Some mountains in the alps are very step and have a grade of 42.7%. to the nearest degree, what angle do these mountains make with a horizontal line?

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.

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3

answer:

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21  

-7 + ? = 21

-7 + 28 = 21

hope it

the correct answers are 1, 2, 4, and 5! i just got it right!