Answer:
1.3917
Step-by-step explanation:
logb 15 =
We know that log (ac) = log a + log c
logb 15 = logb (3*5)
= logb (3) + log b (5)
logb(3) = 0.5646 and logb(5) = 0.8271
= 0.5646 + 0.8271
1.3917
Answer:
26 cm
Step-by-step explanation:
Answer:
1,280
Step-by-step explanation:
prob(spots) = 12/180 = 1/15
so of the 1200 frogs, (1/15)(1200) should have spots, so ..
how many should not have frogs ?
or
prob(not spots) = 14/15
number who don't have spots = (14/15)(1200) = 1,280
Answer:
8.
Step-by-step explanation:
The mean would be all the marks times the frequencies, then divided by the total of frequencies.
(6 * 5) + (7 * 4) + (8 * 7) + (9 * 10) + (10 * 4) = 30 + 28 + 56 + 90 + 40 = 58 + 146 + 40 = 244.
The total of frequencies are 5 + 4 + 7 + 10 + 4 = 30.
244 / 30 = 122/15 = 8.1333333.
So, the mean is about 8.
Hope this helps!
Answer:
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Step-by-step explanation:(;