Answer:

Step-by-step explanation:
Quadratic function-
It is a function that can be represented by an equation of the form
, where
In a quadratic function, the greatest power of the variable is 2.
As in the first option the highest power is 3, so it is not a quadratic function.
Even though the power of x is 2 in the third option, but as it is in the denominator, so the overall power of x becomes -2. Hence it is not a quadratic function.
As the coefficient of
is 0 in case of fourth option, so it is not a quadratic function.
Equation in option 2 satisfies all the conditions of quadratic function, hence it is the quadratic function.
Answer:
Step-by-step explanation:
place x = 19
f(19) = 3 / 19 + 2 - Sqrt 21 - 3
= 3/21 - 4
= - 81/21
= - 27/7
Answer:
670
Step-by-step explanation:
(3*1+2)+(3*2+2)+........(3*20+2)=670
Answer:
Amount of milk in each milkshake = 7 2/3 gallons
Step-by-step explanation:
Gallons of milk = 23 (given)
Number of Milkshakes = 3
Because the gallons of milk were shared equally,
Amount of milk in each milkshake = 23/3 = 7 2/3 gallons of milk
Ex. 9 divided by 3=3 because 3x3=9