c) Allowing for unlimited repeats, what is the probability if we selected a 7 letter arrangement at random that it would contain no repeated letters? d) How many 7 letter arrangements...

c) Allowing for unlimited repeats, what is the probability if we selected a 7 letter arrangement at random that it would contain no repeated letters? d) How many 7 letter arrangements...

It takes 4 people 20 minutes to load 10 items on to a truck. How many items can 8 people load in one hour?

The reflector of a satellite dish is in the shape of a parabola with a diameter of 4 feet and a depth of 2 feet. To get the maximum reception we need to place the antenna at the focus. a...

Jane went shopping and bought 2 pairs of shoes for $80.00, the price of the second pair of shoes was $15 less than 3 times the first pair of shoes. What's the price of both shoes?

I need to know how you got the answer as well.

Word problem

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Russ has a car that averages 9.8 miles per gallon. Mike's car averages 39.2 miles per gallon. How many times more per gallon does Mike's car averages the Ross's car?

How deep down is the hole if you start drilling a hole at 50 degree angle for 300 feet starting at 0 feet

A traffic enforcer is chasing a passenger car that is speeding at 110 kph. The traffic enforcer is traveling at 120 kph and is 4 km behind the passenger car. How long will it take the police car to...

ake, for instance, your cell phone plan. Your cell phone carrier charges you a flat rate of $60 a month for unlimited talk/text and 4 GB of data. You are charged $5 for every GB you go over. If one...

If my rent is 1482 and I agree to pay thirty more than them a month, how much do we all pay?

Three islands have a total area of 5321 mi island a is 3261 mi larger than island b and island b i 196 mi larger than c. What is the area of each island

131

Bill and Jill sold candy bars to raise money for their band trip. Bill generated $176 in revenue. Jill thought she could get more revenue by lowering the price of her candy bars. She lowered her price...

Determine k so that the following has exactly one real solution. (Enter only the positive answer.) 5x^2+kx+3=0

While still in the hospital, the doctor writes an order for an antibiotic at 3mg/kg/day. You are nervous now because the nurse was wrong before. Assuming that you weigh 123 lb, determine how...

A new camp site will contain t tent sites, with 25 square meters of land each, and r recreational vehicle (RV) sites with 40 square meters of land each. No more than 90 camp sites can be built...

how much should the shoe store charge to maximize revenue?

Three waiters at a local restaurant earned different amounts of money the past week. Jennifer earned $40 less than twice the amount tony earned. Chris earned $60 more than tony. How much did each...