Estimate the sum. 85 + 61.7
2 answers:
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Answer:
|CE|=2
Step-by-step explanation:
The quadrilateral is shown in the attachment
Recall that the diagonals of a rectangle are congruent.
This implies that:
|AC|=|BD|
We substitute the expressions to get:
This is now a linear equation in one variable.
Group similar terms to get:
Simplify to get:
15=3x
Divide both sides by 3 to get:
Recall again that the diagonals of a quadrilateral bisect each other.
Plug x=5
Answer:
see explanation
Step-by-step explanation:
(a)
AB = AO + OB = - a + b = b - a
(b)
OP = OA + AP = a + (b - a ) = a +
b -
a =
a -
b