Half of the numbers on the cube are even, so there's a 1/2 chance that that number is even. 3/5 of the numbers on the cards, however, are odd. The chance that both of these occur is 3/5*1/2=3/10.
Answer:
288/5
Step-by-step explanation:
simplified: (2³x 9) x 4/5 = 288/5
Answer with positive exponent =
or 
Answer with negative exponent = 
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Explanation:
The rule we use is

If we multiply two exponential expressions with the same base, then we add the exponents.
The base for each is 5. The exponents 4 and -7 add to -3.
This means

To convert to a positive exponent, we apply the reciprocal to the base. We go from 5, aka 5/1, to 1/5.
So, 
Answer:
J
Step-by-step explanation:
a1=8 (as given)
a2=a1+3=8+3=11
a3=a2+3=11+3=14
a4=a3+3=14+3=17