Answer:
10
Step-by-step explanation:
3 x 5 = 15 so 2 x 5 = 10
Answer:
36 is the final value for the equation you posted
Step-by-step explanation:
We are told that = 3 and = −2.
Let's plug these values into the equation.
= (5 ( − 2) + (2 − )^2)
= (5 (3 − 2(−2)) + (2 − 3)^2)
= (5 (3 + 4) + (−1)^2)
= (5 (7) + 1)
= 35 + 1
= 36
Answer:
Part I: cot(15 degrees) = cot(45 - 30)
Part II: Evaluation is below
Step-by-step explanation:
<em>Everything is done in degrees</em>
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Two angles that differ by 15 degrees that is easy to evaluate is 30 degrees and 45 degrees. The cot(15 degrees) = cot(45 - 30) = 1/tan(45-30) = (1+tan45tan30)/(tan30 - tan45) = (1+ sqrt(3))/(sqrt(3) - 1)
We rationalize this by multiplying 1+ sqrt(3) in the top and bottom, getting:
(4 + 2sqrt(3))/2 = 2 + sqrt(3)
I hope this helps! :)
You divide 22 by 10 (2.2) and then multiply that by 3 to get 30%, which is 6.6. Then, you divide 2.2 by 2 to get 1.1, which is 5%. After this you just add them up to get the answer as 7.7.
Also, if you have q calculator, you can do it the short way and do 22 × 0.35 = 7.7
