What is the value of x in the triangles to the right?<br> A. 9<br> B. 12<br> C. 15<br> D. 17.5

When you multiply one negative number by a positive number the product is...

Anettt [7]

Answer:

A negative number

Step-by-step explanation:

example: (-1) *( +1)= -1

6 0

2 years ago

In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack Obama a great deal, a moderat

Alexus [3.1K]

Answer:

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 1004, \pi = 0.53$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.4894$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.5706$

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

3 0

2 years ago

GIVING BRAINLEZST ANSWERR FAST!!!

Alex Ar [27]

Answer:

B- $38.00

Step-by-step explanation:

Since there are two adults, you would multiply the cost of adults by number of adults. in this case that would be $10.75 x 2= $21.50. do the same for the kids and you will get $5.50 x 3 = $16.50. add 16.50 and 21.50 and you will get $38.00 which is your answer

hope this helped :D

4 0

2 years ago

The graph of f(x) = -2^2 was transformed to create g(x) = -(x+3)^2. Which of these describes the transformation from the graph o

mash [69]

I’m assuming you meant -2x^2 so It would be shifted to the left 3 it would be compressed from having 2 to 1.

3 0

2 years ago

CAN SOMEONE PLS HELP ME (ill give brianlsit)

blsea [12.9K]

Answer:

x=3(one solution)

Step-by-step explanation:

2x+2=3x-1

subtract 2 from both sides

2x=3x-3

subtract 3x from both sides

-x=-3

divide both sides by -1

x=3

6 0

2 years ago

What is the value of x in the triangles to the right? A. 9 B. 12 C. 15 D. 17.5