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Ganezh [65]
3 years ago
15

How can you understand porportions

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
4 0

A proportion is a statement that two ratios are equal.  A ratio is a comparison of two different quantities.  "Miles per hour" is a ratio.  "Dollars per pound" is a ratio.  A proportion is that two of these things are equal.

For example, paying $2/pound for apples is the same as paying $6 for 3 pounds:

   \dfrac{\$2}{1 \text{ pound}} = \dfrac{\$6}{3 \text{ pounds}}

That's a portion.

When working with proportions in word problems, you start by setting up one ratio/fraction where you know all the information.  You then set up the second one that's missing a piece of information, but you make sure to set it up using the same structure.

If your first ratio is "miles over hours," then the next ratio has to have the same organization.

If your first ratio is "rise over run," then the next ratio has to have the same organization.

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If $3,000,000 is invested at 6% interest compounded continuously, how much
g100num [7]

Answer:

  $24,498,509.74

Step-by-step explanation:

The formula for the value as a function of time is ...

  V(t) = P·e^(rt)

Filling in the numbers and doing the arithmetic, we have ...

  V(35) = 3,000,000·e^(0.06·35) ≈ 24,498,509.74

Compounded continuously for 35 years, the investment will be worth $24,498,509.74.

3 0
3 years ago
Equivalent factored form for 10x^2+15x-9=2x^2+x-14
yanalaym [24]
Factored form - x= -1/2, -5/4
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3 years ago
Write an equation of a line that is parallel to y=-3x+5 that passes through the point (0,-4)
elena55 [62]

Answer:

{ \rm{y =  - 3x + 5}}

Gradient = -3

• Parallel lines have the same gradient, therefore gradient, m is -3

{ \rm{y = mx + c}}

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y intercept is -4

{ \boxed{ \boxed{ \mathfrak{answer : }}{ \rm{\:  \: y =  - 3x - 4}}}}

6 0
3 years ago
Jamie has a deck of 60 sports cards, of which some are baseball cards and some are football cards. Jamie pulls out a card random
Mice21 [21]
If it were like that, 9/20 would be baseball card. \frac{9}{20} = \frac{x}{60}
x=27 since 20x3=60
5 0
3 years ago
Read 2 more answers
1.2÷182.4 what is the answer
Helga [31]

Answer:

0.0007

Step-by-step explanation:


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2 years ago
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