9t-6-6t=6 -- add 6 to both sides
9t-6t=12 -- combine like terms
3t=12 -- divide by 3
t=4
Alright, so we'd use the combinations with repetition formula, so we choose from 4 schools to distribute to and distribute 8 blackboards. It's then
( 8+4-1)!/8!(4-1)!=11!/(3!*8!)=165
For at least one blackboard, we first distribute 1 to each school and then have 4 blackboards left, getting (4+4-1)!/4!(4-1)!=7!/(4!*3!)=35
Answer:
KL=2
Step-by-step explanation:
JK+KL=JL
3x+x+1=5
4x=5-1
4x=4
x=1
KL=x+1
KL=2
Let's put it all into minutes, and then solve. 4 * 60 + 12 = 252 minutes.
252 / 80 = 3.15.
3.15 * 100 = 315 = 52.5% of the trip.
315 / 52.5 = 6
6 * 100 = 600 minutes
600 / 60 = 10 hour road trip.
Best answer me please!
Answer:
Multiplying by 1 does not change the ratio
Step-by-step explanation:
Multiplying a/b by c/c gives the equivalent ratio (ac)/(bc) because c/c is 1, the multiplicative identity element. Multiplying by 1 does not change the ratio.