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Tanya [424]
3 years ago
10

How to solve 45y to the second power plus 15y minus 10 ?

Mathematics
1 answer:
Lerok [7]3 years ago
4 0

Answer:

Either y =\frac{-2}{3} or, y =\frac{1}{3}

Step-by-step explanation:

We have to solve the following quadratic equation  

45y² + 15y - 10 =0

Now, dividing both sides with 5 we get, 9y² + 3y -2 =0

Hence, to solve the above equation we have to factorize the left-hand part of the equation.

So, 9y² + 3y - 2 =0

⇒ 9y² +6y -3y -2 =0

⇒ (3y +2) (3y -1 ) =0

⇒ Either (3y +2) =0 or (3y -1) =0

⇒ Either y =\frac{-2}{3} or, y =\frac{1}{3} (Answer)

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As the probability of both the jobs are not dependent on each other, the probability that both jobs will be offered can be calculated by the formula;

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