Answer:
.
Step-by-step explanation:
Expand the left-hand side of this equation:
.
Collect the terms, so that this quadratic equation is in the form
:
.
.
In this equation:
Calculate the quadratic discriminant of this quadratic equation:
.
A quadratic equation has no real root if its quadratic discriminant is less then zero. As a result, this quadratic equation will have no real root when
. Solve for the range of
:
.
Answer:
C
Step-by-step explanation:
Because its a cost vs minutes graph, and it starts at (0,2) and goes to (1,5)
Y = mx + b
slope(m) = -2
(6,8)...x = 6 and y = 8
now we sub and find b, the y int
8 = -2(6) + b
8 = -12 + b
8 + 12 = b
20 = b
so ur equation is : y = -2x + 20
Gradient= y1-y2/x1-x2
=(10-6)/(4-3)=4
y=4x+c
6=4(3)+c
c=-6
equation is D
Answer:
Hi there!
The answer to this question will be:
(f+g)(x)= 3x-1