Hi,
Δ = 9 - 4 * 1 * 1 = 5
the roots are :
x1 = (3 - √5) / 2
x2 = (3 + √5) / 2
a rough estimate is 26 because 20+2(3)=26
3 pounds of apples are 6.36
19.75+ 2.12(3) = 26.11
10d + 5.50 = x (the total cost)
Answer:
Step-by-step explanation:
take x degree as reference angle
using tan rule
tan x=opposite/adjacent
tan x=6.1/5.1
tan x=1.19
x=1.19
x=49.95
x=50 degree