Answer:
- No
- Yes
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Answer: The sum is 3.
Step-by-step explanation:
If we have a parabola, y = a*x^2 + b*x + c
We want to find the point (x, y) that corresponds to the vertex of that parabola.
The vertex of the parabola is at x value:
x = -b/2a
in this case
a = 1, b = 0, c = 3
then our vertex is at:
x = -0/2*1 = 0
Now we evaluate y(x) in this value and get:
y(0) = a*0^2 + 3 = 3
Then the vertex is at the point (0, 3)
the sum of the coordinates of the vertex is:
S = 0 + 3 = 3
Answer:
2122.64 in^2
Step-by-step explanation:
Use the formula for the area of a circle: A=πr^2
The radius will be half the width of the cloth so 52÷2=26
26^2=676
Multiply by π given as 3.14
676×3.14=2122.64 square inches.
The symbol (carat) ^ is used to indicate an exponent when the keyboard doesn't have superscript.
He can run 2.5 miles per hour
The values of <span> f(-2), f(-0.5), and f(3) can be solved by substituting the values inside the parentheses to the function to the variable x. We do as follows:
</span><span>1. f(x)=-x+4
</span>f(-2) =-x+4 = 2+4 = 6
f(-0.5) =-x+4 = 0.5 + 4 = 4.5
f(3) =-x+4 = -3+4 = 1<span>
2. f(x)= 3/8x-3
</span>f(-2)= 3/8x-3 = -15/4<span>
f(-0.5) </span>= 3/8x-3 = -51/16<span>
f(3) </span>= 3/8x-3 = -15/8
Hope these answers the question.
