All categories

3 years ago

Please help me answer this question thanks

Mathematics

2 answers:

Pani-rosa [81]3 years ago

5 0

It is the last answer

Luden [163]3 years ago

5 0

It is y=2x. 1 times two is obviously 2. Three times two, six. Four times two, eight. Five times two, ten. And ten times two is twenty. So, it is the last one, y=2x

You might be interested in

Ten engineering schools in the United States were surveyed. The sample contained 250 electrical engineers, 80 being women; 175 c

steposvetlana [31]

Answer:

There is a significant difference between the two proportions.

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for difference between population proportions is:

$CI=(\hat p_{1}-\hat p_{2})\pm z_{\alpha/2}\times\sqrt{\frac{\hat p_{1}(1-\hat p_{1})}{n_{1}}+\frac{\hat p_{2}(1-\hat p_{2})}{n_{2}}}$

Compute the sample proportions as follows:

$\hat p_{1}=\frac{80}{250}=0.32\\\\\hat p_{2}=\frac{40}{175}=0.23$

The critical value of <em>z</em> for 90% confidence interval is:

$z_{0.10/2}=z_{0.05}=1.645$

Compute a 90% confidence interval for the difference between the proportions of women in these two fields of engineering as follows:

$CI=(\hat p_{1}-\hat p_{2})\pm z_{\alpha/2}\times\sqrt{\frac{\hat p_{1}(1-\hat p_{1})}{n_{1}}+\frac{\hat p_{2}(1-\hat p_{2})}{n_{2}}}$

$=(0.32-0.23)\pm 1.645\times\sqrt{\frac{0.32(1-0.32)}{250}+\frac{0.23(1-0.23)}{175}}\\\\=0.09\pm 0.0714\\\\=(0.0186, 0.1614)\\\\\approx (0.02, 0.16)$

There will be no difference between the two proportions if the 90% confidence interval consists of 0.

But the 90% confidence interval does not consists of 0.

Thus, there is a significant difference between the two proportions.

4 0

3 years ago

Need help with this math lesson

ki77a [65]

Rational numbers are numbers that can be turned into fractions. So A, C, D, E, F, G, H, and I are rational numbers

3 0

4 years ago

Sebastian earned $250 dollars from helping his dad at the store. He has plans to spend one fifth of his earnings. How much money

Akimi4 [234]

Answer:

Step-by-step explanation:

you multiply 1/5 and 250/1 to get 250/5 then simplify to get 50

3 0

4 years ago

Read 2 more answers

Which system of equations is equivalent to the following system? (5 points) 2x + 4y = 14 4x + y = 20

fredd [130]

Answer:

Step-by-step explanation:

4x+y=20 multiplied by (-4) gives you -16x-4y=-80

3 0

3 years ago

Ming used the calculations shown to find out how much he would spend on 6 pound of ground beef if 10 pounds cost $25.00 what was

ElenaW [278]

Answer:

6 pounds of ground beef cost $15.

Step-by-step explanation:

$\frac{6}{10} :\frac{y}{25}$

10 × y = 6 × 25

10y = 150

10y ÷ 10 = 150 ÷ 10

y = 15

3 0

3 years ago