The length of time a particular smartphone's battery lasts follows an exponential distribution with a mean of ten months. A sample of 64 of these smartphones is taken. Find the probability that the sample mean is between seven and 11.

Vertex form of f (x) = 1/2x squared

What's 54/99 simplified

Out of 16 spins, a purple and red spinner landed on purple 9 times and on red 7 times. Based on the experimental probability, how many of the next 64 spins would you expect to land on red? A. 28 B. 29 C. 30 D.

2. Simplify. -48 O A. 4213 OB. - 4213 O C.-4v3 OD. 4V3

A motor bike can run for 10 minutes on $.30 worth of fuel. How long could it run on $1.05 worth of fuel?

Jasper has a coin collection consisting of quarters and dimes. He has 50 coins worth $8.60. How many of each coin does he have?

Y = 3x + 19 y = 5x + 33 Solve this system of equation by substitution

A vet's office offers boarding for cats and dogs. boarding a cat cost$20 per night and a dog cost $25 per night if the vet's office boards 18 total animals in one night and earns a total of $400 which equations can be used to find the number of

There are 101 students going on a field trip to pan for gold. If they are going in vans that hold 9 students each, how many vans are needed? How many students will ride in the van that isn't full? vans are needed.

David expressed the ratio of the number of books that he owns to the number of DVDs that he owns as 27:11. Which statement could be true based upon this relationship?