Does anyone know how to do 9 and 10 ???
2 answers:
9.2x-9<7 add 9 to both sides, 2x<16 divide both sides by 2, x<8 A. 10.n<5 -4n+11>-9 Subtract 11 from both sides -4n>-20 then, divide both sides by -4 In these greather than less than equations, when you divide a negative by another negative, you must flip the sign so that would be, n<5 D
9) 2x - 9 < 7 Add 9 to both sides. 2x < 7 + 9 Simplify. 2x < 16 Divide both sides by 2. x < 8 10) Go through each answer choice & check. a) 4n + 11 > -9 Subtract 11 from both sides. 4n > -9 - 11 Simplify. 4n > -20 Divide both sides by 4. n > -5 (a) is incorrect. b) 4n + 11 < -9 Subtract 11 from both sides. 4n < -9 - 11 Simplify. 4n < -20 Divide both sides by 4. n < 5 (b) is incorrect c) -4n + 11 <-9 Subtract 11 from both sides. -4n < -9 - 11 Simplify. -4n < -20 Divide both sides by -4. n > 5 (c) is incorrect d) -4n + 11 > -9 Subtract 11 from both sides. -4n > -9 - 11 Simplify. -4n > -20 Divide both sides by -4. n < 5 (d) is correct ~Hope I helped!~
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