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svlad2 [7]
3 years ago
13

This table represents a proportional relationship. Use the table to identify the constant of proportionality between the ratio o

f the number of laps to the number of swimmers.
A 2-column table with 4 rows. Column 1 is labeled Number of Swimmers with entries 20, 18, 14, 9. Column 2 is labeled Number of Laps with entries 240, 216, 168, 108.

The constant of proportionality is
.

Mathematics
2 answers:
Neporo4naja [7]3 years ago
8 0

Answer:

the answer i 12

Nuetrik [128]3 years ago
5 0

Answer:

12

Step-by-step explanation:

The constant of proportionality in direct variation has this formula with a being the constant of proportionality: a =  \frac{y}{x}

Column 1 has the x-values and Column 2 has the y-values. If you divide the x-values by the corresponding y-values, you will get an a value of 12.

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What is 35+20/-4 times 7=?
saw5 [17]
The answer would be 210 because 20/-4 equals -5 and 35+(-5) equals 30. 30×7 equals 210. Hope that helped :D
6 0
3 years ago
How to solve Which ordered pair is a solution for x − 3y = 1?
babunello [35]
There is no one answer (ordered pair) to this equation and the answer is found by graphing or trying out different values for each variable. Anyway, here are some solutions; (1,0), (4,1), (0,-1/3).
5 0
3 years ago
10 points
marishachu [46]

Answer:

150+12x=630

Step-by-step explanation:

The x represents the amount of months and it is multiplied by 12 because each month costs 12$. 150 have to be paid up front and this added to the monthly fee is equal to 630$

3 0
3 years ago
Use a net to find the surface area of the right triangular prism shown below:
AnnZ [28]
I don't exactly know what a net is, but I can figure out the surface area (maybe). When you put this pattern together, you have to make a couple of assumptions.
First of all the 2 triangles are connected to a base that's 8 by 13. 
Base
The area of the base = 8 * 13 = 104 square feet.

Two Triangles.
The area of any triangle is 
Area = 1/2 b * h
Area = 1/2 *12 * 5
Area = 30 square feet. There are 2 triangles so ...
The total area of both is 60 square feet.

Overlap
Now we come to the tough part.  how big is it from the first dotted line to the second one?
The answer is 5. But why? Well the 5 comes from the the length of the side that has to be covered by this pattern. The 5 is part of the triangle. 

How far across is the dotted line? The answer is 8. Why again? That's the width of the whole prism or pattern.
So the area between the two dotted lines is 5 * 8 = 40

Finally the area over the 12. 
The question is how far is it from the second dotted line to the last boundary? The answer is 12. And it's width is 8
So the area = 12 * 8 = 96

Total area
96 + 60 + 40 + 104 = 300 square feet. 
4 0
3 years ago
Jessica had 140 to spend on 8 books. After buying them she had 12 dollars. How much did each book cost?
Rashid [163]

Answer:

each book was $16

Step-by-step explanation:

140-12=128 divided by 8 = 16

hope this helps!

8 0
3 years ago
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