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zubka84 [21]
3 years ago
11

I don’t under this .

Mathematics
2 answers:
melomori [17]3 years ago
6 0

Answer:

The answer is QR,RS, and ST

Step-by-step explanation:

i hope this helps .

dybincka [34]3 years ago
6 0
Answer:QR,RS and ST
Explanation:
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Pls help I don’t get any of them
JulijaS [17]

Answer:

Step-by-step explanation:

28.   Area of the circle = πr^{2} where r is the radius of the circle.

       Given diameter = 14m, therefore radius = \frac{14}{2} = 7m

       Now area of the circle = 49\pi ^{2} or = 49 * 3.14 * 3.14 = 483.12m^{2}

29. Volume of cylinder = πr^{2}h = π*1.5^{2} * 3 = 6.75π cu. feet or 21.195 cu. feet

30. A ball resembles a sphere. Volume of the sphere = \frac{4}{3} \pi r^{3}

      Given diameter = 30inches; Therefore, radius = 15 inches

 Now, Volume of the ball = \frac{4}{3} \pi 15^{3} = 4500π cu. inches or 14310 cu.inches

7 0
3 years ago
I need help finding the domain and range of this graph
SIZIF [17.4K]

Answer:

Step-by-step explanation:

Okay so to find the domain and range we need to find the x values and the y values: the domain is x and the range is y. Therefore the start of our x values can be concluded as -5 and the end is 5, so our domain will be -5 < x < 5: Note, I couldn't put the less than or equal to symbol. SO now our range is the values that are up and down, the range does down at 1 and the range is the highest at 3 so we can determine the range is 1 < y < 3. This is a continuous graph, so there is continuous x values and y values in this graph, so it's simple to use the start and the end of the domain and range followed by the possible y and x values which is represented by y and x.

Hope this helps. :)

8 0
3 years ago
Suppose you buy a $50 coffee maker in an area where the sales tax is 8%. When you check out, 8% of $50 would be added to your to
ASHA 777 [7]

Answer:

4

Step-by-step explanation:

8% is also 8/100. This would be true for all percents 0 to 100%. If it were 42% it can be written as 42/100.

So, 8% is 8/100. If you want to find 8/100 of 50 multiply them.

8/100 * 50/1 = (8*50) /100

400/100 = 4

7 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
(5x3 + 3)2 = (5x3)2 + (3)2 = 25x6 + 9 is this correct
faust18 [17]

Answer:

No!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! NO NO NO NO NO... SEE BELOW!!!!!!

Step-by-step explanation:

LOL I like caps!!! and !'s

To question

If 5x3 is 5x^3 then...

5x^3 times 2 equals 10x^3 no 10x^6

So the end result will be 10x^3\\ + 9

5 0
3 years ago
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