Answer: 1.38
Step-by-step explanation:
552
<u>x 25</u>
02760
11040
02760+11040=13800.
then you put your decimal over 4 spots and you take the 2 zeros off the end and get your answer of
<h2>
1.38</h2>
18r^2 - 24r + 42. When you want to express something as squared or with an exponent you put ^ this symbol then the number(s)
Answer:
Step-by-step explanation:
The tangent segment is perpendicular to the diameter, so the triangle is a right triangle (not just based on its appearance). A property of circles is: a tangent is perpendicular to the radius drawn to the point of tangency.
In the right triangle, one leg has length 12.6, and the hypotenuse has length 21.
Apply the Pythagorean Theorem: (leg)^2 + (leg)^2 = (hypotenuse)^2
Oh, and the diameter has length 2x!

9514 1404 393
Answer:
-2cos²(x) +3cos(x) -1
Step-by-step explanation:
Use the "Pythagorean identity" to replace sin²(x).
sin²(x) +cos²(x) = 1
Then ...
2sin²(x) +3cos(x) -3 = 2(1 -cos²(x)) +3cos(x) -3
= -2cos²(x) +3cos(x) -1
Answer: A
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