The answer is 40 hours.
$500 + $10 x 40 = $900
$300 + $15 x 40 = $900
It would be j because 9x3 is 27 and in half would be 13.5
The proof of the equation (sin²x) / (1-cosx) = (secx+1) / (secx) is given below.
<h3>What is trigonometry?</h3>
The connection between the lengths and angles of a triangular shape is the subject of trigonometry.
The equation is given below.
(sin²x) / (1-cosx) = (secx+1) / (secx)
Taking the left-hand side, then we have
⇒ [sin²x / (1 - cos x)] × [(1 + cos x) / (1 + cos x)]
⇒ [sin²x (1 + cos x)] / [1 - cos² x)]
⇒ [sin²x (1 + cos x)] / [sin² x)]
⇒ 1 + cos x
⇒ 1 + 1/sec x
⇒ (sec x + 1) / sec x = Right-hand side
More about the trigonometry link is given below.
brainly.com/question/22698523
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In step 2 she made a mistake of not having a positive sign for 3x because if you multiply -3 and -x that would end up as +3x
Answer:
(2,5)
attached there is the step by step