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Serhud [2]
3 years ago
11

HELP QUICKKKKKKK

Mathematics
2 answers:
tangare [24]3 years ago
5 0

Answer:

304

Step-by-step explanation:

8 x 13 = 104

+200

304

prohojiy [21]3 years ago
4 0

Answer:

96feet

Step-by-step explanation:

U want to find displacement

So

Displacement = velocity x time

Velocity = - 8 feet/s ( negative bcuz going down)

Time = 13

Displacement = - 8 x 13

= - 104

Therefore

200 - 104 = 96feet

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14. Suppose that 1 out of every 10,000 doctors in a certain region is infected with the SARS virus; in the same region, 20 out o
hram777 [196]

Answer:

The person in the at-risk population is much more likely to actually have the disease

Step-by-step explanation:

The probability of a randomly selected doctor having the disease is 1 in 1,000 (P(I)=0.0001).

The probability that a doctor is infected with SARS, given that they tested positive is:

P(I|+)=\frac{P(I)*0.99}{P(I)*0.99+(1-P(I))*0.01}\\P(I|+)=\frac{0.0001*0.99}{0.0001*0.99+(1-0.0001)*0.01}\\P(I|+)=9.9*10^{-3}

The probability of a randomly selected person from the at-risk population having the disease is 20 in 100 (P(I)=0.20).

The probability that a person in the at-risk population is infected with SARS, given that they tested positive is:

P(I|+)=\frac{P(I)*0.99}{P(I)*0.99+(1-P(I))*0.01}\\P(I|+)=\frac{0.2*0.99}{0.2*0.99+(1-0.2)*0.01}\\P(I|+)=0.962

Therefore, the person in the at-risk population is much more likely to actually have the disease

3 0
3 years ago
Helppp thanksss!!!!!!
SashulF [63]

Answer:

1 mile

Step-by-step explanation:

in 20 minutes Stuart has gone 1 mile

in 20 minutes Brandy has gone 4 miles

therefore they meet 1 mile from Stuart's house

5 0
3 years ago
Read 2 more answers
It is urgent.so anyone solve this
dlinn [17]

Answer:

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Is there a specific rule to follow when dividing simplified fractions? i mean if you were to have the numerator and demoninator
Margaret [11]

Answer:

Step-by-step explanation:

This method consists of multiplying the numerator of the first fraction by the denominator of the second fraction and then writing the answer in the resulting fraction’s numerator.

Next, we multiply the denominator of the first fraction by the numerator of the second fraction, and then write the answer in the resulting fraction’s denominator*.

Lastly, we simplify the final fraction.

For example, in order to divide the fraction

dividing fractions

We multiply the numerator of the first fraction (3) by the denominator of the second fraction (10). This gives us the numerator for the final fraction: 3 x 10 = 30.

Next, we multiply the denominator of the first fraction (4) by the numerator of the second fraction (6). This gives us the denominator of the final fraction: 4 x 6 = 24.

dividing fractions

The last step is to simplify the fraction. Since both numbers are multiples of 6, we can divide the numerator and denominator by 6.

30 ÷ 6 = 5

24 ÷ 6 = 4

Therefore, the result of the division is 5/4.

dividing fractions

Method 2 of dividing fractions: Inverting and multiplying

Step 1: Invert the second fraction. That is, swap the numerator for the denominator.

Step 2: Simplify any numerator with any denominator.

Step 3: Multiply across.

For example, we are going to divide:

dividing fractions

Step 1: We invert the second fraction 6/4. This becomes 4/6.

Step 2: We simplify the numerators with the denominators.

Numerators are:

12 = 2 x 2 x 3

4 = 2 × 2

Denominators are:

5 = 5

6 = 2 × 3

We can simplify both from numerator and denominator a 2 and a 3. We call this process “cross canceling” if one numerator has a common factor with the other denominator.

And we multiply across:

dividing fractions

7 0
3 years ago
Read 2 more answers
Johnny bought 6 movie tickets and spent $54 dollars he bought 3/6 children's tickets that cost $8 dollars each the other tickets
DanielleElmas [232]
8 X 3 = 24

54 - 24 = 30

Adult tickets cost $30
6 0
4 years ago
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