find the center (h,k) and radius r of the circle with the given equation: x^2 + y^2 + 6x - 8y = 56
Word problem: When making a phone call using calling card a call lasting 3 minutes costs $1.60. A call lasting 10 minutes costs $4.40. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that relates to the cost of making the call...
Word problem: Ken and Kara are 29 miles apart on a calm lake paddling towards each other. Ken paddles at 3 miles per hour. Kara paddles at 6 miles per hour. How long will it take them to meet?
Word problem: Radiator in a certain make needs to contain 50 liters of 40% antifreeze. The radiator now contains 50 liters of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
Write expression as a single quotient (49-x^2)^1/2 + 3x^2(49-x^2)^-1/2 ________________________________ 49 - x^2
factor... (x+4)^-3/5+(x+4)^-1/5+(x+4)^1/5 Please explain the process used to solve this type of expression. Answer should be in equation form if that helps....
simplify result leave in factored form 1-7/x _____ 1+7/x
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