Answer:
90 arrangements
Step-by-step explanation:
Since there are no repititions of letters, there are unique 10 letters in total.
THe number of arrangements would be 2 permutation 10. We need the formula for permutation. That is:
Now, n = 10 [total] and r is 2, so we have:
So, there can be 90 arrangements
15c+10d that’s the answer
Answer:
(x,y)=(-13,-12)
Step-by-step explanation:
5x - 7y = 19
7x - 7y = -7 Multiply both sides of the equation by -1
Which then gives you :
5x-7y=19 Sum the equations vertically to eliminate
-7x+7y=7 at least on variable
-2x=26 Divide both sides of the equation by -2
X=-13 Substitute the given value of x into the equation 7x - 7y =-7
7 x(-13)-7y=-7 solve the equation for y
y=-12
Thus gives you (-13,-12)
Hope this was useful!!! Sorry if it's wrong.
Answer:
1. 54 2. 2$
Step-by-step explanation:
1. total students= 331
n.o of buses=6
now,
total no of students travelling through bus,
=331-7
=324
now,
324÷6
=54
2.
total money=24$
remaining money= 10$
spent money on pencil= 24-10$
= 14$
now,
7 pencils cost= 14$
1 pencil cost= 14÷7$
=2$
