Given that Li is making beaded necklaces for each necklace, she uses 27 spacers, plus 5 beads per inch of necklace length.
The equation to find how many beads Li needs for each necklace can be obtained as follows:
A. The input variable is the number of inches of the necklace length (x).
B. The output variable is the number of beads Li needs for each necklace (y).
C. The required equation is given by
y = 5x
The pipe that takes 2.5 hours to fill a pool would fill 1 pool/2.5 hours = 2/5 of a pool per hour. The two inlet pipes together would fill a pool in 1.5 hours, therefore they would fill 1 pool/1.5 hours = 2/3 of a pool in one hour. We can use the subtraction of rates. 2/3 = (rate of the other inlet pipe) + 2/5, 2/3 - 2/5 = (rate of the other inlet pipe), 10/15 - 6/15 = 4/15. The other pipe fills 4/15 of a pool per hour. Since this also means it fills 4 pools in 15 hours, we only need one pool. We divide by 4 to get 3 3/4 hours to fill one pool.
The answer is true because they aren't related varables
Answer:
3/4
Step-by-step explanation:
Distance=speed times time
if they take the same time, we cal the time , t
b=bike speed
w=walking speed
bikedistnace=17=bt
walkdistance=9=wt
b is 4 more than w
b=4+w
we have
17=bt
9=wt
b=4w
ok so
multiply first equation by 9 and 2nd by 17
153=9bt
153=17wt
set equal
9bt=17wt
divide both sides by t
9b=17w
sub b=4+w for b
9(4+w)=17w
distribute
36+9w=17w
minus 9w both sides
36=8w
divide both sides by 8
4.5=w
he walks 4.5kph