Answer:
Im pretty sure its 11 because if you look at 145 mark its at between 10 and 12, Hopefully that helps!
Step-by-step explanation:
Answer:
21√2 m
Step-by-step explanation:
AC = √AD²+CD²
= √21²+21²
=√2×21²
= 21√2 m
Answer:
9
Step-by-step explanation:
9
Hmm they're both even numbers so maybe we can start by cutting each number in half.

18 and 48 had 2 as a common factor.
So factoring a 2 out of each number was the same as cutting each number in half. Try to do something similar with the 9 and 24. They each have something in common.
Answer: Choice B) SAS
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Explanation:
The sides that have the double tickmarks are the same length. This forms one "S" of "SAS".
The square angles are 90 degree angles, or right angles. They are congruent. This forms the "A" of "SAS".
The overlapping sides are the same length, which forms the second "S" of "SAS".
The angle is between the two sides allowing us to use SAS. The order is important.