04/04/14

how much 40 degree water will it take to cool 100gallons of 120 degree water to 100degrees

I want to find the ratio of cold water to hot water I need to make 100 degree water for a nursing home I have a 100 gallon tank and I need to cool it from 120 to 100 degree and the water i'm adding... more

04/04/14

How do you find the x intercepts and y intercepts of a circle with a given circle besides graphing?

The circle is not in the formula already. The equation is x^2+y^2+4x-6y+4=0 Also I am not sure whether I should complete the square or not.

04/04/14

B invested some money at 9% simple interest, and $25,000 more than twice.................

B invested some money at 9% simple interest, and $25,000 more than twice the amount at 11%.  The total annual interest earned from the investment was $31,580.  How much did he invest at each amount?

04/04/14

if the area of a cirle is 804 what is the radius

The circle has an area of 256π what is the radius and diameter?  

04/04/14

Help with this Math question?

 A cylinder and a rectangular prism have the same volume and same height. The base of the prism is a square with side length 7 cm. What is the approximate radius of the cylinder? A. 4.0 cm B. 3.5... more

04/04/14

f(x)=-5x^2+9x+9

select the x coordinate of the vertex of the parabola defined by the function f(x) =-5x^2+9x+9

04/04/14

Determine the size of the sample space

An experiment consists of choosing a subset from a fixed number of objects where the arrangement of the chosen objects is not important. Determine the size of the sample space when you choose the... more

04/04/14

Find the value of the permutation

Find the value of the permutation P(9,3)=

04/04/14

Find the value of the combination

Find the value of the combination C(8,2)=

(1 pt) How many 4-digit numbers can be formed using the digits 0 and 1?

How many 4-digit numbers can be formed using the digits 0 and 1? Repeated digits are allowed.

How many ways are there to form a committee with 6 members if it must have strictly more women than men?

Suppose that a department contains 8 men and 16 women. How many ways are there to form a committee with 6 members if it must have strictly more women than men?

04/04/14

(-9x^3+3x^2-15x)/(-3x)

i am having problems solving this and need help

04/04/14

Graph the polar equation using Geogebra

1)r=-pi/4     2)r=2(1-sin theta)         Hellllpppp please

Valerie makes a bike ramp in the shape of a right triangle. The base of the ramp is 4 in. more than twice its height, look below for more details

The length of the incline is 4 in. less than three times its height. How high is the ramp?

04/04/14

Fraction help

A cook needs 12 lb of flour. He wants to spend the least amount of money. If a 2lb bag cost $1.59 and a 5lb bag cost 2.89 how many bags of each type of flou should he buy?

indefinite integral of (tan^2(x))^1/3sec^2(x)dx

Find the indefinite integral and simplify your result. Please show step-by-step result.

04/03/14

I have a base of 50 and a hypoteneuse of 130 how do i solve for b

pythagorean therom I have a base of 50 + ahypoteneuse of 130 how do I solve for the other side

mean value theorem

find the value(s) of c that satisfy the mean value theorem for the given function and interval.   f'(x)= √(x-3)   [3,8]

04/03/14

Point slope form slope = 5 passing through (-3,4)

I don't know how to do this at all

04/03/14

Y = -1/2x+4 and y =2x-2

This is parallel? 

04/03/14

100xyz - 75xy

Factor completely

4z + (-5z)

rewrite using the distributive  property  

04/03/14

is y = 3x+8 and y = -3x+4 parallel perpendicular or niether

I haven't done these equations since my 8th grade year and I'm just trying to refresh my memory.lol and I need some help.

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