11.3-7.2f = -3.82
-11.3 -11.30
_____________
-7.2f = -15.12
____ _____
-7.2 -7.2
f = 2.1
15.50+1.50x =26
1.50x = 10.50
x = 7
answer: he can ride 7 in one day
Answer:
it's 8
Step-by-step explanation:
(10×1/5)^3=2^3=8
Notice it is +/-4 times standard deviation (0.65-0.04 = 0.61, 0.69-0.04=0.65)
That's almost everything. So (D) is the answer.
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