3 years ago

10

Mathematics

1 answer:

wlad13 [49]3 years ago

3 0

Not sure but could be C

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A 25 kg rock , is raised to the top of a hill 10 m high. What is the PE of the rock ?

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$Potential \: \: Energy =(mass) \times (gravity \: acceleration) \times (height) \\$

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If gravity acceleration is 10 :

$PE = 25 \times 10 \times 10$

$PE = 2500$

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If gravity acceleration is 9.8 :

$PE = 25 \times 9.8 \times 10$

$PE = 25 \times 98$

$PE = 2450$

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Fie triunghiul ABC cu unghiul A=90* a) Daca AB= 4 cm si unghiul B=60*, aflati unghiul C, AC,BC; b) Daca AC=12cm sin sinB=0,6 , a

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-4(2x + 4) > 8x + 64

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Hello there I hope you are having a great day :)

Your Question, -4(2x + 4) > 8x + 64 Solve for X

1) Expand -8x-16>8x+64

2) Add 16 to both sides -8x-16+16>8x+64+16

3) Simplify -8x>8x+80

4) Subtract 8x from both sides -8x-8x>8x+80-8x

5) Simplify -16x>80

6) Multiply both sides -1 (Reverse the inequality) (-16x) (-1) >80 (-1)

7) Simplify 16x<-80

8) divide both sides by 16 16x/16 < -80/16

9) Simplify x < -5

This should be your answer x < -5

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The difference between three times a number and 15 is equal to 6. Find the number

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15+6=21
21÷3=7
answer
3×7-15=6

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