4.5ft is what circumference of a circle

On a trip of d miles to another city, a truck driver's average speed was x miles per hour. On the return trip, the average speed was y miles per hour. The average speed for the round trip was 30 miles per hour.

Suppose that you add 10 to all of the observations in a sample. how does this change the sample mean? how does it change the sample standard deviation?

If Keegan haas 12 nickels and dimes in his pocket and they have a combined value of 80 cents how many of each coin does he have

Find the minimum value of the parabola y = x2 + x.

Write a word problem that can be solved by finding a number that I have for as a factor

How many tall cups of coffee will it take to equal the number of ounces in one venti

Select and solve the equation that represents the following real-world situation: A herd of 86 sheep needed vaccinations. After some of the sheep received their vaccinations, there were 57 sheep that still needed to be vaccinated.

CosA/1-tanA + sinA/1-cotA=sinA+cosA

Verify sinx-siny/cosx-cosy=-cot ((x+y) / 2)

How can you use absolute value to represent a negative number in a real-world situation?