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ZanzabumX [31]
3 years ago
7

Find the missing factor. n(n-3)+2(n-3)=( )(n-3)

Mathematics
1 answer:
elena-s [515]3 years ago
3 0
This is the concept of quadratic equations. We are required to find the missing factor in the partially factored quadratic equation given;
n(n-3)+2(n-3)=()(n-3)
here we proceed as follows;
n(n-3)+2(n-3)
when we factor this we get:
(n-3)(n+2)
this can be written as:
(n+2)(n-3)
The answer is (n+2)
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a bag contains eleven counters. five are white. a counter is taken out the bag and is not replaced. a second counter is taken ou
Fed [463]

Answer:

\displaystyle P(A)=\frac{6}{11}

Step-by-step explanation:

<u>Probabilities</u>

The question describes an event where two counters are taken out of a bag that originally contains 11 counters, 5 of which are white.

Let's call W to the event of picking a white counter in any of the two extractions, and N when the counter is not white. The sample space of the random experience is

\Omega=\{WW,WN,NW,NN\}

We are required to compute the probability that only one of the counters is white. It means that the favorable options are

A=\{WN,NW\}

Let's calculate both probabilities separately. At first, there are 11 counters, and 5 of them are white. Thus the probability of picking a white counter is

\displaystyle \frac{5}{11}

Once a white counter is out, there are only 4 of them and 10 counters in total. The probability to pick a non-white counter is now

\displaystyle \frac{6}{10}

Thus the option WN has the probability

\displaystyle P(WN)=\frac{5}{11}\cdot \frac{6}{10}=\frac{30}{110}=\frac{3}{11}

Now for the second option NW. The initial probability to pick a non-white counter is

\displaystyle \frac{6}{11}

The probability to pick a white counter is

\displaystyle \frac{5}{10}

Thus the option NW has the probability

\displaystyle P(NW)=\frac{6}{11}\cdot \frac{5}{10}=\frac{30}{110}=\frac{3}{11}

The total probability of event A is the sum of both

\displaystyle P(A)=\frac{3}{11}+\frac{3}{11}=\frac{6}{11}

\boxed{\displaystyle P(A)=\frac{6}{11}}

7 0
3 years ago
What type of number is -17i
emmainna [20.7K]

Answer:

See below

Step-by-step explanation:

-17i        ' i '  stands for 'imaginary'  

<u>   this is a negative imaginary number </u>

3 0
2 years ago
What is the length of the hypotenuse?
torisob [31]

Step-by-step explanation:

25 is the answer . hope it helps

3 0
3 years ago
How many times does 9 go in to 8
Wittaler [7]

Answer:

0.89

Step-by-step explanation:

6 0
3 years ago
The computer lab at a high school ordered 26 packages of Cra. There were 50 CDs in each packages. How many CDs did the computer
astra-53 [7]
Hey You!

To solve this question, we must use multiplication:

26 × 50 = 1,300

The computer ordered 1,300 CDs.
5 0
3 years ago
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