Mathematics

What is the probability of...

How many 3-digit positive integers are odd and do not contain the digit “5”?-The lowest 3-digit number is 100, since if the first digit were 0, it would only be 2-digits. Now think of the number as th

X^4+y^4=53 and 2x^3y+3x^2y^2+2xy^3=14 find x+y

choices A)2 B)3 C)4 D)5 E)6-Wow! Thats pretty crazy-looking, isnt it? OK, heres the trick. Its recalling that (x + y)^4 = x^4 + 4x^3 y + 6x^2 y^2 + 4xy^3 + y^4 and that thats just (x^4 + y^4) + 2(2x

How to answer these math question

The annual cost of owning a car varies partially as the distance driven. The cost is $3700 for 10 000 km, and $7450 for 25 000km. 1)What is the fixed cost of owning a car? 2)Determine the equation

What shape does the intersection of 2 spheres make

i know its a circle, but why is it circle.. isnt it just a weird () shape? can you please explain and thank you-It could also actually be a point or a sphere (if they are concentric spheres with the s

Math question on rate of change

Driving to their cottage, the Smiths travelled 85km in the first hour. After 3 hours of continuous driving they completed the trip, having travelled a total distance of 276km. Determine the average

Please tell me : What is 10 + 10 x 0

I need to know.-10+10=20x0=0 any thing times zero is zero-Because of Order of Operations, you multiply first 10 x 0 = 0, then add 10+0=10-0. Any number when multiplied by 0 is 0.-If we are going math

Evaluate the limit [[2x - x²]] / [[2 - x]] as x→2⁺

limit [[2x - x²]] / [[2 - x]] x→2⁺ My answer sheet says the following: x > 2 2-x therefore [[2 - x]] = -1 2x-x^2 x(2-x) = approximate 0 (>2)( [[2x - x^2]] = -1 so [[2x-x^2]]/[[2-x]] = (-1/-1) =

Please help me solve these math problems!

1. What interest rate, if compounded continuously, is needed for an investment to double in 7 years? (I know the formula for interest compounded continuously is Pe^rt but I dont see how I could do thi

Find the value of c in the equation 2^c + 2^c = 256.

Please provide steps, having a bit of trouble.-There are two 2^c terms in this equation so you could rewrite this like 2*(2^c) = 256 Since the bases are the same you can rewrite it under one exponen

When 6x^3-7x^2+1=0 whats the value of (2x+1)/x^2

i have choices. A)1 B)2 C)3 D)4 E)5 i also found that 6x^3-7x^2+1 polynomial equals to (3x+1)*(2x-1)*(x-1) When i use -1/3 and 1 for x i get 3 in the second division but when i use 1/2 for x i get 8

Finding specific sectors

The problem is in this link: http://imageshack.us/photo/my-images/26/capturetfb.jpg/ The goal is to find the shaded area. First i go about finding the height of both triangles (APQ and BQP). Then i

Simplify the following complex fraction.

(5/x + 5/y) / (4/y^2- 2/x) Thanks so much!-... (5/x + 5/y) / (4/y^2- 2/x) or [ (5y + 5x) / (xy) ]/ [ (4x - 2y^2) / (xy^2) ] or [ (5y + 5x) / (xy) ]* [ (xy^2) / (4x - 2y^2)] or [ 5 (y + x) (xy^2) ] /

Euler's Method, y'=-3x+y^2, y(0)=0, find y(1)

Use Eulers method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial value problem y=-3x+y^2, y(0)=0. y(1)=____ My attempt: y_1=y_0+hf(x_0,y_0) y_1=0+0.2(-3(0)+(0)^2)=0 y

Maclaurin series?! Calc!

Please find the Maclaurin series for the following functions 3/(1-2x) 1/(1+x)^3 Thank you!-Maclaurin Series for f(x) f(x) = Sum from n = 0 to INF {f^n (0) (x^n) / n!} where f^n (0) is the n-th deri

What is the degree of (4x^3-8x^2-7)

a. 4 b. 3 c. 2 d. 1 Im completely stuck here (again), please answer the question and tell me how you got the answer! Thank you -three. the highest exponent is three. So the degree of this equation is