<span>What is the axis of symmetry for f(x)=5(x+7)(x-5)? Multiply out this polynomial to obtain the equation of a parabola in the form y = ax^2 + bx + c.
f(x) = 5(x^2 - 5x + 7x -35)
Holding the coefficient 5, we have 1x^2 - 2x - 35. Here a = 1 and b = -2, and
thus x = -b / (2a) provides the x-coord. of the axis of symm. It is:
x = -(-2) / (2*1) = 1.
The axis of symmetry is the vertical line x = 1.</span>
Answer:
$37.50
Step-by-step explanation:
$60 x .25 = $15 (tip)
$60 (meal) + $15 (tip) = $75
$75 ÷ 2 (# of people splitting the cost) = $37.50
Answer:
Volume of square pyramid = 148.1 m³ (Approx.)
Step-by-step explanation:
Given:
Side length of base of square pyramid 6.6 meter
Height of square pyramid = 10.2 meter
Find:
Volume of square pyramid
Computation;
Volume of square pyramid = a²[h/3]
Volume of square pyramid = (6.6)²[(10.2)/3]
Volume of square pyramid = [43.56][3.4]
Volume of square pyramid = 148.104
Volume of square pyramid = 148.1 m³ (Approx.)
Answer:
10 hours
Step-by-step explanation:
Let 
represent the distance the train heading north has traveled
Let 
represent the distance the train heading south has traveled
Let 
represent the number of hours that has passed
Question #1 = <span>the amount of snow that falls each hour
question #2 = the starting amount of snow
algebra sucks, keep up the good work
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