The simplified version of this expression is -4x.
Work
1. 1x-7x-(-2x)
2. 1x-7x+2x
Now just combine the terms.
3. -6x+2x
4. -4x
If you would like to solve the system of equations, you can do this using the following steps:
2x + 3y = 40
-2x + 2y = 20
____________
2x + 3y - 2x + 2y = 40 + 20
5y = 60 /5
y = 60/5
y = 12
<span>2x + 3y = 40
</span>2x + 3 * 12 = 40
2x + 36 = 40
2x = 40 - 36
2x = 4
x = 4/2
x = 2
(x, y) = (2, 12)
The correct result would be <span>d. x = 2, y = 12.</span>
Answer:
The error is between the given and step 1
Step-by-step explanation:
the negative wasnt distributed to the 4x-3.
it would have been 8x-4x+3=5
Answer:
Tree diagrams are most effective for complex probability calculations with multiple AND statements
Step-by-step explanation:
The given statements truths are;
A probability calculation can be calculated by using more than one model, which are dependent on the given parameters which can be either a graphical model such as a tree diagram, or an analytical model such as the systematic list model
A systematic list model is one that lists the possible outcomes of simple events
Area models are used for the representation of simple probabilities
Tree diagram models are helpful in graphically displaying complex probabilities, to aid visualization of the solution.
That's the answer so i dont know how you do it!! Thats how i do it