Answer:
option 4
Step-by-step explanation:
using the sine/ cosine ratios in the right triangle and the exact values
cos30° = , sin30° = , then
cos30° = = = ( cross- multiply )
2x = 20 × = 20 × 3 = 60 ( divide both sides by 2 )
x = 30
and
sin30° = = = ( cross- multiply )
2y = 20 ( divide both sides by 2 )
y = 10
y=-|x+1|+1
It's an absolute value function vertically flipped and shifted 1 unit to the left, 1 unit to the the top.
0
D. The pH indicates how acidic or basic a solution is.
The range goes from 0 to 14, with 7 being neutral.
x = 3