1 is A
2 is C
3 is B
hopefully this helps
<h2>
Hello!</h2>
The answer is: 
<h2>
Why?</h2>
Quadratic function describes the graph of a parabola and they are formed by a quadratic term (
) a linear term (
) and a constant number (c). Quadratic terms have an exponent of 2 and linear terms have an exponent of 1.
For this situation, we have only the quadratic term () which is enough to know that there is a quadratic function.
Have a nice day!
Constant of Variation has this formula for Direct Variation.
y = kx
Where y = cost in dollars; x = length in meters; k = constant
We will use the formula for direct variation because the problem states that the cost varies directly to the length.
In the problem we need to get the constant of variation.
k = y/x
k = $4500 / 200 meter
k = $22.50 cost per meter.
A.) The equation relating C and s is:
k = C/s
* i just substituted C for y and s for x.
B.) The constant of variation represents the additional cost that the company will pay for every meter in length they add. which is $22.50 per meter.
C.) y = kx ; substitute C and s to y and x respectively;
C = ks
C = $22.50 * 700 m
C = $15,750
Answer:
Step-by-step explanation:
Formula
r = ∛(V/( pi * 4/3)) Invert the 4/3 and multiply the numerator by 4
Solution
r = ∛ 3 V / (4 pi )) Substitute values
r = ∛ 3 * 2304 / 12.56 4*pi = 4 * 3.14 = 12.56. Multiply 3 * 2304
r = ∛ 6912 / 12.56 Divide
r = ∛ 550.3187 Take the cube root
r = 8.195
Let's apply the following formula:
(x + a)^2 = x^2 + 2ax + a^2
We know that 2ax = -20x
Now, let's solve for a
First, let's divide both sides by 2.
ax = -10x
Now, let's divide both sides by x
a = -10
Now, let's square that value to find the number that completes the square.
a^2 = (-10)^2
a^2 = 100
The number that completes the square is 100.
Have an awesome day! :)
