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Earn +20 ptsQ: What do you times to -2r to get -13?
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Continue Learning about Math & Arithmetic
What does the diameter of a circle equal?
2R or two times the radius.
Formula for diameter?
d=2r diameter=2 times the radius
What is the formula for finding the diameter of a circle?
two times the radius (d=2r)
0.3 times 2r- 0.3 times3 equals 0.2r plus 0.9?
0.3(2r) - 0.3(3) = 0.2(r) + 0.9Clear parentheses:0.6r - 0.9 = 0.2r + 0.9Multiply each side by 10:6r - 9 = 2r + 9Add 9 to each side:6r = 2r + 18Subtract 2r from each side:4r = 18Divide each side by 4:r = 18/4 = 4.5
What is 12-2R?
12-2r = 10
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