Answer:
19.21
Step-by-step explanation:
use the formula

and simplify


= 19.21
Answer:
1st option is the answer
Step-by-step explanation:
blue line: slope is 1 and y-intercept is 1; therefore equation is y= x + 1
red line: slope is -1 and y-intercept is -3; therefore equation is y= -x - 3
Missing number is 46 so just shade 46 squares in the grid
Answer:
d. reflect triangle abc across line ab
Step-by-step explanation: