Is 9 greater then -8?
2 answers:
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Answer:
True.
Step-by-step explanation:
It is because it is in the form and this equals
.
Why it is in that form: well comparing , we have
. Testing, plug in those values:
.
This has the squared form of .
Test if you like:
Use foil to expand:
First: x(x)=x^2
Outer: x(1)=x
Inner: 1(x)=x
Last: 1(1)=1
---------------Add together
It does indeed equal.
Answer:
Scale factor = 7
Step-by-step explanation:
Dilation with scale factor to map HEFG to DABC will be,
Scale factor =
=
Length of CD = Distance between two points C(0, -7) and D(-7, 0)
=
=
=
=
Length of GH = Distance between G(0, -1) and H(-1, 0)
=
=
Scale factor =
= 7