Anybody have an answer?

The black graph is the graph of y=f(x). Choose the equation for the red graph<br><br> Please help

miv72 [106K]

9514 1404 393

Answer:

b. y = f(x/2)

Step-by-step explanation:

The transformation ...

y = f(x/k)

represents a horizontal stretch by a factor of k.

Here, the red graph is a horizontal stretch of the black graph by a factor of 2. That is, k=2 in the above transformation.

y = f(x/2) . . . equation of the red graph

8 0

3 years ago

Please answer correctly !!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!

melisa1 [442]

Answer:

C

Step-by-step explanation:

So it’s pretty simple

A triangle’s hypotenuse (largest side of a triangle) had to be less than the two sides added together.

So if you add the 2 numbers and it’s greater than te hypotnuse, then its a possible triangle, if it’s less than the hypotnuse, there’s no way it can be a triangle.

So you add the first two since their the least and see if its less than and C is impossible becuase if you add the two, you’ll get 10+22=32 but the hypotnuse is 33 so it’s impossible.

The others are fine

6 0

3 years ago

Read 2 more answers

SURFACE AREA! Please help! (:

drek231 [11]

Answer:

7800 is your surface area

Step-by-step explanation:

5 x 12 x 10 x 13= 7800

8 0

3 years ago

The quality control manager at a light bulb factory needs to estimate the average life of a large shipment of light bulbs. The p

kirill115 [55]

Answer:

Null hypothesis: $\mu = 385$

Alternative hypothesis: $\mu \neq 385$

$z=\frac{350-385}{\frac{100}{\sqrt{64}}}=-2.8$

$p_v =2*P(z$

At the 0.05 level of significance is there evidence that the average life is different from 385 hours

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

Solution to the problem

Data given and notation

$\bar X=350$ represent the sample mean

$\sigma=100$ represent the population standard deviation for the sample

$n=64$ sample size

$\mu_o =385$ represent the value that we want to test

$\alpha=0.1$ represent the significance level for the hypothesis test.

z would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is different from 385, the system of hypothesis would be:

Null hypothesis: $\mu = 385$

Alternative hypothesis: $\mu \neq 385$

If we analyze the size for the sample is > 30 and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

We can replace in formula (1) the info given like this:

$z=\frac{350-385}{\frac{100}{\sqrt{64}}}=-2.8$

P-value

Since is a two sided test the p value would be:

$p_v =2*P(z$

At the 0.05 level of significance is there evidence that the average life is different from 385 hours

6 0

3 years ago

How many different 6-letter strings are made up of 2 a's, 2 b's and 2 c's?

RSB [31]

The answer to this question would be:90 different words/strings.

This is a question about probability. In this question, there are 3 different kinds of the letter that consist of 2 letter each. The same letter will be considered same, so the probability will lessen if there are more same letter. The calculation would look like this : 6!/(2! 2! 2!)= 90 different words/strings.

3 0

3 years ago