Answer:
10
Step-by-step explanation:
The number of different ways that 2 lights can be chosen from 5 is ₅C₂. Use a calculator or find the value manually:
₅C₂ = 5! / (2! (5−2)!)
₅C₂ = 5! / (2! 3!)
₅C₂ = 5×4×3×2×1 / (2×1 × 3×2×1)
₅C₂ = 5×4 / 2
₅C₂ = 10
Hello,
A good first step to take would be to calculate how much of a barrel John and Mary can drink together in 1 day.
If John can drink 1 barrel in 6 days, then every day he can drink 1/6 of a barrel.
If Mary can drink 1 barrel in 12 days, then every day she can drink 1/12 of a barrel.
Every day, the total that John and Mary can drink will be (1/6) + (1/12) = (1/4) of a barrel.
If we want to know how many days it will take for them to drink 1 barrel of water together, and they drink 1/4 of a gallon every day, we do
(1) / (1/4) = 1 * (4/1) = 4 days
It will take 4 days for John and Mary to drink 1 barrel together.
Hope this helps!
<em>Answer:</em>
<em>The answer is 83</em>
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<em>Hope this helps:3</em>
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Answer:
Step-by-step explanation:
Given
Required
Solve for s
Multiply both sides by 4
Open bracket
Subtract 300 from both sides
Divide both sides by 3
Split
12.99+2.50=15.49
20.00-15.49= 14.51
X=CD
Y=Birthday card
Z=total
L=money left
X+Y=Z
20-z=L
(I hope this helps at least a little?)
