Mathematics

Pre calc equation help

A publisher is planning to procedure a new textbook. The fixed costs are $320,000 and the variable costs are $31.25 per book. The wholesale price will be $ 43.75 per book. How many books must the publ

Abstract Algebra: isomorphism

Show/ prove: (C, +) is isomorphic to (H, +) where H is a subset of M2(R) (2x2 matrices with real numbers) of the form [ a -bba]. My thought was to define a function f: C -> M2(R) by f(x) = [ cos(ø)

Problem solving please help me guys...!

A mold press can produce 1200 buttons an hour.another mold press can produce 1500 buttons an hour.they need to produce 45,000buttons. A) how long will be needed if both presses are used to run the jo

How to do this greatest integer equation

How do you this: [[3x/8]]=5 find x in terms of inequality.-5 ≤ 3x / 8 40 / 3 ≤ x

Help how would I construct a relative frequency distribution

Given that the following represents the number of live births in the US in 2005 for women 15 to 44 years old .....Age.....Live Births..... ....................15-19....414,406..… ...................20

Using limits to find the derivative

Im reading through and cant seem to figure out how to use the limit process here: f(x)= 4 / x^(1/2) lim (Δx -> 0) (f(x + Δx) - f(x)) / Δx ???-f(x) = 4 / x^(1/2) f(x + h) = 4 / (x + h)^(1/2) (f(x +

How to solve for X in an ln equation

[ ln (x) ]^2- 2ln (x) Thank you!-[ ln (x) ]^2- 2ln (x) ln^2(x) - 2ln(x) = 0 ln(x)[ln(x) - 2] = 0 ln(x) = 0 x = e^0 = 1 ln(x) - 2 = 0 ln(x) = 2 x = e^2-[ln (x) ]^2- 2ln (x) = 0 take out ln(x) as comm

How to simplify the following expression

g(x) = 4x^2 − 15x − 4 and h(x) = 5/(4-x) find (gh)(x) Thank You!-g(x) = 4x^2 − 15x − 4 h(x) = 5/(4-x) g(h(x)) g(5/(4-x)) 4(5/(4-x))^2 - 15(5/(4-x)) - 4 = 4((5)/(-x + 4))^2 - 15((5)/( -x + 4)) -

Calc 3 Lord of The Rings question

Gandalf the Grey started in the Forest of Mirkwood at a point with coordinates (-1, 3) and arrived in the Iron Hills at the point with coordinates (1, 6). If he began walking in the direction of the v

Find an equation parallel to y=-3/5x+14/5 and passing through (-5,4).

Parallel means the lines will have the same slope, which is -3/5. y=mx+b y=(-3/5)x+b 4=(-3/5)(5)+b 4=-3+b 4+3=b 7=b y=(-3/5)x+7

Can someone help me solve this

Find the value of a if a line containing the point (a,-3a) has a y-intercept of 7 and a slope of -2/3. Thanks!-two points: (a, - 3a) and (0, 7) slope = m = (7 + 3a)/(- a) = - 2/3 solve for a:3(7 +

Plz tell me if I solved this equation correctly!

solve for x: 8^(-x+4)=32 this is how I solved it: i set it to -x+4=ln(32)/ln(8) -x+4=1.66 -x=-2.33 x=2.33-Its not exact, but its close... the exact answer would be 7/3 EDIT: So it depends on your te

Help with math problems please

1.) In a photograph of a father and his daughter, the daughters height s 2.3 cm and the fathers height is 5.8cm. If the father is actually 188 cm tall, how tall is the daughter?--my answer is 74.55172

How do I go about doing this

how much would you have to save up for 7 days at miami,Hotel cost for the week and nightclubs ?-depends where you stay and what you plan on doing(site seeing, tours etc.) and if your flying. all that

Help with solving problems using two variables and equations

Please finish reading the whole details before you answer. Here is the problem i need help with: Mrs. Mabunga deposited Php 18,000 in two separate account -- a certain amount at 6% annual interest,