Answer:
≈ 14.6%
Step-by-step explanation:
percentage increase is calculated as
× 100%
increase = 2.75 - 2.40 = 0.35 , then
percentage increase = × 100% ≈ 14.6% ( to the nearest tenth )
Triangle & semicircle
4x+2=5x-6
4x-5x=-6-2
-x=-8
therefore, x=8
5x² - 9x + 45 = 0
Δ = b² - 4.a.c
Δ = (-9)² - 4 . 5 . 45
Δ = 81 - 4. 5 . 45
Δ = -819
There's no real root.
