Answer:
A: -7 and 3
B: 1 and 9
C: -8 and 6
D: 4 and 10
Step-by-step explanation:
you just count the distance as your going:
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
......^.........................................^
-7 and 3 are both 5 away from -2
Answer:
A. t(n) = 20 + 60n
Step-by-step explanation:
Since Rob already had $20, the equation should have +20 to represent the money he already had.
60n can represent how much money Rob gets after washing windows, since he earned $60 from each weekend he washed windows.
So, A is the correct answer, t(n) = 20 + 60n
Y=ax2+bx+c . In this equation, the vertex of the parabola is the point (h,k) . You can see how this relates to the standard equation by multiplying it out: y=a(x−h)(x−h)+ky=ax2−2ahx+ah2+k .
Answer: tenths
Step-by-step explanation:
Answer:
Center = -3,2
radius = sqrt(65)
(x+3)^2 + (y-2)^2 = 65
Step-by-step explanation:
We can find the center of the circle by finding the midpoint of the diameter
midpoint = (x1+x2)/2, (y1+y2)/2
= (-10+4)/2, (-2+6)/2
= (-6/2), (4/2)
= -3, 2
Center = -3,2 = (h,k)
The radius is the distance from the midpoint to one of the points on the diameter. Using the points (-3,2) and (4,6)
distance = sqrt ( (x2-x1)^2 + (y1-y2)^2)
= sqrt(( 4--3)^2 + (6 -2)^2)
= sqrt(( 4+3)^2 + (6 -2)^2)
= sqrt( 7^2 + 4^2)
= sqrt(49+16)
radius = sqrt(65)
The equation of a circle is given by
(x-h)^2 + (y-k) ^2 = r^2
(x--3)^2 + (y-2)^2 = sqrt(65)^2
(x+3)^2 + (y-2)^2 = 65