Mathematics

Quadratics/straight lines question, need some help

The point A has co-ordinates (5,4) and the point B has co-ordinates (x,7-x). b) i) Expand (x-5)^2 Thats the easy part, but I dont know these two: ii) Show that AB^2= 2(x^2-8x+17). iii) The minimum

How much does it cost if i talk 316 mins for 7 cents per minute

Ans = 316 x 7 = 2212 cents= 22.12 dollar ?-A gazillion

Please help statistics problem.

A Gallup Poll conducted July 25, 2008 asked adults nationwide, Whats is your favorite summer Olympics even. Among 1007 adults surveyed, 27%said swimming, 18% said track, and 12% said gymnastics. ( th

Can someone help me with this probability question

3 balls are randomly selected from a bag containing 3 white balls and 5 black balls. A) how many ways are there to choose the 3 balls? B) how many ways are there to choose exactly 2 white balls? C)

Second order differential equation

y -4y +3y = 4e^3x, y(0) = 1 y(0) = 1-y - 4y + 3y = 4e^3x, y(0) = 1 y(0) = 1 complimentary solution y₁: ~~~~~~~~~~~~~~~~~~ r² - 4r + 3 = 0 r² - 3r - r + 3 = 0 r(r - 3) - 1(r - 3) = 0 r = 1,3 y₁ = C₁e^

Math help ? 10pts best answer

solve for m ? 4m+10=14-2m and could you explain how you got the answer plz cause i dont get how to do this. Thanka-okay so first: u wud get the ms on the one siide & the numbers on the other, the

Anyone good at business and money please help me answer the following question

Read the following extract: The banks chief economist Craig James said: An iPod Nano should broadly cost the same across the globe. If there were substantial price differences customers would switch

I need help with a math question involving Hooke's Law.

The distance d when a spring is stretched by a hanging object varies directly as the weight w of the object. If the distance is 39 cm when the weight is 4 kg, what is the distance when the weight is 7

How to solve this problem

let sin(t)=a,cos(t)=b, and tan(t)=c 5sin(-t)-sin(t)Simplify-sin(-a) =-sina -5sint-sint=-5a-a=-6a-sin(-t)=-sin(t) therefore 5sin(-t)-sin(t)=-6sin(t)=-6a sin(t) = sqrt(1-cos(t)^2) therefore 5sin(-

Using a cosine curve, where is the largest osculating circle found for 0 <= t <= pi

Curvature of circle with radius r: k = 1/r So the larger the circle (i.e. radius), then the smaller the curvature. We need to find point on curve where curvature is smallest (i.e. closest to 0) Curv

Show that for every positive integer n, 7 divides 3(to the power 2n+1) + 2(to the power n+2)

Working mod 7, 3^(2n+1) + 2^(n+2) = 3 * 9^n + 4 * 2^n = 3 * 2^n + 4 * 2^n = (3 + 4) * 2^n = 0. Hence, 7 | (3^(2n+1) + 2^(n+2)). ------------------------- Alternately, use Mathematical Induction. Bas

Imagine if £1 buys $1.95. If the £ fell in value by 20%, what would be the new exchange rate

Explain and tell me step-by-step.-£1 is worth $1.95. If it fell in value by 20%, i.e. by $0.39 (=0.20*1.95), it would be worth $1.56 (=1.95-0.39). Thats all there is to it!-Ratio of £ to $ = 1/1.95 .

PLEASE SOMEONE HELP ME WITH THESE 3 SIMPLE QUESTIONS..PLEASE PLEASE PLEASE. ALGEBRA 2.. ARITHMIC SERIES, ECT.

I really need help! I am struggling to make straight As & im in desperate need to figure out how to do this... so please please please take a little time out of your day to help me out.. I would reall

Calculus help - Find the sensitivity

If R denotes the reaction of the body to some stimulus of strength x , the \ sensitivity Sis defined to be the rate of change of the reaction with respect to x . A particular example is that when the

Were can I work on geometry online

I am looking for games and that or even give me questions I really want to pass my test on friday-This is a link to a geometry textbook where you can find online quizzes and extra help. It may not be