Answer :
here
13) 4
14) 3
15) 10
16) 8
17) 8
18) 2
19) 9
20) 9
Step-by-step explanation:
Hope this helps
Answer:
11
Step-by-step explanation:
9+9+11+15 = 44
44/4 = 11!
ANSWER
C) Triangle
EXPLANATION
Solving a triangle is the process of calculating unknown side lengths or angle measures of a triangle if certain of the side lengths and/or angle measures are known.
We use the sine rule and cosine rule to find the missing sides and angles.
If the triangle has a right angle, then this is a special case, where we can use the trigonometric ratios and the Pythagoras theorem to find the unknown angles and sides.
Answer:
*gives help*
:)
Step-by-step explanation:
Answer:
Rational
Step-by-step explanation:
-9 is rational because 9 is a perfect square and all perfect squares are rational.