9!/(8!*(9-8)!)=9
or just use a calculator and use the nCr function
Answer:
6 days
Step-by-step explanation:
pay 60 = -60
Let d = the number of days
30d - 60 = sister
20d = me
Equation:
30d - 60 = 20d Move 30 to the other side
-30d -30d
-60 = 20d - 30d Combine liked terms
-60 = -10d
-10 -10 Divide
d = 6
C= 2000 + 3(2500)
C= 2000 + 7,500
C= $9,500
Volume=legnth times widht times height
legnth times width=area of base
so
volume=area of base times height for a prism
area of base=160
height=32
volume=160 times 32
volume=5120
volume is 5120 cubic centimeters or
5120 cm^3
On the right side we have st which is the same as s*t or s times t
We want to undo the multiplication that is happening to s, so we have to divide both sides by t
d = s*t
d/t = s*t/t ..... divide both sides by t
d/t = s
s = d/t
Answer: Choice A)
