Answer: C , triangles reflected across the line Y=X
Explanation: The line Y=X intersects through the origin and has a slope of positive 1, so if you imagine that line on the graph shown, you're able to see how the triangles are reflected across it.
Also, when the X and Y coordinates are "flipped" for each triangle, you can tell that it's reflected across Y=X. For example, the point at the right angle for the red triangle is (1,-1), while the corresponding point on the black triangle is at (-1,1), "flipping" the coordinates.
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Answer:
x=30
Yes, they are complementary
Step-by-step explanation:
The two angles shown add up to the right angle marked. Right angles are 90 degrees. Set up the following equation:
2x°+x°=90
3x°=90
x=30
Complementary angles are two angles that add up to 90°. Since the two angles add up to 90 degrees, they are complementary.
Answer:
-4
Step-by-step explanation:
Well, just add.
Answer:
C
Step-by-step explanation:
River valley provided fertile land and access to water.
Not:
dense forests: hard to navigate, not suitable for ancient civilizations
mountain passes: same reason as above
smooth coastlnes: settlements potentially could be washed away or destroyed. Access to fresh, non-salt water, also was harder than that of settling in river valleys
Answer:
me neather
Step-by-step explanation: