Arunner passes the 12-mi point after 2 hours and reaches the 15-mi point 30 minutes later. assuming a constant rate, find the speed of the runner.

6 mph

Step-by-step explanation:

Difference in distance

= 15 - 12

= 3 mi

time taken

= 30 mins

= 1/2 hour

Speed

= 3 ÷ 1/2

= 6 mph

22.5 ounces of oil should be mixed with 9 ounces of vinegar

An equation is an expression that shows the relationship between two or more variables and numbers.

Given that:

2 part vinegar 5 part oil.

Let y represent the amount of oil to be mixed with 9 ounces of vinegar.

y = (5/2) * 9 = 22.5 ounces

22.5 ounces of oil should be mixed with 9 ounces of vinegar

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