well, the scale factors must be the same for an expansion or reduction.
And of course, for a reduction, the scale must be less than 1, right?
For the Pythagorean triples a,b,c, you must have
a^2 + b^2 = c^2
where c is the largest of the three values.
So, check the triples to see which doesn't fit the bill.
For example, 13^2 + 84^2 = 169 + 7056 = 7225 = 85^2
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
i dont know them pls help me
3 answers
thanks and i think the first one is a?
yes, it is