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3 years ago

Timothy is trying to solve the following equation for his math homework.

Mathematics

1 answer:

aleksandrvk [35]3 years ago

5 0

18t=4

to get the answer you have to divide 4/18

the answer is both 2/9 or 0.2222222222

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9. A retaining wall on the playground is

soldi70 [24.7K]

Dghfjgjghcjjfjfjgjgjcjxjxjf

6 0

3 years ago

Write an equation of the circle with center (-3, 4) and radius 6.

Sedaia [141]

Answer:

(x+3)²+(y-4)²=36.

Step-by-step explanation:

For this, we need to use the equation of a circle which is:

(x-h)²+(y-k)²= r²

Simply substitute the center values for 'h,k', and the radius for 'r'.

This will give you:

(x+3)²+(y-4)²=36.

3 0

3 years ago

Are the equations 3x - -9 and 4x - -12 equivalent? Explain.<br> Please Help!!

konstantin123 [22]

No because when you do 3*--9 = 27 and 4*--12 =48

7 0

3 years ago

Shirley has a circular rug in her dining room that has an area of 36 pie Square meters what is the radius of the circular rug

ValentinkaMS [17]

Answer: The radius of the circular rug is 6 meters.

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

<em>Area of a circle (A) = pi r² </em>

Where r is the radius:

Replacing with the values given:

36 pi=pi r²

Dividing both sides by pi:

36 = r²

√36= r

r = 6 meters

So, the radius of the circular rug is 6 meters.

Feel free to ask for more if needed or if you did not understand something.

8 0

3 years ago

Read 2 more answers

Bad gums may mean a bad heart. Researchers discovered that 82% of people who have suffered a heart attack had periodontal diseas

saveliy_v [14]

Answer:

37.27% probability that he or she will have a heart attack.

Step-by-step explanation:

Bayes Theorem:

Two events, A and B.

$P(B|A) = \frac{P(B)*P(A|B)}{P(A)}$

In which P(B|A) is the probability of B happening when A has happened and P(A|B) is the probability of A happening when B has happened.

In this question:

Event A: Periodontal disease

Event B: Heart attack

Researchers discovered that 82% of people who have suffered a heart attack had periodontal disease, an inflammation of the gums.

This means that $P(A|B) = 0.82$

Only 33% of healthy people have this disease.

This means that $P(A) = 0.33$

Suppose that in a certain community heart attacks are quite rare, occurring with only 15% probability.

This means that $P(B) = 0.15$

If someone has periodontal disease, what is the probability that he or she will have a heart attack

$P(B|A) = \frac{0.15*0.82}{0.33} = 0.3727$

37.27% probability that he or she will have a heart attack.

6 0

3 years ago