C=35n + 1/2 x n^2. Will C be doubled if n is doubled?

How to proove without using substitution?
in Word Problem Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Let C₁=35n+n²/2=n(35+n), and C₂=2n(35+2n).

C₂/C₁=2n(35+2n)/(n(35+n))=2(35+2n)/(35+n).

35+2n=35+n+n, divided by 35+n is 1+n/(35+n).

So C₂/C₁=2+2n/(35+n).

Therefore C₂ is not twice C₁ (unless n was zero). If n=-35, C₂ is infinitely more than C₁.

by Top Rated User (1.1m points)

Related questions

1 answer
if w=140 when d =4 2/3 and L=54 find d in terms of W and L
asked Feb 17, 2014 in Other Math Topics by Popeniyi Level 1 User (120 points) | 630 views
1 answer
if x varies directly as y, and x=30 when y=6, finx x when y=7
asked Jul 2, 2013 in Algebra 1 Answers by anonymous | 828 views
1 answer
y varies directly to x. If y = 9 and x = 24, find x for y = 25.
asked Apr 12, 2013 in Algebra 2 Answers by anonymous | 1.3k views
1 answer
if 1/x + 1/y varies as 1/x+y then prove that x varies as y
asked Feb 4, 2013 in Algebra 1 Answers by anonymous | 7.2k views
1 answer
What's the answer
asked Oct 14, 2013 in Word Problem Answers by anonymous | 483 views
1 answer
solve for K. 147=K/3960squared
asked Oct 7, 2013 in Algebra 2 Answers by anonymous | 510 views
1 answer
y varies directly with x and y=10 when x=2
asked Feb 14, 2013 in Algebra 1 Answers by anonymous | 1.0k views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. complete the following. 825 use each digit once .make the two smallest 3 digit numbers and two largest 3-digit number (2)
  4. Solve 15 -1(12÷4+1)? (4)
  5. 8:4(5+2) (3)

Most popular tags

87,542 questions
99,771 answers
2,417 comments
506,015 users