Answer:
0.0824 (may be incorrect)
Answer:
Step-by-step explanation:
Answer:
A. -2sin(x)sin(0.4x)
Step-by-step explanation:
At x=0, the given expression evaluates to zero.
For x near zero, the given expression is slightly negative. You know this because cos(1.4x) decreases faster than cos(0.6x), so their difference will be negative.
Of the answer choices, you can eliminate C and D because they are not zero at x=0. You can eliminate choice B, because it is positive for values of x near zero. The only viable choice is A:
-2sin(x)sin(0.4x)
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Of course, a graphing calculator can help you figure this out. See the attachment. The given expression is plotted using a solid red line; the answer choice A is plotted using blue dots.
Answer:
To find the area of a triangle, you will times height by base and divide by then divide by two. In this case, the height is 22 and the base is 10. 22 times 10 is 220. You then would divide 220 by two, making your answer 110 cm squared.
Step-by-step explanation: