What is the discriminant of the polynomial below 9x^2-18x+9?

Mathematics

1 answer:

harkovskaia [24]4 years ago

6 0

(3x-3 )(3x-3 ) is answee

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natulia [17]

Answer:

16.7%.

Step-by-step explanation:

There are initially $24 + 15 + 8 = 47$ pencils in the bag.

Take a pencil out of this bag of 47 pencils. 15 out of the 47 pencils blue. Let $A$ represent the event of getting a blue pencil on the first pick. The probability of getting a blue pencil is:

$\displaystyle P(A) = \frac{15}{47}$ .

There are now $47 - 1 = 46$ pencils left in the bag. However, given that the first pencil removed from the bag is blue, the number of red pencils in the bag will still be 24. Take another pencil out of this bag of 46 pencils. Let $B$ represent the event of getting a red pencil on the second pick. The possibility that the second pencil is red given that the first pencil is blue will be:

$\displaystyle P(B|A) = \frac{24}{46}$ .

The question is asking for the possibility that the first pencil is blue and the second pencil is red. That is:

$\displaystyle P(A\cap B) = P(A) \cdot P(B|A) = \frac{15}{47}\times \frac{24}{46} = 0.166512 \approx 16.7\%$ .

5 0

4 years ago

I need Help fast!!!!

GrogVix [38]

Answer:

7 miles per gallon

Step-by-step explanation:

7 0

3 years ago

How do I simplify 5/15

Thepotemich [5.8K]

Answer:

Find what <u>both fractions</u> are <u>divisible</u> by.

Step-by-step explanation:

Take $\frac{5}{15}$ and if needed, use a multiplication tabel to help you figure out what both numbers are divisible by. 5 and 15 are both divisible by 5. Now you can reduce the answer to $\frac{1}{3}$ .