The answer is 3:9 because it says that he sold 3 out of the 12 paintings and so it asks first of how many did he sell and he sold three and how many did he not sell and so it's nine left
Answer:
a² - b² = 1
Step-by-step explanation:
The given parameters are;
sec 50° = a
cot 40° = b
We note that sec(θ) = 1/cos(θ) and cot(θ) = 1/tan(θ)
a² - b² = sec²50° - cot²40°
Given that sec(90 - θ) = cosec(θ) where; cosec(θ) = 1/sin(θ), we have;
sec²50° - cot²40° = sec²(90° - 50°) - cot²40° = sec²(40°) - cot²40°
sec²(40°) - cot²40° = cosec²(40°) - cot²40°
Also we have;
cosoc²(θ) = 1 + cot²(θ)
Therefore, we have;
cosoc²(40°) - cot²40° = 1 + cot²(40°) - cot²40° = 1
Therefore, where sec(50°) = a and cot(40°) = b, the value of a² - b² is 1.
Answer:
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Step-by-step explanation:
If you look at a number line and look to the left you can see that -11 it is at the end and -8 is at the begging
Answer:
Step-by-step explanation:
3/2b + 1/5b = 17
First, you would combine like terms
17/10b = 17
Then, you would divide 17 by 17/10
b = 10
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Check:
3/2(10) + 1/5(10) = 17
15 + 2 = 17
17 = 17
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Hope this helps you and Happy Thanksgiving!