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Troyanec [42]
3 years ago
5

Peter practices violin for a total of 55 minutes over the weekend he practices for 25 minutes on Saturday how many minutes does

he practice on Sunday
Mathematics
2 answers:
xxTIMURxx [149]3 years ago
4 0
It’s simple all you do is subtract 55-25=30 you’re welcome have a good night
Bess [88]3 years ago
3 0

Answer:

30 minutes.

Step-by-step explanation:

55 - 25 = 30

Hope this helped, have a great day/night!

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To test the impact performance of a 10 cm thick gymnastics mat, a 20 kg cylindrical
denis23 [38]

Answer:

A)196J

B)-208J

C)3467J

Step-by-step explanation:

We are given that a 20 kg cylindrical  mass is dropped onto the mat from a height of 1 m above the mat. During the impact,  the cylinder’s vertical velocity reaches zero at the instant the mat has compressed to  only 4 cm thick.

So, The Mat gets compressed by : 10cm - 4 cm = 6 cm=0.06 m

a)

Using Conservations of energy

Potential energy at the top = Kinetic energy at the point before touching the surface

Kinetic energy = mgh= 20 \times 9.8 \times 1 = 196 J

b)

Work done  by the mat do to stop the fall of the cylinder =-mg(h+0.06)=-20 \times 9.8(1+0.06)=-208 J

C)

Work done=\text{Average force} \times \text{ Compression of mat}

208=F \times 0.06

F=3467J

8 0
3 years ago
What additional information do you need to prove △ABC ≅ △DEF by the SSS Postulate?
Fudgin [204]
The answer to this question is answer choice C.

For the SSS postulate, we need 3 pairs of congruent sides. However, in the image, there are only 2 pairs. 

The missing pair in the image is AC and DF. If those are congruent, the triangle can be proven congruent by the SSS postulate.

Hope this helps! :)

~AgentCozmo4, Junior Moderator
7 0
3 years ago
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A factory worker can make 14 products in 45 minutes.what is the workers unit rate
jok3333 [9.3K]
3.2 products a minute.
3 0
3 years ago
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What would be the answer too 900ft2+ 144ft2???
In-s [12.5K]

Answer: 1044ft

Step-by-step explanation:

900ft2 + 144ft2

= 1044ft2 (square root)

1044ft

hope this helps :))

5 0
3 years ago
Need help answering this
Alla [95]
The answer is “=“. Both are different representations of the same fraction.
8 0
3 years ago
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