A quadrilateral ABCD is a rhombus with two vertices A(0, 0) and B(a, 0). If the x-coordinate of D is b, then the y-coordinate of D is

(a) any number, c.
(b) ?a2+b2.
(c) ?b2-a2.
(d) ?a2-b2
e. None of these is correct


(d) ?a2-b2

Mathematics

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Find the intersection.x = -3 - 5t, y = 7 + 2t, z = 4 + 2t ; -6x - 8y - 3z = 8

A. (-8, 9, 6)
B.  
C. (2, 5, 2)
D.  

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Provide an appropriate response.Does knowing that  ? 1 tell you anything about  Give reasons for your answer.

What will be an ideal response?

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Find the center and radius and draw the graph.(x - 4)2 + (y + 5)2 = 16

A.

center (-4, 5); radius 4
B.

center (-4-5); radius 4
C.

center (4, 5); radius 4
D.

center (4, -5); radius 4

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Provide an appropriate response.Eric and Paige have agreed to pool their savings when they have saved the same amount of money. Eric can save $15 a week and will have an extra $80 when his brother pays him back in 3 weeks. Paige can save $20 a week but won't be able to start saving for 5 weeks. When will they pool their savings? How much will they each have saved?

Fill in the blank(s) with the appropriate word(s).

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