Answer:
B i worked it out in my head, sorry if i dont get it right
x + 7 = 2(3x - 4) Remove the brackets
x + 7 = 2*3x - 4*2
x + 7 = 6x - 8 Subtract 7 from both sides.
x + 7 - 7 = 6x - 8 - 7
x = 6x - 15 Subtract 6x from both sides
x - 6x = - 15
-5x = - 15 Divide by -5
-5x/-5 = -15/-5
x = 3
Unfortunately, multiplying and dividing decimals this effect does not occur. In some cases, the decimal number even complicates the operatsii.Dlya beginning, we introduce a new definition. We will meet him very often, and not only in this part of uroke.Znachaschaya - is all that is between the first and the last non-zero digit, including the ends. It's only about numbers, the decimal point is not uchityvaetsya.Tsifry included in the meaningful part of the number, are called significant figures. They may be repeated or even be zero.
Answer:
Step-by-step explanation:
x2 - 4x - 12 = 0
x2 - 6x + 2x - 12= 0
x(x - 6) + 2(x - 6) = 0
x + 2 = 0
x = - 2
x - 6 = 0
x = 6
Answer:
C = 2000 + 25 * X
$ 7000
Step-by-step explanation:
We have that the value of the total costs is equal to the fixed costs plus the variable costs.
As fixed costs we have $ 2000 and variable cost we have $ 25 for each unit, that is, the equation for total costs would be:
Let x be the number of toys, then:
C = 2000 + 25 * X
If there are 200 toys, the cost would be:
Replace x with 200:
C = 2000 + 25 * 200
C = 7000
In other words, the cost of producing 200 toys would be $ 7000.
