The key words you should notice when looking at this word problem are “less than.” This means that the order is flipped, so “3 less than k” means “k minus 3.”
The expression for the ratio is k-3:k+3
Hope this helps
9514 1404 393
Answer:
Step-by-step explanation:
Horizontally the table values total the number in the first column.
first row missing table value = 700 -665 = 35
second row missing table values = 300 -240 = 60
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The conditional probability formula applies.
P(contains | positive) = P(contains & positive)/P(positive)
The probability associated with each table entry is that value divided by 1000. Then the numbers in the formula are ...
P(contains | positive) = .665/(.665+.060) = .665/.725 ≈ 91.7%
Answer:
x=-2, y=-4. (-2, -4).
Step-by-step explanation:
x=3y+10
x=y+2
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3y+10=y+2
3y-y=2-10
2y=-8
y=-8/2
y=-4
x=-4+2=-2
Multiply the numerator and denominator.
