Question

Which represents a reduction?
A
(x,y) —> (0.9x, 0.9y)
B
(x,y) —> (1.4x, 1.4y)
C
(x,y) —> (0.7x, 0.3y)
D
(x,y) —> (2.5x, 2.5y)
11
Which set of lengths are not the side
lengths of a right triangle?
A
28, 45, 53
B
13, 84, 85
C
36, 77, 85
D
16, 61, 65

Answer 1

for a reduction, both scales must be the same, and less than 1

For the triangle, just get out your calculator and check!

28^2+45^2 = 2809 = 53^2
so that one works out

Now do the others.

Answer 2

For the first question it's A for the second one it's D.Hope this helps.

Answer 3

(x,y)——->(0.9x,0.9y)
(x,y)——->(0.7x,0.3y)
(x,y)——->(1.4x,1.4y)
(x,y)——->(2.5x,2.5y)
Which represents a reduction

Answer 4

sdf