Mathematics

Stuck on a radical problem

Hi yahoo answers community xDDD Im doing test corrections in math and theres this problem I cant seem to figure out. It says: Simplify. Assume that the given variables represent real numbers. If th

What would my grade in history be

Im trying to figure out what my grade would be in my history class if I have: Tests and Assessments Average: D (63.875/105.0) Classwork and Homework Average: A (473/473) The Tests category is weig

Help with a few math questions

I need help with a few math questions i need to do to. I need to simplify 3x-2x² + 4x +7x² and simplify 3(4x-7) i also have to solve 2x+3=19 Any help would be appreciated :)-1. (3x+4x)+(-2

Solve this system using whichever method

y = x - 3 y = 7x + 3-7x + 3 = x - 3 6x = - 6 x = - 1 y = - 7 + 3 y = - 4 x = - 1 , y = - 4-Thank you----pleased to help.Report Abuse-x-3=7x+3 -6x=6 x=-1 Y=x-3 Y=-1-3 y=-4

Math Question (10 points)

How many 6-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 if the first digit cannot be 0? Repeated digits are allowed.-Using the fundamental counting principle / basic p

How to Simplify tan (pi/2 - pi/11)

How do you simplify tan (pi/2 - pi/11)? I got 9pi/22 but my math hw online says its not correct, help please? I think I might be missing a step. And no calculator use! Simplify to most you can without

In this equation so I use distributive or...

Do I solve with distributive property?? Or should I do (17-13) THEN multiply 4 by 4??? 3 + 81 / 4(17-13) - 9 - 3-17 - 13 first, multiply by 4, then divide 81 by that answer and follow through.

Solve each system by elimination and determine how many solutions the system has

Solve each System by Elimination and determine how many solutions the system has; i.e. (one solution, no solution, infinite many solutions) Pleas show work, thank you! 16.) 16x + 14y = -148x + 7y = -

Can anyone solve these by elimination or substitution

4x-3y=8 y=4(x+2) 4x-3y=1 3x-y=-2 3x=-6y+3 2y=-x+1 -CAN SOMEONE PLEASE SHOW ME HOW YOU COULD SOLVE THESE BY ELIMINATION OR SUBSTITUTION? Please and thank you.-4x-3y=8y=4(x+2)=4x+8sub. y=4x+8 into

When the question is this

Use the formula pH = - log [H+] to find the pH of fresh coffee whose hydrogen ion is 1.3 x 10^-5 moles per liter. Round to one decimal place. How do I solve? Please give detail.-use the log function

What would my grade in my class be

Im trying to figure out what my grade would be in my history class if I have: Tests and Assessments Average: D (63.875/105.0) Classwork and Homework Average: A (473/473) The Tests category is weig

Verify Stokes' theorem

Verify Stokes Theorem for the vector field F= and the cylinder x^2+y^2=9 for 1≤ z ≤2oriented out. Both integrals should equal 54π.-(i) Surface integral. Since curl F = , and a parameterization of t

Derivatives of functions and limits, please help!

If f is a differentiable function and f is continuous with f(2)=0 and f(2)=7, find: lim x->0 (f(2+3x)+f(2+5x))/x http://imageshack.us/photo/my-images/808/picture4whx.png/ What does it mean for f t

Solve x²-8x+12=0, d²-21d=0 & x²+3x=-2

x²-8x+12=0 d²-21d=0 x²+3x=-2 And please explain, thanks :}-x²-8x+12=0 we factorise to solve , (x - 6 )(x-2) = 0which means that x-6 = 0 and x-2 = 0... so x = 6 and x = 2 d²-21d=0 = d²= 21ddivid

Can 3x^2 + x - 56 Be broken down further

Learning Trinomials in Math-no , but if it was 3x² + 2x - 56 then it would be (3x+ 14)(x - 3)