Answer:
x = -2
Step-by-step explanation:
-4x + 3y = 23
y = -7x - 9 // *-3
-4x + 3y = 23
-3y = 21x -27
+++++++++++++++++++
-4x = 21x + 50
-50 = 25x
x = -2
Circle 1's center is at x=-4 and Circle 2's center is at x=5. To translate Circle 1 to Circle 2, we need to shift the circle to the right 9 places:
5 - (-4) = +9
We do the same thing for the y value. We are going from y=-2 to y=3.
3 - (-2) = +5
So the first blank is (9, 5)
Next, the scale factor refers to the factor at which the circle is stretched or shrunk. We find it by comparing the radii. Going from 3 cm to 6 cm, the scale factor is:
6/3 = 2.
The scale factor is 2.
The answer is c 75
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Answer: D; 2.72
Step-by-step explanation:
solve for n...
5.6 + 1.4n = 2.4n + 2.88 (expanding brackets)
2.72 = 1n
n = 2.72
