In a laboratory, a technician combines a salt solution contained in 27 test tubes. each test tube contains 0.06 liter of the solution. if he divides the total amount into test tubes that hold 0.3 liter each, how many test tubes will he need?

We need 6 test tubes

Step-by-step explanation:

We have given that there are 27 test tubes and each contain 0.06 liters of solution

So total amount of solution

Now he divides the total amount into test tubes which contain 0.3 liters each

We have to find the total number of test tubes

So total number of test tubes

As test tubes can't be in fraction so we need 6 test tubes

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions