Mathematics

The graph of the line through (2, 3) that is perpendicular to the line with equation x = -1 also goes through

which point? a. (0, -1) b. (-2, 3) c. (2, -4) d. (1, 4)-x = -1 is parallel to the y axis, hence the line perpendicular to it is parallel to the x axis and therefore has equation y = constant. Since i

Easy?? Math Question

What is the name of the relationship between two quantities that vary togather over a period of time? A.Prediction B.Regression C.Liquidation D.Correlation-D.Correlation-D. Correlation

What is the derivative of the function y = tan^-1 (x lnx)

The derivative of arctan(x) = 1 / (1 + x^2).Using the chain rule, this needs to be multiplied by the derivative of (x ln(x)) as follows: (1 / (1 + x^2)) [x(1/x) + ln(x))] = (1 + ln(x)) / (1 + x^2) -d

Help with 8th grade math homework please

I have 8th grade math homework(even though Im in 6th grade. Im in honors math). Im kinda confused on some problems. Im not asking for answers, I just want some homework help. Thanks! Use integers to

Can you help me, i'm confused about exponents

i just read that 4^-2is the same as 1/4^2.but i noticed that 4^2-4^4= -12,which does not = 1/4^2.How can this be?I thought that 4^2 - 4^4=4^-2-No , the true statement is :4^2 / 4^4 = 4^-2 when they

What did I do wrong, check my working, please

Sorry I keep posting questions. Financial maths is hard. A kitchen cupboard manufacturer is talking to a satisfied consumer. The consumer says he got a very good deal from the retailer, because he pa

100grams of a certain element has decayed to 50 grams in 5 years.Find to the nearest integer the rate of decay

100 grams of a certain element has decayed to 50 grams in 5 years. Find, to the nearest integer, the rate of decay. Please show me how to solve this Best answer gets ten points!!!!-fraction remaining

Can u slove these equations? 10PTS!!!

what is equivalent to (5x+1) (3x+5) the square root of (2x-5)to the 2nd power=13 Where does the graph of f(x)= xto the 2nd power+5x- 14 cross the x-axis what are the roots to the equation? xto the 2

Factor the following expression

3x^(3/2) - 9x^(1/2) + 6x^(-1/2)-= 3x^(-1/2)(x^2-3x+2) =3x^(-1/2)(x-2)(x-1)-When you factor, like 4x^3-7x^2, you factor out the smallest power of x that is shared. So when there are negative exponents,

Simplify exp[i pi sin(1/i ln(i))]

I know the answer is -1 but im not too sure how to get there? image of it in natural form>http://imageshack.us/photo/my-images/195/picfd.png/-exp [iπ sin((1/i) log i)] = exp [iπ sin((1/i) (ln |i| + i

Probability question help

-------------Democrat------Republican---… Male------------36--------------45----… Female--------48---------------33-----… determine the probability that a randomly chosen person from this poll is a r

I need help with math: I have to find the surface area of a rectangular box that has the numbers 2,5, and 8...

HELP!!! It is due in two days, please, please, please!!!!!-The surface area of a rectangular prism is the area of the six rectangles that cover it. But we dont have to figure out all six because we kn

Can someone help me to do this mathematic homework

Given that α and β are the roots of (2m-1)x^2 + (1+m)x+1=0, find m if: a. α = β b.α= 1/β c. α = 2 d. α + β = 2αβ-x = [-m - 1 ± √((m + 1)² - 4(2m - 1))] / [2(2m - 1)] x = [-m - 1 ± √(m² + 2m + 1 - 8m +

Prove that the limit does not exist (calculus)

I must have missed this in class. How do I show that this limit does not exist? lim(x->2)|x^2-4|/(x-2)-|x² - 4| is a piecewise function, defined by where its inside changes signs. (x + 2)(x - 2) = 0

Determine the intervals over which the function is increasing, decreasing, or constant.

f(x) = x- 3x Okay, so I get a line with one slope and its decreasing...The correct answer is: Decreasing: (-8, 1.5)Increasing: (1.5, 8) HOW is that possible?? Lol.Please I need your help here becaus