The first angle of a triangle is 30 degrees more than the second angle. The third angle is double the first angle. Find the three angles measures.

22.5 degrees

Step-by-step explanation:

First angle = n

Second angle = x

Third angle = m

n = 30 + x

m = 2(30 + x) = 60 + 2x

60 + 2x + 30 + x + x = 4x + 90 = 180

4x = 90

x = 22.5

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use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

16.9 times 2.85

step-by-step explanation: