Mathematics

Solve for x. Algebra Help

1. 6(x+2) = 4 (x-5) 2. 4x-5 = 2x + 13 3. 2(x-3) + 3x = 14-you get one freebie, and then youll either have to do the rest yourelf (this would be best), or find another to help you. 1. rule number on

I need help with math question? xD (6th grade math question)

In round one of a phone tree, a person calls 4 people. In round 2, each person in round 1 calls 4 more people, and so on. How many calls will be made in round 4? a. 1,024 calls b. 512 calls c. 625 ca

How to simplify tan(cos^-1 x)

cos(arccos(x)) = x sec(t)^2 - tan(t)^2 = 1 Therefore: 1 / cos(t)^2-tan(t)^2 = 1 1 / cos(arccos(x))^2-tan(arccos(x))^2 = 1 1 / x^2-tan(arccos(x))^2 = 1 (1 - x^2) / x^2 = tan(arccos(x))^2 tan(arccos(

Write the following differential equation in separated form

(1 + 2^x) dy/dx = (4 + tan²y ) lnx anyone know how to? thanks so much-(1 + 2^x) dy/dx = (4 + tan²y ) lnx 1/ (4 + tan²y ) dy = ln(x)/(1 + 2^x) dx

Please answer this math problem? xD (6th grade math question)

lol im in 6th grade. Sonia buys a photograph album. Each page in the album holds 20 pictures. If Sonia has 319 pictures to put in the album, approximatley how many pages will she need? a. 14 pages

Integrate dx / x(2x^3 +1)^2

show steps please :)-Set u = x^3. Then du = 3x^2 dx. Then dx = du/3x^2. Then we get du/(3u(2u+1)^2) as the integrand. We then use partial fractions to solve this. Solving the linear equations gives:

I need help with a math question involving functions

If a bacteria population begins with 300 cells and doubles every 4 hrs, then the number of bacteria after t hours is n= f(t) = 300(2^t/4) (a) what is the inverse of this function and explain its mean

I need help with a math question? xD (6th grade math question)

Students at a junior high school, play a game called Pass It Along. In this game, one student picks a phrase and tells it to 3 other students. Each of these students then tells 3 more students. How ma

What do these inequalities solve to

-9 ≤ 4y - 3 ≤ 13 IcI ≥ 8 lxl ≤ -4 4r + 3 2--9 ≤ 4y - 3 ≤ 13 +3........+3.....+3 -6≤4y≤16 **...**...** 4....4....4 -3/2≤y≤4.................ANSWER IcI ≥ 8c>=+8..or..c lxl ≤ -4................

Need help with math, time distance problem converting....

The question is, An olympic athlete can run 110 yards in 10 seconds. How fast in miles per hour can the athlete run? It would be great if you could explain how you got the answer also. THANKS@!!!!-V =

What is 20% of 119,000

23,800! easy peasy lemon squeezy!!!dum dum-percent, %, means per hundred in Latin. so, 20% is 20/100 or 0.2 simply multiply ).2 by 119,000 and you get; 0.2 • 119,000 = 23,800 ░░░░░░░░░░░░░░░░-20 %

Weird polar coordinates question

I have a really weird question in my homework and have no idea how to answer it.I am not looking for an easy answer but I really need help..can someone please explain this to me??Thanks :) a)Determin

X and y equations help

Could someone show me step by step answers? For x: 3x-y=9 For y: 3(x+y)=2y+1-3x - y = 9for x: add y to both sides: 3x = 9 + y divide both sides by 3: x = (9 + y)/3 3(x + y) = 2y + 1for y: distribute:

Please help guys.....to answer this problem!

The de la Cruz family has P210 budgeted each month for electricity.They have a monthly base charge of P28 plus 7 centavo per kilowatt-hour.How many kilowatt-hours can they use each month to stay withi

Simplify (2/5x) - (x-4/5x)

I believe the answer is (-x+6/5x), but the signs always throw me off.-(2/5x)-(X-4)/5x =(2-x+4)/5x [by Lowest common multiple] = (-x+6)/5x so pls rate my ans..-2/5x -(x -4/5x)=2/5x-(x/1-4/5x)=2/5x -(