The answer to question 1 is B
the answer to question 2 is B
Answer:
Step-by-step explanation:
subtract 160 from both sides, you get -178, 2d divided by -178 is -89 so you get d=-89.
The rule of an arithmetic sequence:
- first term
- a difference 
We have:
substitute:
Answer: f(n) = -3n + 23
We can use the formula for finding the length or magnitude of line joining two points.
Length = √((x2-x1)² + (y2-y1)²)
The points joining the line are C (-1,4) and D (2,0)
Length = √((2+1)² + (0-4)²)
= √((3²) + (-4)²)
= √ (9+16)
= √25
= 5 units
I am not 100% credible for this answer if it is incorrect, I do apologize.
55miles / 60min = 0.91
0.91 x 40min = 36.66
The answer is: about 37 miles in 40min.
