5. Three sides of a triangle have sides of length 6 inches, 8 inches, and 10 inches. One the ratio of the sides of the triangle is 6:8:10. This ratio can be simplified to 3:4:5.
a. How was the ratio simplified from 6:8:10 to 3:4:52
b. Another triangle also has side lengths in a ratio of 3 : 4:5. The largest side of the
triangle is 30 inches. What is the perimeter of the triangle?

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check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17