Best Answer

Unfortunately, the browser used by Answers.com for posting questions is incapable of accepting mathematical symbols. This means that we cannot see the mathematically critical parts of the question. We are, therefore unable to determine what exactly the question is about and so cannot give a proper answer to your question. Please edit your question to include words for symbols and any other relevant detail.

Q: What value of r makes 6r 2(r 2) 5 -20 true?

Write your answer...

Submit

Still have questions?

Continue Learning about Algebra

2r

2r + 7r - 6t - r + 7t = 8r + t

2r + 2s = 50 2r - s = 17 therefore 4r - 2s = 34 Add so that you can eliminate one of the variables: 2r + 2s = 50 4r - 2s = 34 ---------------- 6r + 0s = 84 Solve for r: 6r = 84 r = 14 Substitute r into one of the original equations: 2(14) + 2s = 50 28 + 2s = 50 2s = 22 s = 11 Doublecheck with the other original equation: 2(14) - 11 = 28 - 11 = 17

4r+4g

pi2r can be calculated, but is has no particular mathematical interpretation.

Related questions

The two equations you must know to solve this are The circumstance of a circle is the value of pi times the diameter c=pi*d -and- The radius of a circle is halve the diameter r=.5d or d=2r If we plug in 62.8 for c, 2r for d and 3.14 for pi, the equation becomes 62.8=3.14*2r Divide by 3.14 20=2r Divide by 2 10=r the radius is ten meters

If I rememember my geometry correctly, the circumference (C) of a circle is defined by the equation C=2r(pi), where r=the radius of the circle. So:13.4=2r(pi)13.4/pi = 2r divide each side of the equation by pi13.4/3.14 = 2r substitute the rough equivalent value of pi into the equation.divide to find the value of 2r.given that the diameter (d) of a circle = 2r, you have your answer.*** I'm sorry, but it HAS been a while since I've had to compute diameters and I DID originally have the wrong equation. The answer as currently written IS correct, however.

|2r + 9| = 5 So 2r + 9 = 5 or 2r + 9 = -5 so that 2r = -4 or 2r = -14 r = -2 or r = -7

12-2r = 10

4r2-25 = (2r)2-52 = (2r-5)(2r+5)

2r-1=9 2r =10 r =5

11

2r + 5 - - 1 When simplified: 2r + 6

2r

Depends on condition. Anywhere from $350 to over $1000.

If: 7 -2r = 13 Then: r = -3

If: -7 = 7-2r Then: r = 7