Hi guys! No free points :v
What is:
?
You cant use calculator it wont work :/

-1

Step-by-step explanation:

Let s be the answer.

Thus:

s = 1 + 2 + 4 + 8 + ...

s = 1 + 2 × (1 + 2 + 4 + 8 + ... )

s = 1 + 2 × s

s = 1 + 2s

2s - s = -1

s = -1

I hope this helps :)

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2

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