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- From a pool of 40 people, how many groups of 8 can we make, if a select 3 people out of the sample s
*By*:-Anierobi

From a pool of 40 people, how many groups of 8 can we make, if a select 3 people out of the sample size of 40 must be in every group formed. - What is equivalent to 9^3/4 ?
*By*:-Jennifer

(STEP-BY-STEP) - What’s the difference between calculus III and calculus based physics II?
*By*:-billrussell42

Calculus III is a math course, not a physics course!

Usually, "calculus III" covers functions of two and three variables, partial derivatives, multiple int - Comma question?
*By*:-crnio031109

On his time machine he traveled back to (75,000 / 75000) B.C.

Which is correct, 75,000 or 75000? Thanks! - Probability question?
*By*:-Jacob

Suppose an insect of a given species lives more than 5 days with a probability of 0.1. Given a group of 10 such bugs, what is the likelihood that at least one will be alive after 5 days - How would you solve this word problem?
*By*:-llaffer

A company purchases 200 VCR units at a price of $220 each. For each order of 200, there is a fee of $25 added as well.

If the company sells each VCR unit at a price marked up 30 percent, what is the profit per unit? - ) Craig drives 20 km/h faster than Marilyn. In the same time that Marilyn drives 225 km, Craig drive
*By*:-KB

Update:

Find the speed of each car. Use a proportion to set up the problem and solve the equation. - Kathy is deciding on her schedule for next semester.?
*By*:-Briana

Update:

Kathy is deciding on her schedule for next semester. She must take each of the following classes: English 101, Music 101, Biology 102, and Math 120. If there are 1717 sections of English 101, 1010 sections of Music 101, 1212 sections of Bio - I Need help with theses math questions, plz help, Thank You.?
*By*:-Camille

A jar contains 15 marbles. 7 of the marbles are white, 3 of them are red, and 5 of them are black.

a. If 2 marbles are chosen WITH replacement, find the probability of choosing 2 black marbles.

b. If 2 marbles are chosen WITHOUT rep - System of equations?
*By*:-Vic

Demonstrate that the following set of equations have inconsistent solutions:

3x - y - z = 5

x - 3y + 2z = 3

2x + 2y - 3z = -1

Thanks :) - Another Stats Question?
*By*:-Thomas Quinlan

A professor has made 20 exams of which 8 are hard, 7 are reasonable, and 5 are easy. The exams are mixed up and the professor selects 4 of them at random to give to four sections of the course she is teaching. What is the probability that no sections rece - Trying to find the height of a cone based on the radius at a given cross section?
*By*:-Cal

The cone is 7/16" diameter at its base. 3/8" above the base, the diameter is 5/16". What is the height of the cone, or what formula can I use to find it? - Nothing much?
*By*:-shriya

So basically 10800 divided by 8 is 1350. Divided by 8 again is 168.75. Divided by 8 is 21.09. Then multiplied by the three 9s gives 15374.61 which is right if entered in calculator the way I solved. But if in calculator the question is written as 10800(9/ - find all values a such that the tangent line to the curve f(x)=x^3-3x^2-9x at the point x=a is horiz
*By*:-az_lender

f'(x) = 3x^2 - 6x - 9.

This will be 0 when x^2 - 2x - 3 = 0, or

(x - 3)(x + 1) = 0.

The values of "a" are 3 and -1.

f(x)=x³-3x²-9x

f'(x) = 3x - How can you tell that V=x(11-2x)(8.5-2x) is a cubic graph type?
*By*:-Olivia

When multiplied out an x³ term will be obtained.

Multiply x(11-2x)(8.5-2x) = third degree polynomial

4x^3-39x^2+93.5x

http://www.wolframalpha.com/ - On Monday sarah had 7/10 of her classes , Tuesday 3/5, Wed. 9/11 and Thursday 1/2. Which day did she
*By*:-kathy

7/10,3/5,9/11,1/2

10,5,11,2 ;

lcm of the denominators =110

77/110,66/110,90/110,55/110

90/110 is the largest.

easier way is to convert to decimal

0 - How does "x^2-4x+4=49" come from "(x-2)^2=49"? Where does the "-4x" co
*By*:-Silver

( x - 2 ) ( x - 2 ) = 49

x² - 4x + 4 = 49

x² - 4x - 45 = 0

( x - 9 ) ( x + 5 ) = 0

x = 9 , x = - 5

9,-5

9,-5

- p is 9 more than half of q.?
*By*:-rocky john

p = (1/2)q + 9

q = 2(p - 9)

p = q/2 + 9

P = 9+ (q/2)

P = q/2 + 9

P = (1/2)q + 9

- whats the answer?
*By*:-hafsa

- What is the reference angle of 1,406 degrees?
*By*:-Jenny

First of all, subtract the biggest multiple of 360 degrees less than 1406:

1406 - 3 * 360 = 1406 - 1080 = 326; this is in the fourth quadrant.

The refere - 1 +10 x 2 =?
*By*:-George

1 + 20 = 21

21

always do the multiplication before the addition,

otherwise you end up with 22

21.

(1 + 10) x 2 = 22

- What is a word that starts with v?
*By*:-TardisAndTheHare

Just one answer please. - i need trig help?
*By*:-Accelerate

1. The height of the Statue of Liberty. while sailing toward the Statue of Liberty, a sailor and a boat observed that at a certain point the angle of deviation of the tip of the torch was 25 degrees. After sailing another 100 toward the statue, the angle - f(x) = 4 so [f(x+h)-f(x)]/h = 0. Why?
*By*:-PoopBeast

Hmmm... tricky!

f(x) = 4 means that regardless of the value x is, f(x) = 4.

..........so

..........f(x+h) = 4

..........f(x) = 4

therefore,

f(x+h - Find all real solutions of each of the following equation?
*By*:-rob

The cubic equation x^3 − 9x + 7 = 0 has three real solutions: x ≈ −3.332, x ≈ 0.845, and x ≈ 2.487.

sin^3(t) − 9 sin(t) + 7 = 0

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