Answer:
Step-by-step explanation:
1) 6 and -5
x₁ + x₂ = 6 +(-5) = 1
x₁* x₂ = 6*(-5) = -30
x² -(x₁ + x₂)x + (x₁* x₂)=0
x² - x - 30 = 0
2) 4 and 7
x₁ + x₂ =4 + 7 = 11
x₁* x₂ = 4*7 = 28
x² - 11x + 28 = 0
3) 1 and -10
x₁ + x₂ = 1 +(-10) = -9
x₁* x₂ = 1*(-10) = -10
x² - 9x - 10 = 0
4) -9 and 0
x₁ + x₂ = -9 + 0 = -9
x₁* x₂ = 0
x² - (-9)x = 0
x² + 9x = 0
5)2 and 6
x₁ + x₂ = 2 + 6 = 8
x₁* x₂ = 2*6 = 12
x² -8x + 12 = 0
8) 2 +√3 and 2 - √3
x₁ + x₂ = 2+ √3 + 2 - √3 = 4
x₁* x₂ = (2 + √3)(2 - √3) = 2² - (√3)² 4 - 3 = 1
x² - 4x + 1 = 0
Answer:
(a)0.51
Step-by-step explanation:
Total number of Selected Students =100
Number who play organized Sports=51
We are to determine the Probability that a student selected at random plays organised sports.
Probability=Number of Required Outcome ÷ Total Number of Outcome.
(a) P(a student plays organised sports)=51÷100=0.51
(b)A probability of 0.51 means that there is a 51% chance that a student selected at random plays organised sports. The chances a just a little higher than the probability that a student does not play organized sports.
I believe that is gonna be the 225 package.
Thats the lowest number that both 25 and 9 go into
Yes they are proportional
Formula:
-20/-15 = x/6
If you solve this equation for x it should evaluate to x = 8 which indicates it is proportional.
Notice the position of -20, -15, 6, and 8 in the chart and in the fraction
