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valkas [14]
3 years ago
12

Write a proportion to represent the scenario. Then Solve.

Mathematics
1 answer:
koban [17]3 years ago
7 0

Answer:

100 seconds

Step-by-step explanation:

12 arrows in 20 seconds

60 is 5 times of 12

multiply 20 by 5

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motikmotik
Combine like terms, find greatest common factors, and reduce fractions
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3 years ago
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If there are approximately 1.8 million cars in Vancouver and if each car travels an average of 17,500 kilometres in a year, how
Goryan [66]

Rates are used to measure a quantity over another.

<em>The 1.8 million cars use </em>1.85 \times 10^{10}<em> liters each year</em>

Given

Cars = 1.8\ million

d = 17500km --- distance

r = 40miles/gallon

First, we calculate the number (n) of gallons used by each car

r = \frac{d}{n}

Solve for n

n = \frac{d}{r}

So, we have:

n = \frac{17500km}{40miles/gallon}

n = \frac{17500km}{40miles}gallon

Convert miles to kilometers

n = \frac{17500km}{40km \times 1.60934}gallon

n = \frac{17500km}{64.3738km}gallon

n = 271.85\ gallon

The number of gallons (N), used by all the cars is:

N = n \times cars

N = 271.85 \times 1.8\ million

N = 489330000

Convert to liters

N = 489330000 \times 3.78541L

N = 1852314675.3L

In scientific notation to 2 decimal places, we have:

N = 1.85 \times 10^{10}L

<em>Hence, the number of liters used is </em>1.85 \times 10^{10}<em />

Read more about distance and rates at:

brainly.com/question/24659604

4 0
3 years ago
The range of a data set is 18. if the smallest number in the set is 9, What is the largest number?
tankabanditka [31]
Range is the difference between the largest and the smallest variable. If the range is 18 and the smallest number is 9. Add 9 to 18.
9+18= 27. 27 is the largest number.
7 0
3 years ago
Good at math &amp; need points? help!!
Greeley [361]

Answer:

5

Step-by-step explanation:

5 0
3 years ago
Greatest to least 0.04; 0.5; 0.021; 0.133
babymother [125]
0.5, 0.04, 0.133, 0.021
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3 years ago
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