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Paul [167]
3 years ago
7

Need help fast show work please

Mathematics
1 answer:
dexar [7]3 years ago
8 0
Just saying if your looking for an answer you don't have to show work for it.
You might be interested in
A car insurance company has determined that 66​% of all drivers were involved in a car accident last year. Among the 1010 driver
jenyasd209 [6]

Answer: Our required probability is 0.618.

Step-by-step explanation:

Since we have given that

Probability of all drivers were involved in a car accident last year = 66%

Number of drivers = 10

Number of drivers involved in a car accident = 3

So, probability of drivers involved in car accident is given by

\dfrac{3}{10}\\\\=0.3

Probability of getting 3 or more who were involved in a car accident is given by

P(X≥3)=1-P(X=0)-P(X=1)-P(X=2)

Here,

P(X=0)=^{10}C_0(0.7)^{10}=0.028\\\\P(X=1)=^{10}C_1(0.7)^9(0.3)=0.121\\\\P(X=2)=^{10}C_2(0.7)^8(0.3)^2=0.233

So, our equation becomes

P(X≥3)=1-P(X=0)-P(X=1)-P(X=2)

P(X\geq 3)=1-0.028-0.121-0.233=0.618

Hence, our required probability is 0.618.

4 0
3 years ago
In a class of 29 students, 19 are female and 14 have an a in the class. there are 8 students who are male and do not have an a i
vodomira [7]

Answer:

5/ 19 ≈ 0.26 = 26%

Step-by-step explanation:

given: student is female. there is a 100% chance that the student is female

probability we want = (favorable outcomes) / (total outcomes)

total outcomes = 19 because there are 19 female students and the student must be female

favorable outcomes = 19 - 14 = 5 females who do not have an A in the class

probability = 5/ 19 ≈ 0.26 = 26%

3 0
2 years ago
Solve by adding or subtracting.<br> x+y=-10<br> 2x-y=-8
riadik2000 [5.3K]

Answer:

x=-6\\y=-4

Step-by-step explanation:

To solve, isolate your first equation for y.

x+y=-10\\y=-x-10

Now, plug in this y value to your second equation.

2x-(-x-10)=-8\\2x+x+10=-8\\3x+10=-8\\3x=-18\\x=-6

Now, plug your x value into your first equation and solve for y.

-6+y=-10\\y=-4

3 0
4 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20-x-6" id="TexFormula1" title="x^{2} -x-6" alt="x^{2} -x-6" align="absmiddle" cla
garik1379 [7]

Answer:

1. (x-3)(x+2)

2. (x-5)(x-3)

3. x= 2,1

4. x= -2,-4

5. x= 3,-7

6. x= 1,-8

7. x= 5,-7

8. x= -1/3,-2

Step-by-step explanation:

6 0
3 years ago
The Wilsons have triplets and another child who is thirteen years old. The sum of the ages of their children is 37. How old are
valentinak56 [21]
The answer is 8 years old.
4 0
3 years ago
Read 2 more answers
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