All categories

2 years ago

11. 6.2 m B 1.8m Calculate the value of x. NOT TO SCALE

Mathematics

1 answer:

soldier1979 [14.2K]2 years ago

3 0

Answer:

24.19

Step-by-step explanation:

$\tan(x) = \frac{6.2}{13.8} \\ x = { \tan}^{1} \frac{6.2}{13.8} \\ x = 24.19320899$

or the value of x can be 24.20

You might be interested in

Pleaseeee help meeeeeee

Maslowich

That my dear your answer would be 16 degrees hope this helped

5 0

3 years ago

It is estimated that approximately 10.5% of Americans are afflicted with diabetes. Suppose that a new diagnostic test is being c

Alla [95]

Answer:

0.03

Step-by-step explanation:

Percentage of americans with diabetes = 10.5% = 0.105

Percentage of americans without diabetes = 89.5% = 0.895

Adults over 40 with diabetes tested positive = 95% = 0.95

Adults over 40 with diabetes tested negative = 5% = 0.05

Adults over 40 without diabetes tested positive = 3.5% = 0.035

Adults over 40 without diabetes tested negative = 96.5% = 0.965

The probability of selecting an adult over 40 without diabetes but positive diagnosis;

= 0.895 * 0.035

= 0.031325

= 0.03

5 0

3 years ago

Lawrence middle school is painting a circle on their playground with a radius of 7 feet what will be the total area of the circl

nikklg [1K]

Answer:

153.86 feet squared

Step-by-step explanation:

Area of circle = πr²

r is the radius and its already given which is 7 feet so we just plug in the numbers.

area = 3.14*7²

area = 153.86 feet²

3 0

3 years ago

Your Turn: Using the figure, a

yawa3891 [41]

The first thing you should see in this case is that the triangles are proportional.
We have then that:
((a) / (c)) = ((d) / (a))
Step 1:
Go a multiplying:
((a) / (c)) * (a) = (d)
Step 2:
Pass c multiplying:
(a) * (a) = (d) * (c)
Step 3:
Same basis, exponents are added:
a ^ (1 + 1) = (d) * (c)
Step 4:
a ^ 2 = c * d
Finally
((a) / (c)) = ((d) / (a)) -------> a ^ 2 = c * d

4 0

3 years ago

Suppose that 275 students are randomly selected from a local college campus to investigate the use of cell phones in classrooms.

Rainbow [258]

Answer:

Correct option: As the sample size decreases, the margin of error increases.

Step-by-step explanation:

The (1 - α) % confidence interval for population proportion is:

$CI=\hat p\pm z_{\alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }$

The margin of error in this confidence interval is:

$\\ MOE=z_{\alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }$

The sample size n is inversely related to the margin of error.

An inverse relationship implies that when one increases the other decreases and vice versa.

In case of MOE also, when n is increased the MOE decreases and when n is decreased the MOE increases.

Compute the new margin of error for n = 125 as follows:

$\\ MOE=z_{\alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }=1.96\times \sqrt{\frac{0.40(1-0.40)}{125} }=0.086$

*Use z-table for the critical value.

For n = 125 the MOE is 0.086.

And for n = 275 the MOE was 0.058.

Thus, as the sample size decreases, the margin of error increases.

7 0

3 years ago

11. 6.2 m B 1.8m Calculate the value of x. NOT TO SCALE​

11. 6.2 m B 1.8m Calculate the value of x. NOT TO SCALE