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3 years ago

What is the length of bc ?

1 answer:

6 0

In triangle ABC, angle A is a right angle, and angle B= 45 degrees. (also AC is 12 ft). What is the length of BC? If your answer is not an integer, leave it in simplest rascal form.

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I don’t quite understand this

ExtremeBDS [4]

A. (-5, 6), (2,5), (-1,1)

7 0

3 years ago

The test to detect the presence of respiratory syncytial virus is 97% accurate for a person who has the virus and 99% accurate f

user100 [1]

$\textrm{97 percent accurate for individual with the virus}$

$\text{3 percent inaccurate}$

$\textrm{99 percent accurate for an individual}$

$\textrm{1 percent inaccurate probability}$

$\textrm{Probability of infected:}$

$.0055$

$\textrm{Probability of not being infected}$

$1 - .0055 = .9945$

$\textrm{Combine it all together}$

$0.0055 * 0.03 + 0.9945 * 0.01 = 0.01011$

$\textrm{The probability that a randomly chosen person gets an incorrect result is 0.01011}$

$\textbf{Answer}$

$\textrm{0.01011}$

5 0

3 years ago

What is the mean for this list of numbers 4,8,12,13

Gwar [14]

Answer:

4, 8, 12, 13

In order to find the mean you must add all of the values together and then divide by the number of numbers. 4 + 8 + 12 + 13 = 37

Now we divide: 37 ÷ 4 = 9.25

So the mean is 9.25

<h2> I hope this helps! :)</h2>

3 0

3 years ago

Three times the difference of eight and twice a number is five times the number.

Softa [21]

Answer:

Step-by-step explanation:

3(2n-8)=5n distribute 3

6n-24=5n combine like terms

-24=-n divide by -1 on both sides

24=n

n=24

7 0

4 years ago

7) Jan has two spinners. One has 3 equal sections labeled A, B, and C. The other has 4 equal sections labeled 1, 2, 3, and 4. Sh

Elanso [62]

One out of three results on the first spinner is A, and one out of four on the second is 3. Thus, the overall probability is 1/3*1/4=1/12.

8 0

4 years ago