What percent of 390 is 39?

Phil has three times as many rocks as peter together they have 48 rocks how many more rocks does Phil have been Peter

You stand 100' from the base of a tower. The tower is 1,058' tall. What is the angle from where you are standing to the top of the tower?

If Tangent theta = negative three-eighths, which expression is equivalent to cotangent theta? StartFraction 1 Over negative three-eighths EndFraction Negative three-eighths + 1 StartRoot 1 + StartFraction (Negative eight-thirds) squared EndRoot

Evaluate 6 2/5-3= 3/5 3 3 2/5 3 3/5

What is the domain and range of the function { (0,2), (-2,4), (2,8), (1,6), (-5,0) }

Is 20 is 50% what is the value

Shemar tips at the rate of 75:5 waiters. How many waiters will he be tipping, if he can afford a $90 tip?

The temperature at 12 noon was 10°C above zero. If it decreases at the rate of 2°C per hour until midnight, at what time would the temperature be 8°C below zero? What would be the temperature at mid-night?

Hector waters his lawn if it does not get least 1 1/2 inches of rain each week. it has rained 3/8 inch already this week. which inequality represents the number of inches of rain, r, hector lawns still needs so that he won't have to water it

Prove that x is a subset of y then x union z is a subset of y union z for all sets x y and z