The percentage of people that should be seen by the doctor between 13 and 17 minutes for this to be considered a normal distribution is; 100%.
<h3>Normal distribution</h3>
According to the question;
- Wait times at a doctor's office are typically 15 minutes, with standard deviation of 2 minutes.
In essence, the wait time can be written as;
- Wait time = 15 ± 2 minutes.
Otherwise written as;
- 13 minutes <= wait time <= 15 minutes
Ultimately, all (100%) of people should be seen by the doctor between 13 and 17 minutes.
Read more on normal distribution;
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All you have to do it combine one pair of like terms with eachother for each time you move further on the pyramid.
PYRAMID A :
1ST LINE : -2x + 3
2ND LINE : -9x + 6 and 7x - 4
3RD LINE : 3x - 4 and -12x + 10 and 7x - 4
4TH LINE : 2x - 3 and x - 1 and -12x + 10 and 7x - 4
5TH LINE : -6x + 0 and 8x - 3 and x - 1 and -12x + 10 and 7x - 4.
6TH LINE : 2x - 6 and -8x + 6 and 8x - 3 and x - 1 and -12x + 10 and 7x - 4
7TH LINE : (we'll combine the first two terms from below) -1x - 2 and 3x - 4 and -8x + 6 and 8x - 3 and x - 1 and -12x + 10 and 7x - 4.
8TH LINE : it's already given in Pyramid A.
. . .
PYRAMID B :
1ST LINE : 2x - 3y - 6
2ND LINE : 4x - 2y - 5 and -2x - y - 1
3RD LINE : 5x - y - 5 and -x - y and -2x - y - 1
4TH LINE : -x + 2y - 3 and 6x - 4y - 2 and -x - y and -2x - y - 1
5TH LINE : -2x + 2y - 3 and x + y and 6x - 4y - 2 and -x - y and -2x - y - 1
6TH LINE : 2x + 3y - 4 and -4x - y + 1 and x + y and 6x - 4y - 2 and -x - y and -2x - y - 1
7TH LINE : 3x + y + 8 and -x + 2y + 4 and 4x - y + 1 and x + y and 6x - 4y - 2 and -x - y and -2x - y - 1
8TH LINE : given in the attachment, Pyramid B
Answer:
-3 and -8
Step-by-step explanation:
Let the two numbers be called a and b respectively. We can say that ab=-24, and a+b=-11.
If a+b=-11, a=-11-b.
ab=-24
(-11-b)b=-24
b²+11b+24=0
(b+3)(b+8)=0
b=-3, b=-8
a=-11-b=-11+3=-8
a=-11-b=-11+8=-3
So the numbers are -3 and -8
Subtract x from both sides of the equation, this will allow only one side to have a variable.
The next 35 out of 1000 will order both turkey and ham
let x be the number of people who will order both turkey and ham
the sum of all of them must be 1000
300+390-x+x+345-x =1000
1035-x = 1000
x= 35