Answer:
54.2 mph
Step-by-step explanation:
Since the drivers leave at the same time and travel in directions 90° from each other, their separation speed can be found using the Pythagorean theorem. Let c represent Cynthia's average speed. Then (c-10) will represent Tim's average speed. Their combined separation speed is 70 miles per hour, so we can write ...
70² = c² +(c -10)²
4900 = 2c² -20c +100 . . . . eliminate parentheses
c² -10c -2400 = 0 . . . . . . . . divide by 2; put in standard form
(c -5)² -2425 = 0 . . . . . . . . . rearrange to vertex form
c = 5 ±5√97 . . . . . . . . . . . . solve for c, simplify radical
c ≈ 54.244 ≈ 54.2 . . . . . . . use the positive solution
Cynthia's average speed was 54.2 miles per hour.
Answer: the second answer 5p
Step-by-step explanation:
5xP is the same as 5x7 and 5x7 is equal to 35
My answer -
3 2/3
Wow you have allot of cats LOL!!!
P.S
Have an AWESOME LGBT DAY !!! :)
Answer:
The last answer is correct.
Step-by-step explanation:
The second option ! 2.54 - 2.3 = 0.24
