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Ummm there’s no right triangular
What exactly are we supposed to compute? All that’s provided is data.
Answer:
x = 19
Step-by-step explanation:
(5x+4)+(x-2)+(3x+7) = 180
5x+4+x-2+3x+7 = 180
9x+9 = 180
9x = 171
x = 171/9
x = 19
He drives 55 miles per hour for x hours. You want to multiply the number of hours by his speed , so you have 55x.
Then you want to subtract that from the total miles he has to drive.
The equation is Y = 385 - 55x