The prime factorization of the numerator, 315, is 5 x 3 x 3 x 7. That of the denominator, 1575 is 5 x 5 x 3 x 3 x 7. To convert the fraction to its lowest form, cancel all the factors that appear to both the numerator and denominator. We will be left with 1/5.
8x - 9y = 11 (subtract 8x from each side)
- 9y = -8x + 11 (divide -9 from each side)

y =
D.
Answer:
x ≈ 17.1 m
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
x² = 9² + 14.5² = 81 + 210.25 = 291.25 ( take the square root of both sides )
x =
≈ 17.1 m ( to 1 dec. place )
1/4 = 2/8
7/8 - 1/4 = 7/8 - 2/8 = (7-2)/8 = 5/8
Answer: 5/8