All categories

3 years ago

What are the new cordinates?

Mathematics

2 answers:

Maslowich3 years ago

7 0

(-3,0), (-3,-6), (1,4), (0,-1)

velikii [3]3 years ago

6 0

Answer:

(-3, 0), (0, -1), (-3, -5), (1, -4)

Step-by-step explanation: Just move the dots two to the left and four down. Then connect the dots to the coordinates

You might be interested in

The teen shop stores sweaters in boxes there are 2 sweaters in the first box 4 sweaters in the second box 6 sweaters in the thir

Xelga [282]

Answer:32

Step-by-step explanation:

4 0

3 years ago

Which number is a factor of both 20 and 35?

yarga [219]

Find the factors of 20 and 35.

20:

1, 2, 4, 5, 10, 20

35:

1, 5, 7, 35

1 and 5 are both factors of 20 and 35.

8 0

3 years ago

Read 2 more answers

Which of the following could be the measure of a pair of consecutive angles of a rhombus?

LiRa [457]

Your answer would be A. 122° and 58° because both angles have to equal 180°

4 0

3 years ago

Men are believed to have a slightly longer average length of short hospital stays than women; 5.2 days versus 4.5 days respectiv

Georgia [21]

Answer:

Since our calculated value is lower than our critical value, $z_{calc}=2.02$ , we have enough evidence to FAIL to reject the null hypothesis at 1% of singificance. So there is not nough evidence to conclude that mean for men it's significantly higher than the mean for female.

Step-by-step explanation:

1) Data given and notation

$\bar X_{1}=5.2$ represent the mean for group men

$\bar X_{2}=4.5$ represent the mean for group women

Assuming these values for the remaining data:

$\sigma_{1}=1.2$ represent the population standard deviation for the sample men

$\sigma_{2}=1.5$ represent the population standard deviation for the sample women

$n_{1}=32$ sample size for the group men

$n_{2}=30$ sample size for the group women

z would represent the statistic (variable of interest)

$p_v$ represent the p value

2) Concepts and formulas to use

We need to conduct a hypothesis in order to check if the mean for men it's higher than the mean for women, the system of hypothesis would be:

H0: $\mu_{1} \leq \mu_{2}$

H1: $\mu_{1} > \mu_{2}$

If we analyze the size for the samples both are higher than 30, and we know the population deviation's, so for this case is better apply a z test to compare means, and the statistic is given by:

$z=\frac{\bar X_{1}-\bar X_{2}}{\sqrt{\frac{\sigma^2_{1}}{n_{1}}+\frac{\sigma^2_{2}}{n_{2}}}}$ (1)

z-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

3) Calculate the statistic

We have all in order to replace in formula (1) like this:

$z=\frac{5.2-4.5}{\sqrt{\frac{1.2^2}{32}+\frac{1.5^2}{30}}}=2.02$

4) Find the critical value

In order to find the critical value we need to take in count that we are conducting a right tailed test, so we are looking on the normal standard distribution a value that accumulats 0.01 of the area on the right and 0.99 of the area on the left. We can us excel or a table to find it, for example the code in Excel is:

"=NORM.INV(1-0.01,0,1)", and we got $z_{critical}=2.33$

5) Statistical decision

Since our calculated value is lower than our critical value, $z_{calc}=2.02$ , we have enough evidence to FAIL to reject the null hypothesis at 1% of significance. So there is not nough evidence to conclude that mean for men it's significantly higher than the mean for female.

6 0

4 years ago

Ellie is renting a paddle boat. The boat rents for a 5 plus 3.50 per hour. She wants to spend under $30 altogether Write an ineq

Arada [10]

3.50x + 5 < 30

Ellie wants to spend less than 30, so it’ll be less than.

4 0

3 years ago