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PLEASE HELP ON THESE ALGEBRA PROBLEMS!!

1 . Nine more than four times a number is the same as one less than twice the number. Find the number. 2. Eighty, decreased by three times a number, is the same as five times the number, increased by

Algebra problem - simple but needs working

This problem can be solved intuitively. But how do you show it using just algebra? Can anyone answer this with all working ONLY algebraically? A square photo has a border 5 cm wide. The photo area

Can you convert these degrees to pi radians

514 degrees pls-514 * PI/180 radian = 2.86 PI radian (to 2 decimal places) Note: It comes 2.85555.......... I rounded it to 2.86-180 degrees = pi radians 514 degrees = (pi/180)*(514) radians= 2.85555

Maths investment in apartment

Mr lucas wants to purchase an apartment as a form of investment. The apartment is advertised at $900 000. Stamp duties and legal fees are charged at 2% and 1% respectively based on the transacted pric

Math homework help with collinear points

Given collinear points A, B, and C with A between B and C, find the distance BC if BA= x-2, CA= 5x+7, and CB= 4x+37-C................A.....................B |BC = x-2 + 5x+7= 4x+37 6x-4x= 37+2-7 2x

If I have a grade of 70% and the final is worth 30%

this is worst case scenario as teacher hasnt updated grades yet.Am I still able to get a b in this class? Lets say I get a 100 on the final...I dont know how to calculate this stuff. help please?-If y

What to do with the exponent

(3x)²(5y)= This is beyond me and how can this be applied in a life situation?-as stated: (3x)² (5y) = (9x²)(5y) = 45x²y ===================== if the exponent were on the inside of the parentheses wi

Calculus easy 10 points

Show that y=1/x is concave up for x>0 and concave down for x-y = (1/x) = (-1/x ²) = 2/x³ for x = -1 ==>y(-1) = - 2 from -∞ to 0 concave down x = 1====> y(1) = 2 >0 ===> concave up-y = x^-1 y= dy/

How would i do this problem

In math i have this problem in algebra. It says erica works at a soda bottlin factory. She gets 4 cents for each one she bottles and deduct 2 cents for each bottle she breaks. One day she has a bad da

Show that if a and b are positive integers and a^3 | b^3, then a | b

If youre allowed to use prime factorisation then its fairly easy: Let: b = p1^b1 * p2^b2 * ... * pn^bn a = p1^a1 * p2^a2 * ... * pn^an where p1.. pn are primes, a1... an and b1...bn are non negative

Number Theory Help: Prove 5^(1/3) is irrational.

Yes indeed -- the standard proof of the fact that 2^(1/2) can be mimicked to obtain this result. Suppose that 5^(1/3) is rational: thus, we may write 5^(1/3) = p/q, where gcd(p, q) = 1. Then 5 = (p^3

Math help please!!!! 10 points!!!!!!

Solve this system of equations by graphing. I am aware that you cannot show me the graph....I just need help solving the equations, to get the points to plot on the graph. Thanks in advance!!Details w

Solve this simple first order differential equation

dy/dx + 2y =8 This is straight forward and driving me crazy. Please include detail. Thanks-dy/dx = 8 - 2y dy/dx = -2 (y - 4) 1/(y-4) dy = -2 dx Integrate both sides: ∫ 1/(y-4) dy = ∫ -2 dx ln|y-4| =

Help with trig identity problems

i am so stuck on these problems. any help would be much appreciated. even just helping me figure out how to get started and get through some of the harder stuff would be great. i just hate these and i

Stuck on simplifying this problem

8x^3 - 6x^2 - x + 15 Over 2x - 3 The answer i get is 4x^2 + 3x + 4 + 35/2x - 3 not sure if its right And i need help with 8+y/y^2 + 2-3y/y-Ive written out the problems and taken pictures of the
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