The awnser issss d!!!!!!!!
A quadratic equation is an equation whose leading coefficient is of the second degree. The factored form of the quadratic equation x²-x-2 is (x+1)(x-2).
<h3>What is a quadratic equation?</h3>
A quadratic equation is an equation whose leading coefficient is of second degree also the equation has only one unknown while it has 3 unknown numbers.
It is written in the form of ax²+bx+c.
The factored form of the quadratic equation can be done in the following manner,

Thus, the factored form of the quadratic equation x²-x-2 is (x+1)(x-2).
Learn more about Quadratic Equations:
brainly.com/question/2263981
Answer:
Area of circle is 
Step-by-step explanation:
Formula for circumference of circle is given as,

Given that C = 15 n cm,
Substituting the value,

Solving above equation for r, divide both side by 

Simplifying,

Formula for area of circle is given as,

Substituting the value of r,

Squaring the parenthesis,

Cancelling out the common term,

Therefore, area of circle in terms of n is 
Answer:
1.a. not a function
1.b. function
1.c. function
1.d. not a function
1.e. not a function
1.f. not a function
Step-by-step explanation:
1.a.
The arrows from x to y show that the ordered pairs of this function are:
(1, 4), (1, 5), (0, 7), (1, 6), (2, 5).
Since the x-coordinate 1 is used in two different ordered pairs, (1, 4) and (1, 5), this relation is not a function.
1.b.
Each x-coordinate is used only once, so this relation is a function.
1.c.
All x-coordinates are different. Function.
1.d.
Two ordered pairs have the same x-coordinate. Not a function.
1.e.
Two ordered pairs have the same x-coordinate. Not a function.
1.f.
Two ordered pairs have the same x-coordinate. It does not pass the vertical line test. Not a function.
Answer:
40 subscriptions
Step-by-step explanation:
25=5+0.50n
subtract 5 from both sides
20=0.50n
divide by 0.50
40=n
he sold 40 subscriptions