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fenix001 [56]
3 years ago
8

The formula v=√64h can be used to find the velocity v in feet per second of an object that has fallen h feet. Find the velocity

of an object that has fallen 30 feet. Round your answer to the nearest hundredth.
A) 960 feet/sec
B) 43.82 feet/sec
C) 240 feet/sec
D) 350.54 feet/sec
Mathematics
1 answer:
zhuklara [117]3 years ago
4 0

Answer:

  B)  43.82 feet/sec

Step-by-step explanation:

Fill in the number and evaluate:

  v = √(64×30) = √1920 ≈ 43.82 . . . . ft/s

_____

Of course, √(64h) can be simplified to 8√h. You know that √30 lies between 5 and 6, so the velocity lies between 8·5 = 40 and 8·6 = 48. There is only one answer choice in that range.

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Wich tool is used to measure the lengths of segments when preforming a formal geometric construction
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A ruler as that is the only option that can measure segments

5 0
3 years ago
Evaluate rs + 14s when r = 6 and s = 8
Ivahew [28]

Answer:

160

Step-by-step explanation:

Plug in 6 for r, and 8 for s in the expression:

(r)(s) + (14)(s) = (6)(8) + (14)(8)

Remember to follow PEMDAS. First, multiply, then add:

(6 * 8) + (14 * 8)

48 + 112

112 + 48 = 160

160 is your answer.

~

3 0
3 years ago
What are the the symbolsfor:<br> y-hat, p-hat, y-bar
Vitek1552 [10]
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6 0
3 years ago
Josh is trying to factor the expression
mrs_skeptik [129]

Answer:

a) Josh likely made the negative and positive multiplication error.

b) -20a-8+12b

= -4(5a+2-3b)

Step-by-step explanation:

To check if you are correct, you can always simplify it again:

-4(5a+2-3b)

=-20a-8+12b

Remember:

Negative times negative equals to positive, negative times positive equals to negative!

I hope this is helpful! :)

4 0
2 years ago
Will pick brainlyest help me plz 15 pts
leonid [27]
1.50c + 2.50a = 1100
c + a = 500

multiply the second equation by -1.50
                    
                      1.50c + 2.50a = 1100
-1.50c - 1.50a = -7.50


8 0
3 years ago
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