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August 1, 2015

Homework Help: Math

Posted by Callie on Friday, January 20, 2012 at 2:38pm.

The point A (-7, 5) is reflected over the line x = -5, and then is reflected over the line x = 2. What are the coordinates of A'?

(7, 19)
(10, 5)
(7, 5)
(10, 19)







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The vertices of an isosceles triangle are A(3, 6), B(7, 2), and C(4, 3).

What is the equation of the triangle's line of symmetry?

y = x + 1
y = x - 1
y = x
y = -x + 1







Question #46










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The area of a circle is 16π cm2. What is the circle's circumference?

2π cm
4π cm
8π cm
16π cm







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If AC = 20, AE = 25, and AB = 5, what is the length of ?

4
5
6
3







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A square pyramid is 6 feet on each side. The height of the pyramid is 4 feet. What is the total area of the pyramid?

60 ft2
156 ft2
96 ft2
120 ft2







Question #49










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A'B'C'D' is the image of ABCD. What transformation(s) would result in this image?

ABCD is reflected over the line y = x.
ABCD is dilated about the origin with a scale factor of -1.
ABCD is reflected across the y-axis and then the x-axis.
ABCD is rotated 180 around the origin.







Question #50










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A circle has a diameter with endpoints (-8, 2) and (-2, 6).

What is the equation of the circle?

r2 = (x - 3)2 + (y + 4)2
r2 = (x - 5)2 + (y + 4)2
r2 = (x + 5)2 + (y - 4)2
r2 = (x + 3)2 + (y - 4)2

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