You have questions? We got answers!

Science & Mathematics by Anonymous 2018-07-08 15:04:10
Social Science
Hey, For real I need help on this: 2.7(13r - 8.3) = 98 rounded to the nearest tenth. Thanks in advance to whoever can find the answer.?
5 answers
-
Anonymous
The answer is r = 3.4 rounded to the nearest tenth
-
Anonymous
35•1 r - 22•41 = 98 35•1 r = 120•41 r = 120•41 / 35•1 r = 3•4
-
Anonymous
Simple arithmetic
-
Anonymous
2.7(13r - 8.3) = 98 13r - 8.3 = 36.296 13r = 44.596 r = 3.4
-
Anonymous
2.7(13r - 8.3) = 98 35.1 (r - 0.638462) = 98 35.1 r - 22.41 = 98 35.1 r - 120.41 = 0 Solution: r ≈ 3.43048