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Dafna1 [17]
4 years ago
15

If 1/4cotx - 11 = -9, then cotx = _____. 1/2 5 8 80

Mathematics
1 answer:
EleoNora [17]4 years ago
3 0
Answer: 
8 

Explanation: 
\frac{1}{4}cotx – 11 = -9 
To solve algebraically, try to get cotx alone.
First, add 11 to both sides:
\frac{1}{4}cotx – 11 + 11 = -9 + 11
\frac{1}{4}cotx = 2 
Now divide by \frac{1}{4} on both sides, which is the same as multiplying the other side by 4:
\frac{1}{4}cotx ÷  \frac{1}{4} = 2 ÷ \frac{1}{4} 
cotx = 8
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