Answer:
W = 15900 ft.lb
Step-by-step explanation:
From the given information.
Consider y to be the distance from the ground towards the bucket of the cement.
At height y, suppose the bucket is lifted by Δy.
Then, the workdone can be = 500Δy + 0.5(75 - y) Δy
where;
The bucket of the cement = 500Δy
The remaining of the rope = 0.5(75 - y) Δy
However; the workdone (W) can be calculated as:
W = 15000 + 0.5 ( 2250 - 450)
W = 15000 + 900
W = 15900 ft.lb
Answer:
C, HL
Step-by-step explanation:
Since the triangles share a side, they have a congruent leg. Looking at the tick marks, the triangles also have congruent hypotenuses. So, they are congruent by the Hypotenuse Leg theorem.
I think it’s d I could be wrong
Answer:
Step-by-step explanation:
Given it's a regular poligon, we calculate its angles as follows :
- (6-2)*180/6 get rid of parenthesis
- 4*180/6 then multiply
- 720/6 now divide it
- 120 is the measure of one angle and since it's a regular poligon each angle has same measure
Answer:
acute angle
Step-by-step explanation:
<h2>
Find the angle</h2>
-an acute angle is less that 90 degrees
-straight angle is 180 degrees
-right angle is 90 degrees
-obtuse angle is an angle more than 90 degrees but less than 180 degrees
by looking at these definitions and the image of the angle . we can notice that the angle is less than 90 degrees hence its an <u>acute angle </u>
