Answer:
-15a+d
Step-by-step explanation:
5a-20a+12d-11d
-15a+d
Answer:
90
Step-by-step explanation:
I took the test and 90 gives u the most variability in your outcome so ur answer is more reliable.
Its also 40°30' because the median is also a bisector in isosceles triangle
Answer:
true
Step-by-step explanation:
Answer:
<h2>a = 16</h2>
Step-by-step explanation:
Look at the picture.
The formula of an area of a trapezoid is:

- bases
- height
We have:

Substitute:

<em>divide both sides by 8</em>
