Multiply: 12m^5 / -2m^2 * 6m^6 / 28m^3
a) 9m^5 / 7
b) -9m^5 /7
c) 9m^6 / 7
d) -9m^6 / 7
d
3 answers
correct.
D is the answer.
12m^5 * 6m^6= 72m^11
Add exponents when multiplying= 11
Multiply the constant numbers= 72
-2m^2 *28m^3= -56m^5
(72m^11)/(-56m^5)= (-9/7)m^6
when dividing, the exponents needs to be subtracted. 72 and -56 both go into 8 so reduce it and gives you negative 9/7.
12m^5 * 6m^6= 72m^11
Add exponents when multiplying= 11
Multiply the constant numbers= 72
-2m^2 *28m^3= -56m^5
(72m^11)/(-56m^5)= (-9/7)m^6
when dividing, the exponents needs to be subtracted. 72 and -56 both go into 8 so reduce it and gives you negative 9/7.
thanks jessie and bobpursley