Answer:
2.99
Step-by-step explanation:
5 minus 2.01 is 2.99
It is B because when two lines are perpendicular, they are defined as being right angles to each other
Answer:
<h2>
25/9</h2>
Step-by-step explanation:
hello :
this expression equivalent to : (3/a)^5
because ;3²a^(-2)/3a^(-1)= (3²/3)×(a^(-2)/a^(-1)) = 3a^(-2+1) = 3a^(-1) = 3/a
now : a=5 and k= -2 so : (3/5)^(-2) = (5/3)² =25/9
<h3>
Answer: 8/31</h3>
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Explanation:
16/31 represents the probability of picking a white marble
This is because there are 16 white out of 15+16 = 31 total.
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After we make a first selection, we have 16-1 = 15 white marbles left out of 31-1 = 30 marbles overall. The probability of selecting another white marble is 15/30 = 1/2.
Multiply those two fractions:
(16/31)*(1/2) = (16*1)/(31*2) = (2*8)/(31*2) = 8/31
which represents the probability of selecting two white marbles in a row, such that we don't put the first one back (and there's no replacement).