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romanna [79]
3 years ago
13

Why is a parallelogram not the same type of quadrilateral as a trapezoid?

Mathematics
1 answer:
Liula [17]3 years ago
4 0
A parallelogram has two pairs of opposite sides. A trapezoid only has one pair of parallel sides.
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find the work done by a person pushing a 40 pound box up an incline that is 30 degrees above the horizontal and 100 feet long (i
tankabanditka [31]

The work done in pushing the box is 64000 lb-ft²/s²

<h3>How to calculate the work done by the person?</h3>

Since person pushing a 40 pound box up an incline that is 30 degrees above the horizontal and 100 feet long, the work done, W is

W = mgh where

  • m = mass of box = 40 lb,
  • g = acceleration due to gravity = 32 ft/s² and
  • h = height of incline = LsinФ where
  • L = length of incline = 100 ft and
  • Ф = angle of incline = 30°

So, W = mgh

W = mgLsinФ

So, substituting the values of the variables into the equation, we have

W = mgLsinФ

W = 40 lb × 32 ft/s² × 100 ftsin30°

W = 1280 lb-ft/s² × 100 ft × 0.5

W = 1280 lb-ft/s² × 50 ft

W = 64000 lb-ft²/s²

So, the work done in pushing the box is 64000 lb-ft²/s²

Learn more about work done here:

brainly.com/question/25970931

#SPJ1

3 0
2 years ago
Is there a formula for problems like these? How do I even begin to solve it?
Pachacha [2.7K]
Well, they're saying 9 with an exponet of 2 multiplied by something equals 27..... Hmmm.....
5 0
3 years ago
If 3m+2n=16 and m−2n=0, then what is the value of m?
umka21 [38]

Answer:

m= 4

Step-by-step explanation:

3m +2n= 16 -----(1)

m -2n= 0 -----(2)

From (2):

m= 2n -----(3) (+2n on both sides)

subst. (3) into (1):

3(2n) +2n= 16

6n +2n= 16

8n= 16 (simplify)

n= 16 ÷8

n= 2

subst. n=2 into (3):

m= 2(2)

m= 4

7 0
3 years ago
Annie spent 2.5 hours doing homework. She spent 1/3 of the time on her history project. She spent 3/5 of the remaining time solv
Scilla [17]

Step-by-step explanation:

2.5 hours = 150 min

1/3 of 150 is 50 min, which means she spent 50 min on her history project = 100 min leftover

3/5 of 100 min is 60 min (1 hour) = 40 min leftover

She spent 40 min writing her essay

hope this helps <3

6 0
3 years ago
Read 2 more answers
30PTS PLEASE HELP ME!!!
atroni [7]
A 20x + 60 b 10x + 150 



3 0
3 years ago
Read 2 more answers
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