A statistic class has 9 boys and 11 girls. The teacher selects 3 students at random . Find probability that all are boys.
1 answer:
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Answer:
See attached
Step-by-step explanation:
<u>Given</u>
- f(x) = 3x + 2
The graph for the function is attached
Answer:
C
Step-by-step explanation:
The multiples of 3 are
3, 6, 9, 12, 15, ...........
The terms form an arithmetic sequence with common difference of 3.
The sum to n terms is
=
[2a₁ + (n - 1)d ]
where a₁ is the first term and d the common difference
Here a₁ = 3 and d = 3, thus
=
[ (2 × 3) + (139 × 3) ]
= 70(6 + 417) ] = 70 × 423 = 29610 → C