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GuDViN [60]
3 years ago
14

Brainliest and five stars to correct answer

Mathematics
2 answers:
Leno4ka [110]3 years ago
8 0
Answer is d the last one

belka [17]3 years ago
3 0
I'm pretty sure its d
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Out of 20 students surveyed, 10 are 7th Graders, 6 are 8th Graders. What percent of the students surveyed are 6th Graders
Elis [28]

Answer:

20%

Step-by-step explanation:

6 0
3 years ago
A body and tackle with a velocity ratio of 5 is used to raise a mass of 50kg through a vertical distance of 20n at a steady rate
matrenka [14]

a. Distance moved by effort = 1 meter

b. Work done by effort = 80 Joules

c. Losses in energy = 18 Joules

<h3>How to determine the parameters</h3>

a. Note that velocity ratio is defined as the ratio of a distance through which any part of a machine moves to the distance moved by its parts

Velocity ratio = distance moved by the effort/distance moved by the body

Where velocity ratio = 5

vertical distance = 20cm

Distance moved by effort = 5 × 0. 20 = 1 meter

b. Formula for work done is given as ;

Work done = Effort × distance moved by effort

Work done = 80 × 1

Work done = 80 Newtons

c. First, let's find the work output

Work output = m g h

Work output = 50 × 9.8 × 0. 20

Work output = 98 Joules

Losses in energy = Work output - work done

Losses in energy = 98 - 80

Losses in energy = 18 Joules

Learn more about work done here:

brainly.com/question/25573309

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7 0
2 years ago
PLEASE LITTERALLY HELP ME!!! IM STRUGGLINGGGG!!!
tangare [24]

Answer:

well you see, I don't care

4 0
3 years ago
(Please correct answers only) (Will mark brainliest)
sergij07 [2.7K]
The answer is B., valid because people were chosen randomly
This would make it a valid survey
Hope this helps!
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8 0
3 years ago
Read 2 more answers
As of october 28th chris has only paid $50 of the $180 senior dues which is due by december 20th chris had to quit his job becau
valentina_108 [34]

Answer:

Step-by-step explanation:

I believe that the best advice in this scenario would be to fully pay off the senior dues and with the $48.56 that is left pay back as many lost books as possible. This would leave you owing $6.44 for lost books which you can ask Chris can ask his parents or work a small side gig to earn that money. The more important payment to make is the senior dues which have an actual due date unlike the lost books and can actually cause you trouble if not paid on time.

6 0
2 years ago
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