3.75
15:12 is the same as 5:4 ; [you divide both sides by 3]
3+4x=15 4x=15-3 4x=12 x=12/4 x=3 The check is: If x=3 then, 3+ (4 X 3)=15 3+12=15
4n + 3 = 15 4n +3 - 3 = 15 - 3 4n = 12 4n/4 = 12/4 n = 3
First, convert 33/4 from a mixed number into an improper fraction: 33/4 = (3 x 4/4) + 3/4 = 12/4 + 3/4 = 15/4 Next, multiply the two numbers together: 15/4 x 1/3 = 15/12 Finally, convert the improper fraction 15/12 into a mixed number: 15/12 ÷ 3/3 = 5/4 = 11/4
3.75
Given that: 12/3 = 4 15/3 = 5 12/15 = 4/5
4n+3 = 15 15 - 3 = 12 4n = 12 12 / 4 = 3 (3 X 4) + 3 = 15
Mean = 7.9 Median = 7 and 8 Mode = 4 and 12 Range = 2 to 15.
15:12 is the same as 5:4 ; [you divide both sides by 3]
4/12 + 3/15 = 4x1/4x3 + 3/15 = 1/3 + 3/15 = 1x5/3x5 + 3/15 = 5/15 + 3/15 = 8/15
3+4x=15 4x=15-3 4x=12 x=12/4 x=3 The check is: If x=3 then, 3+ (4 X 3)=15 3+12=15
4n + 3 = 15 4n +3 - 3 = 15 - 3 4n = 12 4n/4 = 12/4 n = 3
15: (15, 1) (5, 3) 12: (12, 1) (6, 2) (4, 3)
4-1=3 37+3=40 12+3=15 40 +15=55
3/5 x 5/12 x 4/15 = 3 x 5 x 4/5 x 12 x 15= 5 x (3 x 4)/5 x 12 x 15= 1/15
First, convert 33/4 from a mixed number into an improper fraction: 33/4 = (3 x 4/4) + 3/4 = 12/4 + 3/4 = 15/4 Next, multiply the two numbers together: 15/4 x 1/3 = 15/12 Finally, convert the improper fraction 15/12 into a mixed number: 15/12 ÷ 3/3 = 5/4 = 11/4