Mathematics

Add: (x^3+x^2 ) + (2x^3-5x^2)

please show steps...-(x^3+x^2 ) + (2x^3-5x^2) = ( x³+x² ) + ( 2x³-5x² ) = x³ + x² + 2x³ - 5x² = x³ + 2x³ + x² - 5x² = 3x³ - 4x² Thank you-(x^3+x^2 ) + (2x^3-5x^2) => x^3+x^2 + 2x^3 -5x^2 => 3x^

Math question: If 3x-y=45 and 3y/4= 9, what does x equal

If 3x-y=45 and 3y/4= 9, what does x equal? If you can please explain how you got this problem. Thanx!!-3y = 36 y = 12 3x = 45 + 12 = 57 x = 19-You are welcome, thanks and regards.Report Abuse

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i tried! In 2000, the population of Town A was 9,400 and the population of Town B was 7,600. Since then, each year the population of Town A has decreased by 100 and the population of Town B has incr

Where can I take an algebra class for free

I am in College...but I am done with math. But this is purely for my own benefit since I always sucked at math. I do not mind taking a class just to redo the work at my own pace and learn something th

Why is not possible? It can prove that IT WORKS.

I can prove from x-3=0, that x=0 & 3. Multiply both sides by x to get x^2-3x=0 x=0-Whenever you multiply both sides of an equation by x, you are introducing x = 0 as a solution to the equation, beca

Please help! 3 Multiple Choice math questions!

Estimate each answer. Then tell which answer choice(s) you can eliminate. (Please give 6th grade answers) 1. What value is closest to the area of a circle with a 3-inch radius? A. 9 square inches B.

Is this radical simplified

3 - 3√5 ------------(Division line) √ 5 So its: 3 minus 3 square roots of 5 all over the square root of 5. If not, what do I do to simplify it? Thanks.-no. You cant have a radical at the denominator

If x is 11*1/9 percent more than y, then y is what percent less than x

help mee-The same percent. 11*1//9

Please help with calculus? (basic)

2. parametric equations of a line are x=1 + 3t and y=5-2t, teR. Write the coordinates of three points on this line. I really tried to read the examples but it doesnt really have a step by step proces

Calculus Questions - Integrals and 3D Objects

You dont have to do the problem, but I just want to know how you would at least set these problems up. 1) A particle moves along a line with a velocity function v(t) = (v^2) - t, where v is measured

Math Problems Help Help Help

I want to see if someone answers these. THIS IS SO SIMPLE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!… AND SO EASY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!… Its ok if you tell me do it yourself, Bob. I dont mind.

Do you switch the Direction of the < sign when you multiply,divide or both or neither by a negative number

like in something like this-3x -3? and could you give me one more easy example of some other situations-Whenever you multiply/divide a side of an inequality by a negative number flip the sign. Ex. -

What is the differance between a monomial binomial trinomial and a polynomial

and which is this equation 15x^4 - 6w^3 + 4w + 3y^5 - 4-monomial is 1 term binomial is 2 terms trinomial is 3 terms polynomial is 4+ terms That is a polynomial (5 terms)-A polynomial can have fewe

Parametric to Cartesian equation:

Parametric is: x=-10-2sand y=8+s Please be thorough, thanks for your help :)-To make learning math a bit easier, Dr. Pan (TucsonMathDoc) has recorded a YouTube video to help visually answer your ques

What is the probability of rejecting? (STATISTICS)

the problem asks what is the probability of accepting and rejecting a shipment, for accepting i got 0.4912. would the probability of rejecting be 1-0.4912? thank you. if you wanted to know the entire