You can use any letter but when you label it x you find x
Answer:
B is your answer to this question.
Step-by-step explanation:
Answer:
All real numbers; the simplification is described below.
Step-by-step explanation:
5(- 3x - 2) - (x - 3) = -4(4x + 5) + 13
Let's keep in mind PEMDAS (the order of operations) to simplify and solve this. First, we'll distribute inside each set of parenthesis!
5(-3x) + 5(-2) -1(x) -1(-3) = -4(4x) -4(5) + 13
See how we've taken the outer term on the outside of the parenthesis and multiplied it to each term inside the parenthesis. Simplify further.
-15x - 10 - x + 3 = -16x - 20 + 13
Now we can combine like terms! I will bold the terms I am combining.
-15x - 10 - x + 3 = -16x - 20 + 13 (combining the x terms on the left)
-16x - 10 + 3 = -16x - 20 + 13 (combining the constants on both sides)
-16x - 7 = -16x - 7
Aha! It looks like we have an equation that's literally equal to itself. If we were to simplify this, or put in any number, we'd get that number equals itself. For example:
-16(1) - 7 = -16(1) - 7
-16 - 7 = -16 - 7
-21 = -21
Any number you put in here will make the equation true, so these lines must be the same line. That means the solution is all real numbers.
Answer: 14 cans
Step-by-step explanation:
Given, Total area to paint = 400 square meters
approximately 3.28 feet in a meter.
So, 400 square meters = 400 x (3.28)² square feet
i.e. Total area to paint = 4303.36 square feet
One gallon of paint requires for every 300 square feet.
One liter contains approximately 0.264 gallons
Then, One gallon = 
So, 3.78 liters paint requires for every 300 square feet.
Paint requires for each square feet = (3.78)÷(300) liters
Total paint required = (Total area to paint ) x (Paint requires for each square feet)
= (4303.36)x (3.78)÷(300)
≈54.22 liters
Each can contains 4 liters of paint.
Smallest number of cans required = (Total paint required )÷ 4
=(54.22 ) ÷ 4
= 13.55≈ 14
Hence, 14 cans are required .
