Please do questions 31-34 I need them ASAP in 2h

Step-by-step explanation:

31) 1  1/4 × 8/9

multiply the denominator(4) with 1 which is 4 itself, then add 4 with the numerator(1) which is 5. therefore you will get,

⇒5/4 × 8/9

⇒ 5×8/4×9

⇒40/36

⇒10/9

32) 2/3 × 2  1/4

multiply the denominator(4) with 2 which is 8, then add 8 with the numerator(1) which is 9. therefore you will get,

⇒2/3 × 9/4

⇒2×9/3×4

⇒18/12

⇒3/2

33) 2  2/9 × 3/4

multiply the denominator(9) with 2 which is 18, then add 18 with the numerator(2) which is 20. therefore you will get,

⇒20/9 × 3/4

⇒20×3/9×4

⇒60/36

⇒5/3

34) 4/5 × 2  11/12

⇒4/5 × 35/12

⇒4×35/5×12

⇒140/60

⇒7/3

35) 3  1/21 × 3/8

⇒64/21 × 3/8

⇒64×3/21×8

⇒192/168

⇒8/7

36) 1  1/5 × 3  1/4

⇒6/5 × 13/4

⇒6×13/5×4

⇒78/20

⇒39/10

37) 1  1/4 × 2  2/3

⇒5/4 × 8/3

⇒5×8/4×3

⇒40/12

⇒10/3

38) 1  1/5 × 3  3/4

⇒6/5 × 15/4

⇒6×15/5×4

⇒90/20

⇒9/2

39) 3  2/7 × 2  5/8

⇒23/7 × 21/8

⇒23×21/7×8

⇒483/56

⇒69/8

40) 3  1/9 × 2  1/7

⇒28/9 × 15/7

⇒28×15/9×7

⇒420/63

⇒20/3

hope it helps you!!

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation:

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)