A construction crew wants to hoist a heavy
beam so that it is standing up straight. They
tie a rope to the beam, secure the base, and
pull the rope through a pulley to raise one
end of the beam from the ground. When
the beam makes an angle of 40 degrees with the
ground, the top of the beam is 8 ft above
the ground.
Th e construction site has some telephone
wires crossing it. Th e workers are
concerned that the beam may hit the wires.
When the beam makes an angle of 60 degrees with
the ground, the wires are 2 ft above the top
of the beam. Will the beam clear the wires
on its way to standing up straight?
<span>Math - Steve Thursday, April 16, 2015 at 6:22pmwe see that the length of the beam is
8/sin40 = 12.45 ft
At 60 degrees, the top is
12.45sin60 = 10.78 ft high
So, the wire is 12.78 ft up.
Since the beam is only 12.45 ft long, it will not touch the wires.</span>
In their last game, the basketball team score of 3- point shots is 8
<u>Solution:</u>
Given, In their last game, the basketball team scored a total of 86 points.
They made a total of 39 two-point basketball and three-point baskets
We have to find how many three-point shots did the team make?
Now, let the number of three – point shots be "n", then number of two point shots will be 39 – n.
Now, we know that, total score = score of two point shots + score of three point shots
86 = 2 x number of two point shots + 3 x number of three point shots
86 = 2 x ( 39 – n ) + 3 x n
86 = 78 – 2n + 3n
3n – 2n = 86 – 78
n = 8
Hence, they score of 3- point shots is 8
Answer:
Karen got 20 hits.
Step-by-step explanation:
1) Take 20 and divide it by 45
2) The answer is 0.444
The answer would be that she can paint 240 square feet in one hour!
Answer:
sorry i dont know i have a quiz and i need points for it, sorry again
Step-by-step explanation: