Answer:
Part A: 6 Part B: Put a line from the top right corner to the bottom left corner. Each triangle's area would be 3.
Step-by-step explanation:
PART A
The formula to find the area for a parallelogram is A = bh (Area = base · height)
A = bh
A = 8 · 3/4
A = 6
PART B
Draw a parallelogram if you need to show work and then just connect the top right corner and the bottom left, or top left to bottom right. If 6 (area of the parallelogram) ÷ 2 (since there is two triangles) = 3, then the area of the triangles has to be 3.
Answer:
Simplifying
5(6.2a + 9.8) = 18
Reorder the terms:
5(9.8 + 6.2a) = 18
(9.8 * 5 + 6.2a * 5) = 18
(49 + 31a) = 18
Solving
49 + 31a = 18
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-49' to each side of the equation.
49 + -49 + 31a = 18 + -49
Combine like terms: 49 + -49 = 0
0 + 31a = 18 + -49
31a = 18 + -49
Combine like terms: 18 + -49 = -31
31a = -31
Divide each side by '31'.
a = -1
Simplifying
a = -1