Ellen drove 357.9 miles. Her car gets about 21 miles per gallon. Which is the best estimate of how many gallons of gas Ellen used?

Answers

Answer 1

Answer: The best thing to do is to divide the amount she has driven (357.9) by the miles (21)
As you're looking for an estimate, you have to round them.
357.9 rounds to 360
21 rounds to 20
Therefore, you've got to divide them
360/20= 18
Therefore, Ellen has driven approximately 18 miles
Hope this helps :)

Answer 2

Answer:

When looking for an estimate, you have to round your numbers 21 rounded would become 20 and 357.9 would become 360. So next you would divide the numbers.

360 ÷ 20 = 18

So, Ellen would have used approximately 18 gallons of gas.

Hope this helps you. :-)

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Algebra 2 questions

What is the definition of a line segment

Answers

It's a point (with 0 dimensions) dragged up, down, left or right - forming a line (1 dimension).

It is a piece of a line

In 2008 the population of 10 to 14-year-olds in the United States was 24 84163 right this number in expanded form

Answers

(2,000,000) + (400,000) + (80,000) + (4,000) + (100) + (60) + (3) = 2,484,163

How do you model a decimal using a fraction

Answers

By eliminating decimal and implementing zeros in the denominator we transform the decimal value into a fraction value.

Given that,
To model a decimal using a fraction.

What is decimal value?

Decimal value is defined as showing the place value of the digits in a decimal number. If any proportion of the digit is lower than 1 it would be represented after the dot right to the absolute value,

Here,

Let's assume a decimal value, 0.25
Now in order to transform this decimal value in a fraction, we must eliminate the decimal point and add two zeros after one by implementing it into the denominator.
Since,

= 0.25 = 25 / 100 = 1 / 4

Thus, by eliminating decimals and implementing zeros in the denominator we transform the decimal values into fraction values.

Learn more about decimal values here,

brainly.com/question/19802955

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You model a decimal using a fraction :

multiply the denominator and numerator by 10 for every number after the decimal point after we change the decimal in fractions with the denominator 1

Further explanation

Fraction numbers are known as numerators and denominators

On a number line, fractions are expressed in points that lie between two integers

The general form of fractions is

$\large {\boxed {\bold {\frac {a} {b}}}$

a = numerator

b = denominator

Decimal numbers are numbers in which there are commas or decimal points.

The value of each number in decimal numbers is based on a comparison of the number 10

In a decimal system, the numbers have the following consecutive values (the place value of the digits in a number): hundred thousands, ten thousands, one thousands, hundreds, tens, ones, decimal points, tenths, hundredths, thousandths, ten thousandths, hundred thousandths

Between ones and tenth values separated by commas (decimal points)

Decimal numbers can also be expressed as proper or mixed fractions

The position of each digit in decimal numbers is important.

Because the decimal number is based on the number 10, As we move left, each position is 10 times bigger, and As we move right, each position is 10 times smaller

On the left of the decimal point is a whole number

To convert a Decimal to a Fraction there are several steps:

1. Write down the decimal in fractions with the denominator 1
2. We multiply the denominator and numerator by 10 for every number after the decimal point.
3. Simplify the fraction if needed

Example:

$\displaystyle 0.459$