Answer:
x = 12
Step-by-step explanation:
5y+2(3y-1)=xy-(y-2) =
Distribute and simplify
5y+6y-2=xy-y-2 =
Simplify and combine like terms
11y-2 = xy - y - 2 =
Add 2 to both sides and add y to both sides
12y = xy
Divide both sides by y
12 = x
The easiest way to start this problem is to note the number of liters in the barrel right now.
That's x
You add 6 liters to that amount
You get x + 6
From that y liters are lost.
Now your total is
x + 6 - y.
If you switch the order (which you should) you get
x - y + 6
Answer: A
Answer:
Store C
Step-by-step explanation:
store a is selling 10 pencils for $2.50
$2.50 divided by 10 is 25 cents
so the price for store a is 25 cents per pencil
store b is selling 50 pencils for $6.00
$6.00 divided by 50 is 12 cents
so the price for store b is 12 cents per pencil
store c is selling 100 pencils for $8.25
$8.25 divided by 100 is 8.25 cents
obviously you can't give someone .25 cents so round it down to 8
so the price for store c is 8 cents per pencil
store d is selling 250 pencils for $21.25
$21.25 divided by 250 is 8.5 cents
which rounds up to 9 cents per pencil
Store c has the lowest price for one pencil
Answer:
91.3 in³
Step-by-step explanation:
The volume of a pyramid can be found using the formula ...
V = (1/3)Bh
where B represents the area of the base, and h represents the height.
Since the base is square, its area will be the square of the side length, so the volume is ...
V = (1/3)·(7.4 in)²·(5 in) ≈ 91.3 in³