In short, for a vertical parabola, namely one whose independent variable is on the x-axis, usually is x², if the leading term coefficient is negative, the parabola opens downward, and its peak or vertex is at a maximum, check the picture below at the left-hand-side.
and when the leading term coefficient is positive, the parabola opens upwards, with a minimum, check the picture below at the right-hand-side.
Answer:
Step-by-step explanation:
Givens
Let the least number = x
Let the largest number = 2x
Let the second number = x + 3
The sum = 75
Equation
x + 2x + x + 3 = 75 Combine the terms on the left
Solution
4x + 3 = 75 Subtract 3 from both sides
4x +3-3= 75-3
4x = 72 Divide by 4
4x/4 = 72/4
x = 18
Answer
Smallest number = 18
Second number = 18 + 3 = 21
Largest number = 2*18 = 36
Sum = 75
What do you mean put in standard form?