Probability,

There are 100 students 10 who are left handed

twenty are selected at random

what is the probability that 80% of the students are right handed

On a certain summer's day, 519 people used the public swimming pool. The daily prices are $1.25 for children and $2.25 for adults. The receipts admission totaled $906.75 How many children and how many adults swam at the public pool that day?

What is 62.19 x 32.5

Johnny is booking a band and a DJ for a dance, and wants to keep the cost of the entertainment under $750. A band can play for part of the time at an hourly rate of $140, and a DJ can play for the remaining time at an hourly rate of $89.

Show work and show answer as a mixed number for 6x+11-16x=-21

Write and solve a word problem that involves multiplying by a mixed number.

A plus 5 is the side of an equilateral triangle. find it's perimeter

Which best describes independent events? The results of all events have different individual probabilities. The results of any previous events affects the probability of future events. The results of all events have the same individual probability.

6 more than a number w is 2

Eloise is planning on retiring soon. When she first began working she invested $1500 in a retirement fund. The percent increase in her investment is 95%. How much does she have in the account now? A) $1,425 B) $2,925 C) $5,850 D) $142,500

A cell phone factory has a cost of production C (x) = 66x + 30,000 where x is the total number of attendees at the concert. The venue charges $72 per ticket. After how many people buy tickets does the venue break even?