Slope formula : (y2 - y1) / (x2 - x1)
set 1 : (12,7)....x1 = 12 and y1 = 7
set 2 : (9,6)....x2 = 9 and y2 = 6
now we sub
slope = (6 - 7) / (9 - 12) = -1/-3 = 1/3 <==
Answer: a, c
step-by-step explanation:
if a < 7 or a is less than 7
a.) a < 17 a is less than 17 so that’s true
b.) -a < -7 i’m not sure on this one but i believe no
c.) 3a + 4 < 25
-4 -4
3a < 21
/3 /3
a < 7 which is true
d.) a^2 < 49 i’m also not sure how to cancel out exponents but i hope the two definite answers help
See attached. The trick is to use similar triangles.
Use pythagorians theorem a^2 + b^2 = c^2. 4^+20^ = 20.40 feet. The ladder is 20.40 feet long.