Hey guys! a friend and I are confused and could really use the help. could you explain why? thanks!
2 answers:
Answers:
- substitution
- definition of perpendicular
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Explanation:
The first dropdown box is "substitution" because we are replacing, aka substituting, the with
. This replacement is valid because we are given that
. They are congruent angles.
The second dropdown box is "definition of perpendicular". If we have a 90 degree angle like this, then the two lines are considered perpendicular simply by definition.
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Answer:
5 cm and 13 cm
Step-by-step explanation:
Let b be the width of the rectangle.
Length = 3+2b
The area of the rectangle is 65 cm²
We need to find the dimensions of the rectangle. The area of a rectangle is given by :
A = lb
Neglecting the negative value, the width of the rectangle is 5 cm.
Length = 3+2b
=3+2(5)
=3+10
=13 cm
Hence, the dimensions of the rectangle are 5 cm and 13 cm.