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3 years ago

Which phrase has the same meaning as 12y - 2?

Mathematics

2 answers:

Anestetic [448]3 years ago

4 0

B is your answer. You subtract 2 from the sum of 12y

Yanka [14]3 years ago

3 0

D, 12y is also 12 • y and when there is an answer to a multiplication problem, it’s a product. and that minus 2 is subtracting.

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Marina CMI [18]

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8 0

3 years ago

Convert mixed number 5/6 x 2 1/2

Rus_ich [418]

Answer:

2 and 1/12

Step-by-step explanation:

you need to take 2 1/2 and convert it to the common denominator of 6

so 1/2 * 3 = 3/6. and 2*6 = 12. add the 12 and 3 to get 15/6. which is equivalent to 2 1/2

so multiply 15/6 * 5/6 and get 75/36 to get or 2 and 3/36. reduce down to 2 and 1/12

4 0

2 years ago

Read 2 more answers

According to a poll, 55 % of Americans do not know that GOP stands for Grand Old Party (Time, October 17, 2011). Assume that thi

Ivenika [448]

Answer:

$\hat p \sim N (p , \sqrt{\frac{p(1-p)}{n}})$

The mean is given by:

$\mu_{\hat p} = 0.55$

And the deviation:

$\sigma_{\hat p} =\sqrt{\frac{0.55*(1-0.55)}{953}}= 0.0161$

Step-by-step explanation:

For this case we assume that the true population proportion of Americans do not know that GOP stands for Grand Old Party is 0.55 and we select a random sample of n = 953 americans

For this case we assume that we satisfy the conditions to use the normal approximation for $\hat p$

1) np >10 , n(1-p)>10

2) Independence

3) Random sample

4) The sample size is less than 10% of the population size

We assume that all the conditions are satisfied and the distribution for $\hat p$ would be:

$\hat p \sim N (p , \sqrt{\frac{p(1-p)}{n}})$

The mean is given by:

$\mu_{\hat p} = 0.55$

And the deviation:

$\sigma_{\hat p} =\sqrt{\frac{0.55*(1-0.55)}{953}}= 0.0161$

3 0

3 years ago

What is the least common factor of 14 and 21?

Drupady [299]

the least common factor of 14 and 21 is 2

3 0

3 years ago

One week the height of a plant increased from 30 cm to 35 cm. Work out the percentage increase.

RSB [31]

Plant height increased after 1 week: 35 cm - 30 cm = 5cm

Percentage increase: (5 : 30) x 100% = 16.66%

6 0

2 years ago