A lot, 1:6 + 3:4 +3 = .116789465 hope this helps....
Consider this option:
1. initial_area_sq=a²=81 (where a - the length of the side), it means, that a=9 cm.
2. according to the condition new_a=a+7=9+7=16 cm.
new area_sq=(new_a)²=256.
3. new_area_sq / initial_area_sq = 256/81≈3.160494.or 316.0494%.
Answer:By definition, perpendicular line are two lines that intersect at right angles. In other words, the angle made by two lines should be 90°. Therefore, the use of distance formula does not help because it only tells you if the sides are equal. It does not tell you about the intercepted angle.
A technique that can help you to know if two straight lines are perpendicular is is you find their slopes. Let's say the slope of line 1 is m1 and the slope of line 2 is m2. If m1*m2 yields a product of -1, then the lines are perpendicular. This is because if m1 is the negative reciprocal of m2, the lines are perpendicular. But if m1=m2, the lines are parallel, meaning they don't intersect at all.
Therefore, the answer is: Find the slopes and show that their product is -1.
hope it help
7.5 what? what is the conversion supposed to be?
Answer:
62.5
Step-by-step explanation: