Answer:
20/21.
Step-by-step explanation:
tan X = opposite side / adjacent side
= 20/21.
You can use this memory aid for the 3 main trigonometric ratios:
SOH-CAH-TOA:
SineOppositeHypotenuseCosineAdajacentHypotenuseTangentOppositeAdjacent.
Answer:
206.
Step-by-step explanation:
Each person will receive 618 / 3
= 206 cookies.
2 and 3
Because 11/4 as a mixed number is 2 3/4 its closer to 3 and close to 2.
So it lies between 2 and 3
Answer:
5=NxC divided by 1/4 ( don't have division sign on computer)
Step-by-step explanation:
First we now that it will start with 5=, because it says "5 is..." then we see that we have to multiply the number by c, sense it just says "...a number c" without an action so we assume its multiplication. Finally we divide NxC by 1/4 to fine one fourth of a number c, which equals five.
Answer:
Step-by-step explanation:
GIVEN: In a 
mile race, Janet covered the first 
miles at a constant rate. She then speed up and rode her bike the last 
miles at a rate that was 
miles per minute faster. Janet's overall time would have been minutes faster had she ridden her bike the whole race at the faster pace.
TO FIND: What was Janet's average speed (in miles per minute) for the whole race?
SOLUTION:
let the speed of Janet in first 
speed of Janet's bike in last 
total time taken by Janet,
Time taken if Janet rides whole race at faster pace 
As, Janet's overall time would have been 
faster had she ridden her bike the whole race at the faster pace.
on solving we get
Average speed 
Average speed 
Therefore average speed of Janet was
