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2 years ago

Write the decimal as a percent 2/500 =__%

Mathematics

2 answers:

Tanya [424]2 years ago

7 0

Answer:

0.04

Step-by-step explanation:

that's your answer have a nice day

frozen [14]2 years ago

7 0

Answer:

It's 0.04

Step-by-step explanation:

You might be interested in

(15 points)

Maslowich

Answer:

Each of the legs of isosceles right triangle is 5 $\sqrt{3}$

Step-by-step explanation:

Watch the attached figure for the isosceles right angled triangle

Looking at the figure we see that AB=5√6 and BC=CA

According to the Pythagorean theorem the square of the hypotenuse is equal to the sum of the squares of the other two sides of a right triangle.

1) Applying the Pythagorean theorem to the isosceles right triangle, we have

$BC^{2} + CA^{2} = AB^{2}$

2) Let BC=a and CA=a as they both are equal

So,

$a^{2} + a^{2} = (5\sqrt{6} )^{2}$

=> $2a^{2} = (5\sqrt{6} )(5\sqrt{6} )$

=> $2a^{2} = 5*5*\sqrt{6}*\sqrt{6}$

=> $2a^{2} = 25*6$ (since √6*√6 = (√6)²= 6)

=> $2a^{2} = 150$

3) Dividing both sides by 2, we get

$\frac{2a^{2} }{2} =\frac{150}{2}$

4) Cancelling out the 2's on the left, we get

$a^{2}$ = 75

5) Taking the square root on both sides, we have

$\sqrt{a^{2}} = \sqrt{75}$

=> a = 5 $\sqrt{3}$

So,

Each of the legs of isosceles right triangle is 5 $\sqrt{3}$

6 0

3 years ago

Drag the similar figure into the table

Lesechka [4]

Answer:

So actually #1 is answer. Thats because if we see last one it doesn't have a right angle but the original does. In the next one the angles dont match. The 23 and 67 degree angles are not in the original figure. We can see that the last one has those angles and the sides are switched and just multiplied by 2. Therefore the answer to this question is:

<h2><u>#1 is the answer</u></h2>

5 0

3 years ago

Swaziland has the highest HIV prevalence in the world : 25.9% of this country’s population is infected with HIV. The ELISA test

Verizon [17]

Answer:

1. If an individual from Swaziland has tested positive, what is the probability that he carries HIV ?

P=0.8249 or 82.49%

2. If an individual from Swaziland has tested negative, what is the probability that he is HIV free ?

P=0.9988 or 99.88%

Step-by-step explanation:

Make the conditional probability table:

Individual

Infected Not infected

ELISA

Positive

Negative

Totals

The probability of an infected individual with a positive result from the ELISA is obtained from multiplying the probability of being infected (25.9%) with the probability of getting a positive result in the test if is infected (99.7%), the value goes in the first row and column:

P=0.259*0.997=0.2582 or 25.82%

Individual

Infected Not infected Totals

ELISA

Positive 25.82%

Negative

Totals

The probability of a not infected individual with a negative result from the ELISA is obtained from multiplying the probability of not being infected (100%-25.9%=74.1%) with the probability of getting a negative result in the test if isn't infected (92.6%), the value goes in the second row and column:

P=0.741*0.926=0.6862 or 68.62%

Individual

Infected Not infected Totals

ELISA

Positive 25.82%

Negative 68.62%

Totals

In the third row goes the total of the population that is infected (25.9%) and the total of the population free of the HIV (74.1%)

Individual:

Infected Not infected Totals

ELISA

Positive 25.82%

Negative 68.62%

Totals 25.9% 74.1%

Each column must add up to its total, so the probability missing in the first column is 25.9%-25.82%=0.08%, and the ones for the second column is 74.1%-68.62%=5.48%.

Individual

Infected Not infected Totals

ELISA

Positive 25.82% 5.48%

Negative 0.08 68.62%

Totals 25.9% 74.1%

Individual

The third column is filled with the totals of each row:

Infected Not infected Totals

ELISA

Positive 25.82% 5.48% 31.3%

Negative 0.08 68.62% 68.7%

Totals 25.9% 74.1% 100%

The probability A of tested positive is 31.3% and the probability B for tested positive and having the virus is 25.82%, this last has to be divided by the possibility of positive.

P(B/A)=0.2582/0.313=0.8249 or 82.49%

The probability C of tested negative is 68.7% and the probability D for tested negative and not having the virus is 68.62%, this last has to be divided by the possibility of negative.

P(D/C)=0.6862/0.687=0.9988 or 99.88%

4 0

2 years ago

What number should be added to both sides of the equation to complete the square?

adelina 88 [10]

X2 - 10x = 7

You move the constant to the right which looks like: - 10x = 7 - 2

- 10x = 5

Then you divide both side by -10. The answer is:

X = -1/2 OR x = -0.5

8 0

2 years ago

Write an equation to represent the following statement. 51 5151 divided by 3 33 is k kk.

enot [183]

The equation is a quotient statement, and the equation is 51/3 = k

<h3>How to determine the equation?</h3>

The statement is given as:

51 divided by 3 is k

Represent the word "is" with "="

So, we have:

51 divided by 3 = k

Represent the word "divided" with "/"

So, we have:

51 / 3 = k

Hence, the equation is 51/3 = k