Answer:
-6 ;
ax² + bx + c ;
-1
Step-by-step explanation:
1)
Give thequadratic equation :
4x² - 6x - 5
The values of a, b, c are the Coefficient of x², x and the constant respectively
Therefore, the value of b is the Coefficient of x = - 6
2.)
Standard form of a quadratic equation is :
ax² + bx + c
a = Coefficient of x² ; b = Coefficient of x ; c is a constant
3.)
2x² - 4x + 7
Axis of symmetry :
-b / 2a
a = 2 ; b = - 4, c = 7
-b / 2a = - 4 / 2(2)
= - 4 / 4
= - 1
Answer:
See below.
Step-by-step explanation:
The theoretical probability of choosing a particular colour is 1/6 or 16.67% so for 625 picks we would expect 625/6 = 104 to be the result.
Part A Yellow. The experimental probability is 106/625 = 16.96% and the theoretical probability = 16.67%.
Part B Green. The experimental probability is 142/625 = 22.72% and the theoretical probability is 16.67%.
6/5 because flip the second number and multiply when dividing fractions.