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Ad libitum [116K]
4 years ago
6

Which pairs of ratios form a proportion? Choose all that apply.

Mathematics
2 answers:
Anna71 [15]4 years ago
8 0

Answer:

Step-by-step explanation:

He is right I got a 100%

vekshin14 years ago
7 0
B and C are both the correct answers.
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Just divide 1372.75 by 47.5 which is 28.9
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3 years ago
A chain 27 feet long whose weight is 95 pounds is hanging over the edge of a tall building and does not touch the ground. How mu
bazaltina [42]

Answer:

Work done = 2,565 lb-ft

Step-by-step explanation:

The density of the chain in lb/ft  is equal to

\frac{95}{27} lb/ft

Total Work done is equal to the summation of  work done up to the top of building.

We will use integration for this evaluation.

The mathematical relation is as follows

\int\limits^{40}_0 {X} \, pdx

where "p" is the density

Substituting the given values, we get

\frac{95}{27} \int\limits^{27}_0 {X} \, dx\\\frac{95}{27}  X^2\int\limits^{27}_0\\ \frac{95}{27}  {27^2 - 0^2}\\\frac{95}{27}  * 27 * 27\\95* 27\\= 2,565

Work done = 2,565 lb-ft

6 0
3 years ago
Judy is trying to stack books on a shelf that is 20 inches tall. If each book is 4/5 inches thick, how many
Leviafan [203]
49 because she can stack more ty
5 0
3 years ago
What is the solution to the following equation x+y=6 x-y=2
Lelechka [254]
X+y = 6
x-y = 2

Add both equations, 
2x = 8
x = 4

Substitute it in equation 1, 
4+y = 6
y = 6-4 = 2

In short, x = 4 & y = 2

Hope this helps!
4 0
4 years ago
Five times the difference of a number and 8 is 45.
Luda [366]
<span>The question is requiring that you write the given word problem expression as a mathematical expression. Let the required number be x, then the difference of the number and 8 is x - 8. Then, five times the difference of a number and 8 is 5(x - 8) = 45</span>
4 0
3 years ago
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