Answer:
D. (2x)(3x) + 5(3x - 2)
<em>good luck, i hope this helps :)
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The small right angled triangle with hypotenuse vale 5 is similar to the big triangle with b as the hypotenuse
Corresponding sides are in the same ratio so we can write
a/12 = 5/b.....(1)
Also applying pythagoras theorem to the large triangle
b^2 = 5^2 + 12^2
b^2 = 169
b = 13
So substituting in equation (1):-
a / 12 = 5 / 13
a = (5*12 ) / 13
Answer: 356
Step-by-step explanation:
you can tell by finding the middle and looking one back from the middle
109 degrees
The horizontal line = 180 degrees
Add 31 and 40 = 71
Subtract 71 from 180 = 109
