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uysha [10]
3 years ago
10

For each graph, determine whether x and y are proportional.

Mathematics
1 answer:
Aloiza [94]3 years ago
8 0
The answer to this question is graph 3 :)) it is
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Variable y varies directly with x2, and y = 96 when x = 4.
lakkis [162]
Direct variation is y = kx, where k is the constant of variation.
 But now it says y varies directly with x2 (or 2x), so now the x in the equation is 2x.

The equation is y = k(2x)
 Now you find k.
y = 96 when x = 4.
(96) = k(2*4)
96 = k(8)
k = 12
 
The equation is now y = 12(2x)
To find the value of y when x=2, plug 2 into the equation you made. y = 12(2*2) y = 48
_________________
Now it's with a "quadratic variation," which is the same thing except x is squared.
The equation is y = kx^2
 
But y varies directly with x2 (same thing as 2x), so now it's y = k(2x)^2.
 
Now you find k by substituting y and x values that were given.
y = 180 when x = 6
(180) = k(2*6)^2
180 = k(12)^2
180 = k(144)
k = 1.25
k, 1.25, is the constant of variation.
4 0
3 years ago
Simplify this expression 16+28÷2-6/10-4*2
CaHeK987 [17]

Answer:

12

Step-by-step explanation:

16+14-6/10-8

30-6/2

24/2

12

5 0
4 years ago
Read 2 more answers
Consider two stocks. Stock 1 always sells for $10 or $20. If stock 1 is selling for $10 today, there is a .80 chance that it wil
Hitman42 [59]

Answer:

On stock 2 will be has an average sell of $50 for higher price.

Step-by-step explanation:

stock 1 of $10 (today)+ $10 (80% chance tommorow)=$20 stock sell price and for $20(today)+$20(90% chance tommorow)= $40 this two final of price for stock 1.

Stock 2 of $10 (today)+$10(90% chance tommorow)= $20 and of $25(today)+$25(85% chance tomorrow)= $50 this two for final of it's price for stock 2.So as for Stock 2 has the average sell higher price.

Hope this helps you

5 0
3 years ago
6.02 is what percent of 67.5?
liraira [26]
I hope this helps you

6,02 %?= 67,5

602.?= 67,5

?= 67,5÷602

?=0,112
7 0
4 years ago
What is the value of |−25|? (1 point)
REY [17]

Answer:

25:)

Step-by-step explanation:

4 0
3 years ago
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