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B<span>oth triangles are 30 60 90 triangles.
Perhaps the way to prove this is by showing that (AD/BD) and (AD/ A1D) and (A1 A / AB) all equal (2 / Sq root (3)) = 1.155</span>
Answer:
area = 105 hm2
Step-by-step explanation:
area = (base1 + base2) * heigth / 2= (14 +16)*7 / 2 = 105 hm2
Answer:
y=-4x-5
Step-by-step explanation:
Answer: -1/9
Explanation: Perpendicular lines have <em>negative</em> reciprocal slopes.
A negative reciprocal slope is a fancy way of
saying flip the fraction and change the sign.
Notice that our slope is an integer.
We can turn it into a fraction by putting it over 1.
So we have 9/1.
A line perpendicular to this would be a negative reciprocal.
So flip the fraction, giving us 1/9, and change the sign to get -1/9.
