12x^2-17xy-5y^2 factorise
1 answer:
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Answer:
x = 10
Step-by-step explanation:
Using the rules of logarithms
• log x + log y ⇔ log(xy)
• log ⇔ n log x
• log x = log y ⇒ x = y
Given
ln20 + ln5 = 2 lnx , then
ln(20 × 5) = ln
ln 100 = ln, hence
x² = 100 ( take the square root of both sides )
x = 10
Answer: a) 11,238,513 and b) 292,201,338
Step-by-step explanation:
Since we have given that
Number of white balls = 69
Number of white balls drawn = 5
Number of red balls = 26
Number of red balls drawn = 1
According to question, The Powerball jackpot is won by matching all five white balls in any order and the red Powerball.
So, a) Possible different ways of Powerball tickets can be purchased is given by
And
b) Number of possible ways of different winning Poweball tickets are there would be
Hence, a) 11,238,513 and b) 292,201,338