Answer:
-20
Step-by-step explanation:
5
x
−
4
y
=
−
20
Find the x-intercepts.
Tap for more steps...
x-intercept(s):
(
−
4
,
0
)
Find the y-intercepts.
y-intercept(s):
(
0
,
5
)
List the intersections.
x-intercept(s):
(
−
4
,
0
)
y-intercept(s):
(
0
,
5
)
(3x−9x)+(12+8)
Answer
−6x+20
Circumfrance 37.68
Diameter of 16 meters
Radius of 7 meters
Diameter of 8 meters. That is ur order
Answer:
B. (1,5) and (5.25, 3.94)
Step-by-step explanation:
The answer is where the 2 equations intersect.
We need to solve the following system of equations:
y = -x^2 + 6x
4y = 21 - x
From the second equation:
x = 21 - 4y
Plug this into the first equation:
y = -(21 - 4y)^2 + 6(21 - 4y)
y = -(441 - 168y + 16y^2)+ 126 - 24y
y = -441 + 168y - 16y^2 + 126 - 24y
16y^2 + y - 168y + 24y + 441 - 126 = 0
16y^2 - 143y + 315 = 0
y = [-(-143) +/- sqrt ((-143)^2 - 4 * 16 * 315)]/ (2*16)
y = 5, 3.938
When y = 5:
x = 21 - 4(5) = 1
When y = 3.938
x = 21 - 4(3.938) = 5.25.
