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3 years ago

I NEED HELP ASAP!!!! PLEASE HELP!!!

Mathematics

1 answer:

IRISSAK [1]3 years ago

6 0

Answer:

y= 2x-3 m=2 b= -3

Step-by-step explanation:

we distribute 2(x-2)

y-1 = 2(x-2)

y-1 = 2x-4

then add one to both sides

y-1= 2x -4

+1 +1

since it is negative four and you are adding one it would be -3

y= 2x -3 that is your slope intercept form.

y= mx +b so m=2 and b= -3

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HELP QUICK I NEED AN ANSWER RN PLS

amm1812

Answer:

r = 3.7 cm

Step-by-step explanation:

19.02 = 1/2π(2radius) + diameter

expanding:

19.02 = 1/2(3.14)(2r) + 2r

19.02 = 3.14r + 2r = 5.14r

r = 19.02/5.14 = 3.7 cm

4 0

3 years ago

If 400ml of milk is used for 8 pancakes then how much is used for 6

Naddik [55]

To solve this equation, you will need to set up a proportion where you set two fractions equal to each other.

Let x = the unknown amount of milk

$\frac{400}{8} = \frac{x}{6}$

You would then crossmultiply and solve for x.

8x = 400(6)

8x = 2400

x = 2400/8

x = 300

You will need 300 mL of milk to make 6 pancakes if you previously needed 400 mL to make 8 pancakes.

3 0

3 years ago

Ice cream sales (in gallons) fluctuate from month to month, depending on the season. A local ice cream lover would like to condu

Oksi-84 [34.3K]

This is two independent sample test.

<u>Step-by-step explanation</u>:

Ice cream sales will fluctuate from month to month. So sales will differ every month. A separate sale will be made on Blank Slate Creamery.
A first sample test will be taken on Blank Slate Creamery. After that, the average value will be noted. Now sales will be noted on Ben & Jerry's. After that value will be added.
Now, these two values will be compared. We should check which has the highest value. Using this we can identify which ice cream has a higher record.

7 0

4 years ago

How do i solve this? what is the answer?

timurjin [86]

Answer:

solve what? the picture is not loading...

Step-by-step explanation:

I am so sorry I really want to help

7 0

4 years ago

According to a 2009 Reader's Digest article, people throw away approximately 11% of what they buy at the grocery store. Assume t

expeople1 [14]

Answer:

0.14% probability that the sample proportion exceeds 0.2

Step-by-step explanation:

I am going to use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

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 pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that $\mu = E(X)$ , $\sigma = \sqrt{V(X)}$ .