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Leona [35]
3 years ago
10

S is inversely proportional to t . When s = 0.5 , t = 7 Work out t when s = 5

Mathematics
1 answer:
shtirl [24]3 years ago
4 0

Answer:

t = 0.7

Step-by-step explanation:

s = k/t  where 'k' is the constant of variation

given:  0.5 = k/7 so k = 3.5

5 = 3.5/t

5t = 3.5

t = 0.7

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PLEASE HELP FOR 48 POINTS PLEASE!<br><br><br><br> show/explain your answer and work
pentagon [3]

Answer:

c  This is the direct variation

Step-by-step explanation:

The equation for direct variation is y= kx

Solving this for k

y/x =k

So y/x must be a constant

a.  9/3 =3

2/7 does not =3  so this is not a direct variation


b 1/2 = .5

-3/6 = -.5

This is not the same so this is not a direct variation


c.  27/9 =3

18/6 =3

9/3 =3

This is a direct variation with a constant of 3


d 5/-7 = -5/7

1/-3 = -1/3

This is not the same so this is not a direct variation

4 0
3 years ago
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Can somebody help me ?? please .
solniwko [45]

Answer: First let’s find x.

A straight line adds up to 180 degrees. So wen know that X and the 81 degree angle should add up to 180, so x+81=180 is our equation. Let’s solve.

Subtract 81 from 180

You get x=99 degrees.

Let’s now find Y.

We know because of the alternate interior angles property that x will have to equal 3y-9. We already know x is 99. Let’s set up an equation. 3y-9=99 let’s add our 9. We get 108. Divide by 3. We get y=36.

Step-by-step explanation:

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6 0
3 years ago
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Every 4th visitor to a museum gets a free bumper sticker.Every 10th visitor to that museum gets a free key chain.Which visitor n
Aneli [31]
I'm not 100% positive but I believe it would be the 14th person. 10+4=14. That's just my guess.
5 0
3 years ago
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Which of the following ratios is NOT equivalent to start fraction 4 over 8 end fraction ?
zhenek [66]

Answer:

there is no options but anything that doesnt equal 1/2 esstentially because 4/8 is the same as 1/2

4 0
3 years ago
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Yanka [14]

Answer:

This may take awhile, but I'm willing to do it for you!

Step-by-step explanation:

  1. C
  2. B
  3. D
  4. B (2, 1/2)
  5. C
  6. It was too badly formatted I couldn't depict what it was asking. Sorry.
  7. A
  8. B
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  10. B
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Very glad I was able to help!!

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