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judywilkerson1114
30.05.2021 •
Mathematics
Please help with this. I only need help with the first question I have the second one figured out,
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Ответ:
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Explanation:
Refer to the diagram below. I've marked up the figure with various angles to point out the angles we'll be working with.
angle XYZ = 68 in greenangle WXZ = 71 in redangle WZX = unknown, in blueTo make things a bit simpler in terms of notation, and to match up colors with variable letters, I'm going to use the following
R = red angleG = green angleB = blue angleNotice how the two red angles I've marked up are alternate interior angles. This works because WX is parallel to ZY. Also notice that the red and blue angles combine to form the angle WZY, which is adjacent to angle XYZ in green.
For any parallelogram, the adjacent angles always add to 180.
(angle WZY) + (angle XYZ) = 180
(blueAngle+redAngle) + (greenAngle) = 180
(B+R) + (G) = 180
(B+71) + (68) = 180
B+139 = 180
B = 180-139
B = 41
The blue angle is 41 degrees, which means angle WZX is 41 degrees
Side note: Your steps and answer to problem 11 are correct. Nice work.
Ответ:
Loss percentage = 40% (Approx)
Step-by-step explanation:
Given:
Cost price of home = $182,000
Sales price = $110,000
Find:
Loss percentage
Computation:
Loss = Cost price - Sales price
Loss = $182,000 - $110,000
Loss = $72,000
Loss percentage = [Loss / Cost price]100
Loss percentage = [72,000 / 182,000]100
Loss percentage = 39.5604
Loss percentage = 40% (Approx)