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REY [17]
2 years ago
6

Factor: 5x2 – 15x – 20.

Mathematics
1 answer:
Tasya [4]2 years ago
3 0

Answer:

a)~5(x-4)(x+1)

Step-by-step explanation:

~~~5x^2 -15x -20\\\\=5(x^2 -3x -4)\\\\=5(x^2 -4x +x -4)\\\\=5\textbf{[}x(x-4) +(x-4)\textbf{]}\\\\=5(x-4)(x+1)

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Consider a car owner who has an 80% chance of no accidents in a year, a 20% chance of being in a single accident in a year, and
steposvetlana [31]

Answer:

The expected loss for the car owner per year is $750.

Step-by-step explanation:

We are given that a car owner who has an 80% chance of no accidents in a year, a 20% chance of being in a single accident in a year, and no chance of being in more than one accident in a year.

Let X = Loss for the particular year for a car owner

Now as we know that the loss to the car owner may be of $0, $500, $5,000 or $15,000 because these amount he has to pay as a part of repair cost if his car met with an accident.

So, the probability distribution of X is given by;

           X (Amount of Loss)                               P(X)

                     $0                                                      0.80

                      $500                                            (0.20)(0.50) = 0.10

                      $5,000                                         (0.20)(0.40) = 0.08

                      $15,000                                      <u>  (0.20)(0.10) = 0.02 </u>

                       Total                                            <u>             1                 </u>    

Here, the probability of (0.20)(0.50) means that for the loss of $500, first the car must have to met with an accident and then there is 50% chance that after the accident the car will need repairs costing $500.

Now, the expected loss for the car owner per year is  = \sum (X \times P(X))

   \sum (X \times P(X))  =  (0 \times 0.80) + (500 \times 0.10)+(5,000 \times 0.08)+(15,000 \times 0.02)

                           =  50 + 400 + 300 = $750.

So, the expected loss for the car owner per year is $750.

4 0
3 years ago
Find the Perimeter of the<br> rectangle using the formula.<br> 4.2<br> 6.7<br> · Perimeter = 2L + 2W
Anon25 [30]

Answer:

21.8

Step-by-step explanation:

2(4.2)+2(6.7)=8.4+13.4=21.8

6 0
3 years ago
What is the equation of |x|=6
alexira [117]

Answer:

6

Step-by-step explanation:

boom

5 0
4 years ago
The orchard just sold 72 apples, which is 12% of the total number of apples they put up for sale. How many apples did they put u
LUCKY_DIMON [66]

Answer:

600

Step-by-step explanation:

12%=72

1%=6

100%=600

5 0
3 years ago
What is "three hundred nineteen thousandths" in decimal form
steposvetlana [31]

Answer:

319/1000= 0.319

Your welcome Brainliest plz

6 0
3 years ago
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