Prime factorization of 240 in expanded form

C)24 · 3 · 5

Step-by-step explanation:

Factor the number until you get down to the number 15. At this point, factor by 3 and you’ll be able to finish. 240 = 2 · 2 · 2 · 2 · 3 · 5 = 24 · 3 · 5. The choices containing 7 as a factor could have been eliminated immediately, by attempting to divide 240 by 7.

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13