Mathematics

Solving log/ln/e equations

log2 (5x^2 - 8x) = 2 (log base 2)-5x^2 - 8x = 2^2 = 4 5x^2 - 8x - 4 = 0 (5x+2)(x-2) = 0 x = -2/5 and x = 2-(5x^2-8x)=2^2 (5x+2)(x-2)=0 x=2 and -2/5

Complicated math probability problem! 10 points

If each person randomly gets a number between 1 and 10 then how many many people do you need together for there to be more than a 50 percent chance for two of them to have the same number. Show how y

If the area=14 pi cm squared, find circumference and diameter in terms of pi

Hi Sam Fisha, formula for area is pi r^2 Given pi r^2 = 14 pi cm^2 So cancelling pi on both sides, we get r^2 = 14 So r = ./14 cm Now circumference C = 2 pi r = 2./14 pi cm Diameter = 2 radius = 2./1

Help with a math question

I need help with this math question, If I have to sow 78 pants, and I have 3 helpers, And I finish 12 pants in 3 days, How many days would it take to sow all the pants? I know its easy, but i just do

How old would am I in fortnights

Im 15 years old. My birthday is May 29th. If you include leap years, how old am I in fortnights.-Well a fortnight is just two weeks. So... In weeks, you are 794.9 weeks old. Cut that in half and you g

96 is 30% of what number

96 is 30% of what number? please include a thorough explanation for top points. Thanks. :)-You are looking for the answer of a simple algebra equation. N x 0.30=96, where N is the number you want to f

Find the particular solution of the differential equation...

Find the particular solution of the differential equation dy/dx + 2y = 6 satisfying the initial condition y(0) = 0 Help please! Thanks.-dy/dx + 2y = 6 dy/dx = (6 - 2y) dy/(6 - 2y) = dx Integrating

Does 7/20=20%???? Math:Changing fraction to percent

7/20 is 35%. To find a percent equivalent of a fraction, do the division (7 divided by 20, for example) and multiply the result by 100%-No. 7/20 = .35 if you want a percent multiply result by 100

Integral of (sin^2x)/root(1-cosx)

∫(sin²(x))/√(1 - cos(x)) dx ∫(1 - cos²(x))/√(1 - cos(x)) dx ∫(1 + cos(x))√(1 - cos(x)) dx Recall that sin²(x/2) = (1 - cos(x))/2 and that cos²(x/2) = (1 + cos(x))/2 ∫(2*cos²(x/2))*(√2*sin(x/2)) dx

Homework help? please. thanks so much!♥

I dont understand how to do these can someone please help? thanks 5.6 x 1018 * 7.4 x 1020 = ? 2.0 x 1010 /4.0 x 109 = ? 7.6 x 1023 + 4.4 x 1021 = ?-Homework help? please. thanks so much!♥? I dont unde

HELP?? (-8m²n3)(-9a²mx4)

PLEASE help me with Algebraa!! *The letter n is to the 3rd power and x to the 4th power* It would be great if you explained in steps-(-8m²n3)(-9a²mx4)// -8x-9 = +72 then: multiply alikes (add the pow

Find the solution to the differential equation...

Find the solution to the differential equation dy/dt = y^2(7 + t), y=8 when t=1. What is y? Any help is appreciated! Thank you!-Separate variables, integrate both sides, then use the fact that y = 8 w

Rational function math problem

For what values of x is (x+4)/(x+1) I have no clue how to solve this. Btw the answer is supposed to be x-rewrite the equation as: (x+4)/(x+1) - (x-2)/(x-4) [(x+4)(x-4)] / [(x+1)(x-4)] - [(x-2)(x+

If the area of a circle whose diameter is π, is written as aπ^b, what is the value of ab

the ^ means to the power of b-area=(pi/2)^2 x pi=(pi^3) / 4=api^b a=1/4 ,b=3 God bless you.

Solve the differential equation...

Solve the differential equation dR/dx = a ( R^2 + 16 ). Assume a is a non-zero constant, and use C for any constant of integration that you may have in your answer. Any help would be greatly appreciat