Mathematics

2(40x-10)+45-15=3(25x+15)-5

5 mins lng..kya?-2(40x-10)+45-15=3(25x+15)-5 80 x - 20 + 30 = 75 x + 45 - 5 80 x + 10 = 75 x + 40 80 x - 75 x = 40 - 10 5 x = 30 x = 6-2(40x-10)+45-15=3(25x+15)-5. 80x-20+45-15=75x+45-5. 5x+10=40. 5x=

What is my grade if I have 355 out of 430 points

Divide 355 by 430, then times it by 100 to get the percentage. 355/430 = .83 .83 x 100 = 83% You can do the same thing with all grades to figure out your percentage.Points earned divided by points

What is the volume of a standard CD

i want the mathematical water volume, not disk capacity in case your wondering. thanks!-15mm Internal diameter, 120mm external diameter, 1.1 mm thick A = Pir^2 A = Pi60^2 A = 3600Pi A = Pi7.5^2 A =

Probability Question!! Math Exam TMRW?!

The probability of event A occurring is P(A)=13/25. The probability of event B occurring is P(B)=9/25. The conditional probability of A occurring given that B has occurred is P(A/B)=5/9. Determine P(

If they give you the inverse of a matrix...

If they give you M^-1 and ask you to find M, how do you do that?-Treat M^-1 like any other square matrix and find its inverse. M = (M^-1)^-1

Taylor Series: What is the value of this

The Taylor Polynomial of degree 100 for the function f about x = 3 is given by P(x) = (x-3)^2 - ((x-3)^4)/2! + ((x-3)^6)/3! + ... + (-1)^(n+1) * ((x-3)^2n)/n! + .. - ((x-3)^100)/50!. What is the value

I need to factor x^2-8x+66

But I cant find two numbers that multiply to get 66 and added to get 8.UGG!!-x^2 - 8*x + 66 is prime!

What is the probability that you drew a red then a blue

Begin with a box of marbles that contains 2 red, 3 blue, 4 green, and 3 yellow marbles. A first marble is drawn and replaced then a 2nd marble is drawn. What is the probability that you drew a red the

Tan^2x+3=0 for Trigonometry? Someone please help!

Okay so I need to find the exact solution over the interval [0,2pi) for inverse circular functions and trigonometric equations, why is the answer no solution, how come 300 degrees or 5pi/3 doesnt work

Percents.....math help?

a marathon had 618 runners register in it. of these runners about 0.8% completed the race in under 2h 15min. how may runners completed the race in this time? Please write down how you solved this THA

What is √(14)+√(2/7) simplfied

Please leave in radical form. Help is greatly appreciated.-√(14)+√(2/7) Rationalize the denominators: =[√(14√7)/√7]*(√(7)/√(7) + √(2/7)*(√(7)/√(7) = [√(14√7√7]/(√7/√7) + √(2√7)*(√7/√7) =√[(14)*

Solve the expression (4+2i√3)˄2

and solve the equation if u want√3x+1=7 with 3x+1 being inside the square root. Thanks I appreciate your help :)-16 + 16i^2(3) + 4i^2(3) 16 - 48 - 12 -44

Word problems for algebra

I am lost can someone help me out. One number is four more than another.The product of the numbers is 4 more than the smaller. Find the two numbers.-Smaller number = x Larger number = x + 4 x(x + 4

What is the probability of selling a tiger cap

A zoo store sells caps with different animals pictured on the cap. The table shows the animals pictured on the last 100 caps sold. The manager plans to order 1500 new caps. What is the probability of

Find the derivative r '(t) of the vector function r(t). !!!! Please help me..im running out of time :/

(t* cos (5t) , t^2, t* sin (2t) ) find r(t)...there should be 3 separate answers-Just differentiate r(t) component-by-component. You can calculate the derivative of t*cos(5t), t^2, and t*sin(2t), rig