krisbiddulph1580
02.07.2019 •
Mathematics
47. if the sum of 2r and 2r + 3 is less than
11, which of the following is a possible
value of r?
(a) 11
(b) 10
(c) 3
(d) 2
(e) 1
Solved
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Ответ:
(E) 1
Step-by-step explanation:
2r+ (2r+3 ) < 11
Combine like terms
4r+3 < 11
Subtract 3 from each side
4r +3-3 < 11-3
4r < 8
Divide each side by 4
4r/4 < 8/4
r <2
The only possible choice is 1
Ответ:
Philip should buy 60 packages of pencils and erasers.