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Alex777 [14]
3 years ago
7

2. Describe two methods to determine whether ratios form a proportion.

Mathematics
1 answer:
Phantasy [73]3 years ago
6 0

Answer:

1. Write both ratios as fractions and reduce them completely. If they are the same fraction, the ratios form a proportion.

2. Write both ratios as fractions. Do the cross products by multiplying the denominator of each fraction by the numerator of the other fraction. If the cross products are equal, the ratios form a proportion.

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What is the percent increase between 1200 grams and 550 grams
makkiz [27]

Answer:118%


Step-by-step explanation: You would subtract 1200 by 550 and put that answer (118) over 1000 and then that would be your percent 118%.


7 0
3 years ago
Find x value for the point that splits segment co in halt point c is located at 4) and point D is located at (3,7)
VLD [36.1K]
Okay to split a segment in half you just need to find the midpoint of the two endpoints.  Mathematically this is just the average of the coordinates of the endpoints which is:

mp=((x1+x2)/2, (y1+y2)/2)

Which in this case is:

mp=((-2+3)/2, (4+7)/2)

mp=(1/2, 11/2)

mp=(0.5, 5.5)

So the x-coordinate by itself is just 0.5, or answer c.
8 0
3 years ago
Bobby wants to go on a school trip that will cost him $250. He comes up with an equation that represents how much he needs to sa
monitta
Yes, Bobby will have enough money if he saves for 9 weeks. You can find this through either substituting w for 9 in the equation, or solving the equation itself. 

Substituting:

25(9)+30
Substitute w for 9. 

225+30
Simplify. 

225+30=255
Solve. 

255 is greater than 250, so yes, he will have enough money saved. 


Solving the equation:

25w+30=250
Original Equation

25w=220
Subtract 30 from both sides. 

w=8.8
Divide both sides by 25. 

The number of weeks he needs is 8.8. When rounding it up, you get 9. 


4 0
3 years ago
Simplify the square root of 320
Pavlova-9 [17]
17.89, is this an option?
5 0
3 years ago
For 23-25, use the table.
alexandr402 [8]
Jon and Gina are different we’re opposite
7 0
3 years ago
Read 2 more answers
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