2007-08-09 05:33:23 · 17 answers · asked by Anonymous in Education & Reference ➔ Homework Help
make into improper fractions:
15/4 and 7/2
multiply denominators
15x7=105
now the denominators
4x2=8
now divide 105/8=13 1/8
2007-08-09 05:36:01 · answer #1 · answered by ignoramus 7 · 1⤊ 1⤋
3 3/4 * 3 1/2 = 15/4 * 7/2 = 105/8 = 13 1/8
Answer is 13 1/8 or 13.125
2007-08-09 05:38:25 · answer #2 · answered by MedievalLoser 2 · 1⤊ 0⤋
Firstly, expand the fraction (improper fraction):
3 3/4 --------> 12/4 + 3/4 = 15/4
3 1/2 --------> 6/2 + 1/2 = 7/2
Multiply them together:
15 ----- - 7 (15 X 7 = 105) Multiply the numerators
__ ---x- __
4 ------ - 2 (4 X 2 = 8) Multiply the denominators
= 105/8 which is simplified to:
13 1/8
2007-08-09 05:43:39 · answer #3 · answered by Anonymous · 0⤊ 0⤋
3 3/4 x 3 1/2
first you need to make the numbers into a form that you can work with.
15/4 =3 3/4
7/2= 3 1/2
15/4 x 7/2=105/8
105/8 =13 1/8
2007-08-09 05:42:09 · answer #4 · answered by shrugger 4 · 1⤊ 0⤋
3 3/4 * 3 1/2
= 15/4 * 7/2
= 105/8
2007-08-09 05:38:08 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Okay well 3 3/4 is the same as 3.75
and 3 1/2 is the same as 3.5
you can punch those into a calculator and get
= 13.125
2007-08-09 05:38:37 · answer #6 · answered by southernsweetie 3 · 1⤊ 0⤋
13 1/8
2007-08-09 05:41:00 · answer #7 · answered by Monstblitz 4 · 1⤊ 0⤋
3 1/2 = 13/2
3 3/4 = 15/2
15/2X13/2 = 195/4 = 13 1/8
2007-08-09 05:37:14 · answer #8 · answered by sarah 2 · 1⤊ 1⤋
15/4 times 7/2
105/8=
13 1/8
2007-08-09 05:57:40 · answer #9 · answered by luckygirl1192002 3 · 0⤊ 0⤋
3 3/4= 3.75
3 1/2= 3.5
3.75 * 3.5= 13.125
2007-08-09 07:36:09 · answer #10 · answered by Srm2212 5 · 0⤊ 0⤋