Give the equation of a line which is perpendicular to the given line. y=x+2

y=-x+2

Step-by-step explanation:

Perpendicular slopes must always be reciprocals. So a formula to get perpendicular slopes (right angles) would therefore be y = -x + 2

Hope this helps!

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm