Answer:
x = 11.7
Step-by-step explanation:
We have the following equation: -4.5(x-8.9)=12.6
First we divide both parts of the equation by -4.5
Then: (-4.5(x-8.9))/-4.5 = 12.6/-4.5
We get: (x-8.9) = 2.8
Then, solving for x:
(x-8.9) = 2.8 -> x = 2.8 + 8.9 = 11.7
The solution is: x = 11.7
Answer:
(M)_a = -8171 lb-ft
Step-by-step explanation:
Step 1:
- We will first mark each weight from left most to right most.
Point: Weight: Moment arm r_a
G_3 W_g3 = 169 30*Cos(75) + 4.25
G_2 W_g2 = 220 30*Cos(75) + 2.5
G_1 W_g1 = 1500 10*cos(75)
Step 2:
- Set up a sum of moments about pivot point A, the expression would be as follows:
(M)_a = -W_g3*(30cos(75) + 4.25) - W_g2*(30*Cos(75) + 2.5) - W_g1*10*cos(75)
Step 3:
- Plug in the values and solve for (M)_b, as follows:
(M)_a = -169*(30cos(75) + 4.25) - 220*(30*Cos(75) + 2.5) - 1500*10*cos(75)
(M)_a = -2030.462559 -2258.205698 - 3882.285677
(M)_a = -8171 lb-ft
Answer:
112
Step-by-step explanation:
12/3=4
4*30=120
120+120=240
240/20=12
--10^2=100
100+12=112
112
Answer:
167º
Step-by-step explanation:
The interior angles in an n-gon add up to 180(n-2). So, the interior angles in a 28-gon add up to 180(28-2)=180(26)=4680. To find out the measure of one angle divide 4680 by 29. 4680/28 is about 167.
The answer is A according to the answer and the sheet
