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2 years ago

WILL GIVE 5 STARS

Mathematics

1 answer:

k0ka [10]2 years ago

3 0

Answer:

Step-by-step explanation:

to know:

-to be paralel the lines have to have the same slope

-to be perpendicular the slope has to be negative invers of thhe other

-to be neither has to be none of the above two

equation to compare to is

y=mx+b where m is the slope

if your equation does not have this form make it have this form

2y=3x+1 so divide by 2

y= $\frac{3}{2}$ x+1 so here the slope is $\frac{3}{2}$

4x+6y=14 so subtract 4x and then divide by 6 to isolate y

6y= -4x+14

y= $\frac{-4}{6}$ x + $\frac{14}{6}$ symplify

y= $\frac{-2}{3}$ x + $\frac{7}{3}$ so the slope here is $\frac{-2}{3}$

So if you compare the slopes you can see that are negative reciprocal of eachother so the lines are perpendicular

and so on...

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Solve the inequality (picture)

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Answer:

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Step-by-step explanation:

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The first three towers in a sequence are shown. The nth tower is formed by stacking n blocks on top of an n times n square of bl

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Answer:

The 99th tower contains 9900 blocks.

Step-by-step explanation:

From the question given, we were told that the nth tower is formed by stacking n blocks on top of an n times n square of blocks. This implies that the number of blocks in n tower will be:

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Now let us use the diagram to validate the idea.

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3 years ago

A number, y, is five times another number, x. The sum of the two numbers is 42. Write the system of equations.

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

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$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

In this question:

Mean $\mu$ , standard deviation $\sigma$

a. Find the probability of a pregnancy lasting X days or longer.

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