3 years ago

Did I get this right? If I did t could someone explain it to me

2 answers:

8 0

You are correct, by using vertical line test, all these are functions except graph b because there is more than one y output to one x input.

Kisachek [45]3 years ago

3 0

Answer:

Yes, you are correct.

Step-by-step explanation:

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The mean amount spent by a family of four on food is $500 per month with a standard deviation of $75. Assuming that the food cos

Alexeev081 [22]

Answer:

$z=\frac{x- \mu}{\sigma}$

And replacing we got:

$z=\frac{425-500}{75}= -1$

And we can calculate this probabilit using the normal standard distribution or excel and we got:

$P(z$

Step-by-step explanation:

If we define the random variable of interest "the amount spent by a family of four of food per month" and we know the following parameter:

$\mu = 500, \sigma = 75$

And we want to find the following probability:

$P(X$

And we can use the z score formula given by:

$z=\frac{x- \mu}{\sigma}$

And replacing we got:

$z=\frac{425-500}{75}= -1$

And we can calculate this probabilit using the normal standard distribution or excel and we got:

$P(z$

5 0

3 years ago

Please help me this is for a grade and i rly need this ! :(

Iteru [2.4K]

Answer:

y=1/2x-3

Step-by-step explanation:

8 0

3 years ago

Solve for x. Reduce any fractions to lowest terms. Don't round your answer, and don't use mixed fractions. 54x+64 49x + 59

never [62]

Answer:

x=-1

Step-by-step explanation:

54x+64=49x+59

subtract 64

54x=49x-5

subtract 49x

5x=-5

divide by 5

x=-1

7 0

3 years ago

Which of the following equations is of the 2nd degree complete?

Komok [63]

Answer:

it's D

Step-by-step explanation:

i just know what I am talking about

4 0

2 years ago

Write mixed number as an improper fraction.9 5/8

Vinil7 [7]

The Answer to your question is 77/8

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3 years ago