Answer:
134°
Step-by-step explanation:
since BD bisects <em>L</em><em> </em>ABC,
x/2 + 17 = x - 33
=> multiply by 2, we find:
x+34=2x-66
x-2x=-66-34
-x = -100
x = 100
m <em>L</em><em> </em>DBC = x-33 = 100-33 = 67°
so, m <em>L</em><em> </em>ABC = 2 × m <em>L</em><em> </em>DBC =
2 × 67° = 134°
Answer:
180 ft2
Step-by-step explanation:
First solve for the area of the trapzeoid using formula:
A= a+b/2xh
10+18x6/2
A= 84 ft2
Then solve for the rectangles B and C:
12x4= 48
48x2 (because theres two rectangles) which equals 96
Combine the two to get the total area:
96+84= 180
2(6ft x 8ft) for the top and bottom
2(6ft x 3ft) for short sides
2(8ft x 3ft) for long sides
add that all together for the surface area
I have no idea how to explain it so you would understand it, but just know that you need to have factors of the third number (40(with no variables)) be equal to the second number (-14x(Which only has a variable (not squared)))
Therefore a factor would be -10 and -4, since -10*-4=40 and -10+(-4)= -14
With these two numbers you can set it up so that it's like this;
(x-10)(x-4)
Having this, you now have 2 equations;
x-10 = 0
and
x-4=0 (Don't ask why)
So now you solve for x, making it 10 or 4