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Margaret [11]
3 years ago
11

Identify the variation as direct, inverse, joint or combined. A = πr^2

Mathematics
1 answer:
Reika [66]3 years ago
7 0

Answer:

1. y = 7x. This is an example of direct variation as the value of y also increases if the value of x is increased.

2. xy = 24. This is an example of inverse because the value of y is decreased when x is increased. 

3. F = 4/R. This is inverse variation for the same reason as number 2.

4. m/n = 4. Direct variation. For the same reason as number 1.

5. i = 2pr. Joint variation. The value of i is dependent on the values of two other variables.

6. R = cl/r². Joint variation.

7. A = pir². Direct variation. I believe pi here is for π, leaving only A being dependent only to value of r. 

8. V= pir²h. Joint variation. 

Step-by-step explanation:

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Please answer this correctly without making mistakes
boyakko [2]

Answer:

105/4 or 26.25 mi

Step-by-step explanation:

hillsdale to fairfax 8 7/8 = 71/8

fairfax to yardley = 17 3/8 = 139/8

71/8 + 139/8 = 105/4 or 26 2/8

7 0
3 years ago
Which function can be used to find the number of cells of bacteria in the population at time t
Nonamiya [84]

Answer:

db / dt = kb  

this becomes b(t) = Ce^(kt)  

C = 100, the initial population  

P(1) = 420 = 100 e^(1k)  

4.2 = e^k  

ln 4.2 = k  

a) thus, b(t) = 100 e^(t ln 4.2)  

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ln 100 = t ln 4.2  

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Step-by-step explanation:

6 0
2 years ago
In the last draw, the grand prize was won. If there are three winners, each would have received $ 720,000; if there are four win
larisa86 [58]

Answer:

b) 15 winners

Step-by-step explanation

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3 years ago
Find the slope given the following ordered <br><br> 2,-3 and 6,-13
saw5 [17]

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Simplify it and you get : -5/2

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7 0
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slavikrds [6]

Answer:

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Step-by-step explanation:

I = 200     T=200/4000 0.2  = 2.5 years

P= 4000

R = 2%  0.2

T = ?  

4 0
3 years ago
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