Mathematics

Need desperate help in math please help! (Pre-Cal)

1) I need to simplify this expression (1 - sin^2x)/(sin(x) - csc(x)) 2) In how many ways can you answer the questions on an exam that consists of 18 true-false questions please show all steps and

What is the rate of depreciation

I have two questions about rate of depreciation? I dont understand how this works... Here are my questions. A boat is worth $10,000 when it is 5 years old and $4,000 when it is 8 years old. What is t

How do you solve this algebra problem

Rewrite in a single logarithm. log gh+2log hk -4log gk help me please? I dont know where to start-The formula you need are: a log b = log b^a log a + log b= log ab log a - log b= log a/b So: log(g

Yr 11 math help on linear equations

given point a and point b have the coordinates of (-3,5) and (5,1) find the equation of the line that passes through the midpoint in part b and is perpendicular to the line joining points A&B from the

How do you solve this (maths algebra)

4x+1 ------- 2 = 35 (sorry for my annoying setting out but i didnt want the fraction confused with division... but i guess they are the same anyway *shrugs*) i was doing it like this 4x+1 ------= (3+

How do I work out the values of a and b, when x2 – ax + 144 ≡ (x – b)2

(x - b)² = x² - 2bx + b² thereforea = 2b and 144 = b² b = 12 or -12a = 24 or -24 thus x² - 24x + 144 = (x - 12)²and x² + 24x + 144 = (x + 12)²

How do I integrate (x-1)/(16+x^2)

note:split into two integrals, and use substitution on the first)-yeah, it seems like you DO know how to integrate this one your 2 integrals are: ∫ x / 16 + x^2 dx - ∫ 1 / 16 + x^2 dx for the first

Need help with an algebra problem.

Part of the proceeds from a garage sale was $340 worth of $10 and $20 bills. If there were 4 more $10 bills than $20 bills, find the number of each denomination.-let $20 denomination be x, denominatio

Simplify: (x-3) x + (4-X) 2x

Could you simplify this and show your work? Thank you-(x-3) x + (4-x) 2x Distribute your x and 2x first x2 - 3x + 8x - 2x2 Add and subtract like terms (x2 - 2x2 & -3x + 8x) Answer -x2 +5x P.s. t

Simplify: 2m(m+n) - m(m+2n)

Could you simplify this and show your work? Thank you-2m^2 + 2mn - m^2 -2mn m^2 + (0) =m^2

I'm havin' some trouble with the following math problems:

1) One car travels 20 miles per hour faster than another.In the same time that one car travels 225 miles, the other travels 325 miles. Find the speed of the slower car. 2) With a wind behind it, a pla

Maths question please

5x+3y=7 and you have to make y the subject of the formula thank you:)-3y=7-5x y=7/3-5/3x@=(7-5x)/3-5x + 3y = 7..........write out original -5x..........-5x........subtract 5x from each side to get y o

Math problem. Need help. please

If x, x+3, and y are the lengths of the sides of a triangle, then (blank) -u can use the triangular inequalities to solve the problem. one is, sum of two sides is greater than the the third side.

I hate problem solving!!! pls help!

1. The OfficeJet printer can copy Janets dissertation in 20 mins. The LaserJet printer can copy the same document in 8 mins. If the two machines work together, how long would they take to copy the dis

Three more problem solving pls!

Who ever has the right answer gets the best answer with lots of points! lols, 1. The ratio of the weight of an object on Mars to the weight of an object on Earth is 0.4 to 1. a) How much will a 16 t