Answer:
36 oz
Step-by-step explanation:
Get the other options down to 12oz units for their price and then you can compare which one is the cheapest for 12oz.
12oz = $1.99
36oz/3 = 12oz so $2.59/3 = $ .86
48oz/4= 12oz so $3.99/4 = $1.00
60oz/5= 12oz so $4.59/5 = $ .92
So looking at the breakdown, the 36oz one is the cheapest because for that price for a third of it comes out to .86 cents.
=1 I calculated the combine value
The range is:
[−7,7]
{y|−7≤y≤7}
Answer:
6 hours
Step-by-step explanation:
The formula for work is
1/a + 1/b = 1/c
where a and b are the times working alone and c is the time working together
Let x= time for Sydney
x-3 = time for Toni
1 /x + 1/ ( x-3) = 1/2
Multiply by 2x(x-3) to clear the denominators
2x(x-3)(1 /x + 1/ ( x-3)) = 1/2 *2x(x-3)
2( x-3) + 2x = x(x-3)
Distribute
2x-6 +2x = x^2 -3x
Combine like terms
4x-6 = x^2 -3x
Subtract 4x from each side
-6 = x^2 -3x-4x
Add 3 to each side
0 = x^2 -7x +6
Factor
0 = (x-6) (x-1)
Using the zero product property
x-6 = 0 x-1 =0
x=6 x=1
But x cannot =1 because that is less time than together
x=6
Answer:
x=7
Step-by-step explanation:
make the equations equal each other
72=6x+30
subtract 30
42=6x
divide by 6
42/6=7