What is the coefficient in the expression below 42+2c

Mathematics
1 answer:
svp [43]3 years ago
3 0

Answer:

the coefficient is 2

Step-by-step explanation:


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Vicci designed a square tile in art class. Each corner of the square tile has a measure of 90 degrees. 30° Which equation could
miv72 [106K]
X=90 degrees you can get the answer by adding up all the angles
4 0
3 years ago
The distribution of a sample of the outside diameters of PVC pipes approximates a normal distribution. The mean is 14.0 inches,
lakkis [162]

Answer:

A. 13.9 and 14.1 inches

See explanation below.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the outside diameters of a population, and for this case we know the distribution for X is given by:

X \sim N(14,0.1)  

Where \mu=14 and \sigma=0.1

If we want the middle 68% of the data we need to have on the tails 16% on each one

For this part we want to find a value a, such that we satisfy this condition:

P(X>a)=0.84   (a)

P(X   (b)

Both conditions are equivalent on this case. We can use the z score again in order to find the value a.  

As we can see on the figure attached the z value that satisfy the condition with 0.16 of the area on the left and 0.84 of the area on the right it's z=-0.994. On this case P(Z<-0.994)=0.16 and P(z>-0.994)=0.84

If we use condition (b) from previous we have this:

P(X  

P(z

But we know which value of z satisfy the previous equation so then we can do this:

z=-0.994

And if we solve for a we got

a=14 -0.994*0.1=13.9

And since the distribution is symmetrical for the upper limit we can use z = 0.994 and we have:

z=0.994

And if we solve for a we got

a=14 +0.994*0.1=14.1

So the correct answer for this case would be:

A. 13.9 and 14.1 inches

3 0
3 years ago
What is the value of x in simplest radical form?
Vikki [24]

Answer:

It's 90 because we'll make it equal

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Denny had five kittens (K) that he wants to sell for $15.00 each.Tge cost to raise the kittens so far has been $10.00 each. What
madreJ [45]
Five kittens will give Denny $75.
Raising them cost $50.
So Denny will make a profit of $15.
3 0
3 years ago
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Is 0.06 greater than 0.062?
Sati [7]
No, 0.062 is greater by a very small amount of point 2
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