An amusement park employee records the ages of the people who ride the new roller coaster during a fifteen-minute period.

American football is the highest-paying sport on a per-game basis. Given that the quarterback is considered the most important p

vodka [1.7K]

Answer:

wtfx

Step-by-step explanation:

asdadsasdds

7 0

2 years ago

What is the value of x?

kipiarov [429]

First of all, let’s find CB.
sin(45°) = CB : 6sqrt(2)
CB = 6
Now we can find CD
cos(60°) = x : 6
x = 3

7 0

2 years ago

Two sides of a triangle have the same length. The third side measures 6 m less than twice the common length. The perimeter of th

Zepler [3.9K]

The answer is <span>The two equal sides have a length of 4,</span>
<span>the third side has a length of 6.</span>

8 0

3 years ago

A poll conducted in 2013 found that 55% of U.S. adult Twitter users get at least some news on Twitter (Pew, 2013). The standard

alina1380 [7]

Answer:

The 99% confidence interval for the fraction of U.S. adult Twitter users who get some news on Twitter is between 49.34% and 60.66%, which means that we are 99% sure that the true percentage of US adult Twitter users who get some news is in this interval.

Step-by-step explanation:

Confidence interval:

A confidence interval has the following format:

$M \pm zs$

In which M is the sample mean, z is related to the confidence level and s is the standard error.

55% of U.S. adult Twitter users get at least some news on Twitter (Pew, 2013). The standard error for this estimate was 2.2%.

This means that $M = 55, s = 2.2$

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 $Z = 2.575$ .

Lower bound of the interval:

$M - zs = 55 - 2.575*2.2 = 49.34$

Upper bound:

$M + zs = 55 + 2.575*2.2 = 60.66$

The 99% confidence interval for the fraction of U.S. adult Twitter users who get some news on Twitter is between 49.34% and 60.66%, which means that we are 99% sure that the true percentage of US adult Twitter users who get some news is in this interval.

6 0

3 years ago

Truck a has a flat fee of 35$ and 0.45$ per mile how much does it cost to go 10 milesi

kompoz [17]

Answer:

39$ and 50 cents

Step-by-step explanation:

because 35 plus 4.5= 39.5

3 0

3 years ago