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Serhud [2]
4 years ago
11

Caroline, Colin & Sarah share some money. Caroline gets 1 /9 of the money. Colin and Sarah share the rest in the ratio 1:3.

What proportion does Colin get?
Mathematics
1 answer:
laiz [17]4 years ago
4 0

Answer:

Colin gets  \frac{2}{9} of the total money

Step-by-step explanation:

If we let the total amount be "90" (or any multiple of 9), then the solution gets much easy.

Let total money be 90.

Caroline gets 1/9, so that is:

1/9 * 90 = 10

Remaining is 90 - 10 = 80

This 80 is divided in the ratio 1:3, that means Colin gets 1 part and Sarah gets 3 part. That is 1 + 3 = 4 parts altogether.

80 divided in 4 parts is 80/4 = 20 each part.

Colin gets 1 part, that is 1 * 20 = 20

Colin gets 20 OUT OF 90 (total initial).

<em>What proportion is that? We simply divide and reduce!!</em>

<em />

20/90 = 2/9

Colin gets  \frac{2}{9} of the total money

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Match the information on the left with the appropriate equation on the right.
zaharov [31]

Answer:

See attachment below

Step-by-step explanation:

For the first option, we are given m = - 2 / 3, b = 3. This is likely in the point - slope form y = mx + b, where m = slope and b = y - intercept. Thus, the equation of the line in point - slope form given this information, should be y = - 2 / 3x + 3. It seems as if none of the following equations match this form, so let us interchange the equation a bit,

y = - 2 / 3x + 3,

y + 2 / 3x = 3,

2x + 3y = 9 - Option C

_______________________________________________________

Next we are given m = - 3 / 2, and that this line passes through the point ( 4, - 1 ). Substitute m as - 3 / 2, x as 4, y as - 1, knowing point ( 4, - 1 ), into the form y = mx + b - solving for b.

- 1 = ( - 3 / 2 )( 4 ) + b,

b = 5,

Thus the equation in point - slope form should be y = - 3 / 2x + 5. None of the choices match this, so let us again alter the equation,

y = - 3 / 2x + 5,

2y = - 3x + 10,

- 2y = 3x - 10 - Option A

_______________________________________________________

( 6, 3 ) and ( 3, 1 ) is given to lie on this line. The slope of the line should be as follows,

Slope = 3 - 1 / 6 - 3 = 2 / 3

Now let us determine the y - intercept ( b ) by substitute one of the points, say ( 6, 3 ). In this case x = 6, and y = 3,

3 = ( 2 / 3 )( 6 ) + b,

b = - 1,

y = 2 / 3x - 1 = Option D

Take a look at the attachment below for further help;

6 0
3 years ago
A recipe for trail mix calls for 50 grams of almonds for every 2 cups of oats. The line represents the relationship between the
AnnyKZ [126]

Answer: for every 1 cups of oats there are 25 grams of almonds

Step-by-step explanation:

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3 0
3 years ago
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Answer:

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Step-by-step explanation:

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ND
Korvikt [17]

Step-by-step explanation:

As you have done till

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