Gallons Cost, in of Gas Dollars
1
2
4
10
1.25
2.50
5.00
12.50
15.00
25.00
?
20
What value is missing from the table?

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

a

step-by-step explanation:

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what statement? is there an image?