# Math homework help

## A+ Answers

1. Which one of the following formulas correctly expresses this statement: The number x is equal to another number n plus the square root of 3. A. x = 3n2

B. x = n + 32 C. x = n + √3 D. x = √n + 3

2. The formula for finding the volume of a pyramid is v = bh/3. What formula should you use to find the altitude h?

A. h = v/3b

B. h = 3b/v

C. h = 3bv

D. h = 3v/b

3. The perimeter of an isosceles triangle is p = 2a + b. Find the numerical value of a if p = 10 and b = 3. A. 31/ 2

B. 13

## A bag has 5 green marbles and 10 brown marbles

A bag has 5 green marbles and 10 brown marbles. Half of the brown marbles are made of plastic. A marble is selected at random from the bag. What is the probability that it is a brown, plastic marble?

If an area of 300 square centimeters contains .28 ug/mL of a substance how much of the substance would be in 100 square centimeters?

## In a math class with 30 students enrolled, 23 students are female

In a math class with 30 students enrolled, 23 students are female and 7 students are male. Suppose a random sample of 5 students is taken. What is the probability that exactly 1 of the 5 selected is a male?

At a particular car dealership, it has been calculated over time that customers who test drive a vehicle have a 7% chance of purchasing a car on the same day. Suppose that a salesman, in one day, takes four customers on a test drive of one of the vehicles at the dealership.

## Differential Equations

i need to solve some questions

## Amanda, Bryce, and Corey enter a race in which they have to run

Amanda, Bryce, and Corey enter a race in which they have to run, swim, and cycle over a marked course. Their average speeds are given in the table. Corey finishes first with a total time of 1 hr 41 min. Amanda comes in second with a time of 2 hr 45 min. Bryce finishes last with a time of 3 hr 30 min. Find the distance (in mi) for each part of the race.

Average speed (mi/h)

## Find the volume of the solid obtained by rotating the region bounded by

Find the volume of the solid obtained by rotating the region bounded by x=1+y^{2} and y=x-3 about the y-axis

## Final Paper (Statistics) - 24 Hours. Need only A. Any other Grade will not be accepted

## Final Paper

The Final Paper provides you with an opportunity to integrate and reflect on what you have learned during the class.