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fomenos
3 years ago
9

Describe some data that when graphed would represent a proportional relationship. Explain your reasoning

Mathematics
2 answers:
OLga [1]3 years ago
7 0
The lines would go up and over at the same rate. They would have the same slope, like parallel lines.

Hope this helps!! :)
Alex787 [66]3 years ago
7 0

Answer:

A proportional relationship is "two quantities vary directly with each other."

Example:

The amount of gasoline you fill in your car and the amount you pay is a proportional relationship.

If 1 gallon of gasoline is $3, then the cost of 3 gallons of gasoline is $9.

Step-by-step explanation:

A relationship is between two quantities.

A proportional relationship is "two quantities vary directly with each other."

Say, if the quantity "x" increases, then the associated quantity "y" also increases.

For example,

y = 2x

Let's find the data.

<u>x </u>                <u>y</u>

0                 0

1                  2

2                 4

3                  6

As you can see when the value of "x" increases, the value of "y" also increases.

This is called proportional relationship.

Example:

The amount of gasoline you fill in your car and the amount you pay is a proportional relationship.

If 1 gallon of gasoline is $3, then the cost of 3 gallons of gasoline is $9.

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How many milliliters of syrup are in a 100-ml sample containing 6.55 g of syrup per 20 mL if the syrup's specific gravity is 1.3
sashaice [31]

Answer:

25 milliliters

Step-by-step explanation:

Given:

volume of sample = 100 ml

Syrup present in sample = 6.55 g per 20 mL

Therefore in 100 mL, amount of syrup present = \frac{\textup{6.55}}{\textup{20}}\times100

or

amount of syrup present in 100 mL sample = 32.75 grams

Now,

Specific gravity of the syrup = 1.31

also,

Specific gravity of the syrup = \frac{\textup{Density of syrup}}{\textup{Density of water}}

or

1.31 = \frac{\textup{Density of syrup}}{\textup{1 g/mL}}

or

Density of syrup = 1.31 g/mL

also,

Density = \frac{\textup{Mass}}{\textup{Volume}}

therefore,

1.31 = \frac{\textup{32.75}}{\textup{Volume of syrup in the sample}}

or

Volume of syrup in the sample = \frac{\textup{32.75}}{\textup{1.31}}

or

Volume of syrup in the sample = 25 milliliters

8 0
3 years ago
If c varies directly as (r + 1) and c = 8, when r= 3, calculate the value of r when c= 20.
Aneli [31]

Answer:

r = 9

Step-by-step explanation:

Given that c varies directly as (r + 1) then the equation relating them is

c = k(r + 1) ← k is the constant of variation

To find k use the condition c = 8 when r = 3, then

8 = k(3 + 1) = 4k ( divide both sides by 4 )

2 = k

c = 2(r + 1) ← equation of variation

When c = 20, then

20 = 2(r + 1) ← divide both sides by 2

10 = r + 1 ( subtract 1 from both sides )

9 = r

5 0
3 years ago
Read 2 more answers
What’s 4/5 divided by 3
Valentin [98]

Answer:

\frac{4}{15}

Step-by-step explanation:

remember when dividing with fractions, you are multiplying by the reciprocal.

this means

\frac{4}{5} \div3=\frac{4}{5}*\frac{1}{3}=\frac{4}{15}

6 0
3 years ago
Read 2 more answers
A field is to be fertilized at a cost of $0.08 per square yard. The rectangular part of the field is 95 yards long and the diame
dem82 [27]

this gives
total area of the field = 4655 sqyrd + 1884.79 sqyrd = 6539.79 sqyrd
 cost of fertilising 1 sqyrd = $ 0.08
 so cost of fertilising 6539.79 sqyrd = 6539.79 * $ 0.08 = $ 523.18

6 0
3 years ago
ing needs 3 cups of milk to make 30 cookies. How many ounces of milk would he need to make 120 cookies?
Llana [10]

Answer:

12 cup of milk.

Step-by-step explanation:

if 3 cups of milk can make 30 cookies it means 1 cup of milk can make 10 cookies then for 100 cookies we need 10 cup of milk and 30 more means 3 more so answer is 12

8 0
3 years ago
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