38) what is 2 1 4 · 9 5 ?
a) 1 1/4
b) 1 5/12
c) 3 17/20
d) 4 1 /20

D.) 4 1/20

Step-by-step explanation:

2 1/4 * 9/5

Change 2 1/4 to an improper fraction

4*2+1 = 9/4

9/4 * 9/5

Multiply straight across the numerators and then straight across the denominators

9 * 9 = 81   4 * 5 = 20

81/20

Change this back into a mixed number

81 divided by 20 = 4 1/20

b 41/20 because it makes most sense

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

the correct answer is 5 6 and 7