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fomenos
3 years ago
6

If y varies inversely with x and y is 10 when x is 5, then what is y when x is 2?

Mathematics
1 answer:
Jobisdone [24]3 years ago
6 0

9514 1404 393

Answer:

  25

Step-by-step explanation:

Inverse variation means ...

  y = k/x

For the given values, we can find k to be ...

  k = xy = (5)(10) = 50

Then for x=2, we have ...

  y = 50/x

  y = 50/2

  y = 25 . . . when x=2

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Average Temperatures Suppose the temperature (degrees F) in a river at a point x meters downstream from a factory that is discha
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Answer:

Step-by-step explanation:

Average Temperatures Suppose the temperature (degrees F) in a river at a point x meters downstream from a factory that is discharging hot water into the river is given by

T(x) = 160-0.05x^2

a. [0, 10]

For x = 0

T(0) = 160 - 0.05 × 0^2

T(0) = 160

For x = 10

T(10) = 160 - 0.05 × 10^2

T(10) = 160 - 5 = 155

The average temperature

= (160 + 155)/2 = 157.5

b. [10, 40]

For x = 10

T(10) = 160 - 0.05 × 10^2

T(10) = 160 - 5 = 155

For x = 40

T(10) = 160 - 0.05 × 40^2

T(10) = 160 - 80 = 80

The average temperature

= (80 + 155)/2 = 117.5

c. [0, 40]

For x = 0

T(0) = 160 - 0.05 × 0^2

T(0) = 160

For x = 40

T(10) = 160 - 0.05 × 40^2

T(10) = 160 - 80 = 80

The average temperature

= (160 + 80)/2 = 120

6 0
3 years ago
Can someone help me please?
Soloha48 [4]

Answer

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Step-by-step explanation:

6 0
3 years ago
Neo is making invitations for their birthday party.
VMariaS [17]

Answer:

15%

Step-by-step explanation:

40=100%

20=50%

4=10%

2=5%

10%+5%=15%

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6 0
2 years ago
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Answer:

96 + x Less-than-or-equal-to 149

Step-by-step explanation:

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5 0
3 years ago
Read 2 more answers
What is the circumference of the circle 4.5m rounded to the nearest tenth
Andrew [12]
R≈0.72m
<span>Rounded Number:
</span> 0.7
6 0
3 years ago
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