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S_A_V [24]
2 years ago
13

Suppose that y varies inversely with x.Write an equation for the inverse variation Y=4 when x=7

Mathematics
1 answer:
myrzilka [38]2 years ago
4 0

Answer:

If y varies inversely as x, then we write it as:

y = k/x


where k is some constant.


If we multiply both sides of this equation by x we get an equation for k:

k = x*y


We are given that y=4 when x=7, therefore:

k = 7*4 = 28


Put this back into our original equation to get:

y = 28/x



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pshichka [43]

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Answer:

  y = -7x

Step-by-step explanation:

The line goes through the origin, so the y-intercept is b=0.

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6 0
2 years ago
Billy is playing a game using a bag with 11 marbles inside. The bag contains 3 red, 3 orange, 1 yellow, 2 purple marbles, and 2
Dmitrij [34]

Answer: 3/55

Step-by-step explanation:

From the information given, the bag contains 3 red, 3 orange, 1 yellow, 2 purple marbles, and 2 Pink marbles. Each time he picks an orange marble, she will win a prize.

If he picks a marble the first time, the probability of picking an orange marble will be 3/11. After that we will have 10 marbles left as one has been picked and have 2 orange marbles left, then the probability of picking another orange marble will be 2/10.

Therefore, the probability he will win a prize on both picks will be:

= 3/11 × 2/10

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= 3/55

4 0
2 years ago
A gorilla population is decreasing at a rate of 8% every year. What is the decay factor for this situation?
Roman55 [17]

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0.92

Step-by-step explanation:

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3 years ago
I am so grateful if you help
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Answer:#4 is 3L Starwberry juice and 6L orange Jucie.

Step-by-step explanation:

8 0
2 years ago
I don’t know what to do after this
Bumek [7]

THE answer is 7 1/6 Please go to cymath and you’ll see how to work it out


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