IT'S URGENT PLZZZZZZZZZ HELP SOMEONE HELP PLZZZZZZZZZZZZZZZ I NEED IT PLZZZZZZZZZZZZZZZZZZ!!!

Answers

Answer 1

Answer: At start:   PE only

At end: KE and energy lost to friction

PE = KE + E
E = PE - KE
    = mgh - (1/2)mv^2
    = (40)(9.8)(12) - (.5)(40)(10)^2
    = 2704J

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Could someone please help me

Answers

The answer is A
2l+3=39

Write expression using a positive exponent14. 4⁻¹
15.5⁻³
16. -6⁻²
17 -3⁻³
18 3⁻⁵
19 10⁻⁴
20 p⁻¹
21 a⁻¹⁰
22. d⁻³
23 q⁻⁴
24. b⁻¹⁵
25 r⁻²⁰

Answers

14. 1/4
15. 1/5³
16. -1/6²
17. -1/3³
18. 1/3^5
19. 1/10^4
20. 1/p
21. 1/a^10
22. 1/d³
23. 1/q^4
24. 1/b^15
25. 1/r^20

just write them as fractions

How many times does 2 go into 80

Answers

40

2 x 40 = 80
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IGNORE
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2 goes into 80 40 times

Simplify p8/p2
can you help me with this question...anyonnnneee...????

Answers

p6 is the answer,,,,,,,,,,,,,,,,,,,,,,,,,,,,

In the given figure , if AB l BD , then the value of x is

Answers

In the figure as we can see -

Angle 32 = Angle DAB (vertically opposite angles)

Angle ABD = 90 degrees

And we know that,

$Sum$ $of$ $all$ $angles$ $of$ $triangle$ $=180$ $degrees$

So,

$32+90+x+14=180$

$136+x=180$

$x=180-136$

$x=44$ $degrees$

$x+14+90+32=180\n x=44$

What is 791=1/2h (26.5+30)

Answers

Following the order of PEMDAS, start with what's inside of the parenthesis, adding 26.5 with 30 ---> 791 = 1/2h(56.5)
You need to get h on one side of the equation by itself. To do this, divide the whole equation by .5 (which is the same as 1/2), canceling out the 1/2 on one side of the equation. 791/.5 = 1/2h(56.5)/.5 ----> 1582 = h(56.5)
Next, divide the entire equation again by 56.5. 1582/56.5 = h(56.5)/56.5
---> 28 = h
Your final answer is h = 28. To check this, plug 28 into the equation where the value h is.

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Emily has a coupon for 20 percent off her purchase. She finds a backpack she likes on the discount rack. It’s original price is $60, but everything on the rack comes with a 30 percent discount. Emily says, “thirty percent and twenty percent make fifty percent so ur will cost $30. Is emy correct?