6.5B Proportions

If a car travels 150 miles in 3 hours, what is the unit rate in miles per hour?

• 40 miles per hour

• 50 miles per hour

• 60 miles per hour

• 70 miles per hour

What is a proportion?

• A proportion is a type of fraction.

• A proportion is an equation that states that two ratios are equal.

• A proportion is a method of solving equations.

• A proportion is a statistical measure of variability.

How do you solve a proportion?

• Add the two fractions together and simplify.

• Cross-multiply the terms and then solve for the unknown variable.

• Subtract the smaller fraction from the larger one.

• Multiply both sides by the least common denominator.

What does it mean if two ratios are equivalent?

• They represent different relationships between quantities.

• They represent the same relationship between quantities.

• They can be added together to form a new ratio.

• They are always equal to one another.

What is the significance of understanding proportions in everyday life?

• It helps in making comparisons, scaling recipes, and solving problems in finance, cooking, and more.

• It is only useful for mathematical calculations.

• It has no real-world applications.

• It is primarily used in scientific research.

What is the formula for finding the unit rate?

• The unit rate is found by multiplying the quantity by the number of units.

• The unit rate is found by dividing the quantity by the number of units.

• The unit rate is found by adding the quantity to the number of units.

• The unit rate is found by subtracting the number of units from the quantity.

How do you set up a proportion for scaling recipes?

• Set up a proportion using the original recipe quantities and the desired quantity to find the new amounts.

• Use random numbers to adjust the recipe quantities.

• Only double the original quantities for scaling.

• Ignore the original quantities and just use the desired amount.

What is the cross-multiplication method?

• Cross-multiplication involves adding the numerators of both ratios.

• Cross-multiplication involves multiplying the numerator of one ratio by the denominator of the other ratio.

• Cross-multiplication involves dividing the denominators of both ratios.

• Cross-multiplication involves subtracting the denominators from the numerators.

How do you find the missing value in a proportion?

• By adding the two known values together.

• By cross-multiplying and then dividing.

• By taking the average of the known values.

• By subtracting the smaller value from the larger value.

How can you express a proportion as a fraction?

• By writing it in the form a/b = c/d.

• By adding the two numbers together.

• By multiplying the two numbers together.

• By writing it as a decimal.