Answer:
C. 
Step-by-step explanation:
Let be the parametric equations
and
, we need to clear
and eliminate it afterwards to obtain a function of the form
:


(1)


(2)
By (1) and (2):



Hence, the correct answer is C.
If you would like to write 45 minutes to 1 hour in the simplest form, you can do this using the following step:
1 hour = 60 minutes
45 minutes : 60 minutes = 45 : 60 = 3 : 4 (divide both numbers by 15)
The correct result would be 3 : 4.
Answer:$128
Step-by-step explanation:
If $1=6.25 rands then we must divide 800 by 6.25
Answer:
C 377
Step-by-step explanation:
I simply typed in "surface area of cone calculator" in chrome and did it that way, since there is quite a complex formula for finding it out on your own.
(This is the formula : pi * r^2 + pi * r * sqrt (r^2+h^2)
Answer:
Yes, y =
x represents a proportional relationship and the constant of proportionality is 
Step-by-step explanation:
<em>The Proportional is a relationship between two quantity one of them equals the product of the other and a constant, where this constant called the constant of proportionality </em>
- If x and y are proportion, then y = k x, where k is the constant of proportionality
- The proportional relationship represented graphically by a line passing through the origin point (0, 0)
Let us solve the question
∵ y =
x
→ It the same as the form of the proportional equation above
∵
is a constant
∴ y is the product of x and constant
∴ y =
x represents a proportional relationship
Substitute x by 0 to find y and show it represented by a line passing through the origin
∵ x = 0
∴ y =
(0) = 0
→ That means point (0, 0) lies on the line which represents the equation
∴ The line which represents this relation is passing through the origin
∴ y =
x represents a proportional relationship
∵ y = kx, k is the constant of proportionality
∵ y =
x
∴ k =
∴ The constant of proportionality is 