Answer:
Step-by-step explanation:
1) Eliminate parentheses:
0.1x +18.8 = -4 +2x
22.8 = 1.9x . . . . . . . . . add 4 - 0.1x
12 = x . . . . . . . . . . . . . divide by 1.9
__
2) Eliminate parentheses:
-16 +4x = 0.8x +12.8
3.2x = 28.8 . . . . . . . . add 16 - 0.8x
x = 9 . . . . . . . . . . . . . .divide by 3.2
_____
<em>Comments on the solutions</em>
The expression we add in each case eliminates the constant on one side of the equation and the variable term on the other side. That leaves an equation of the form ...
variable term = constant
We choose to eliminate the smaller variable term (the one with the coefficient farthest to the left on the number line). Then the constant we eliminate is the on on the other side of the equation. This choice ensures that the remaining variable term has a positive coefficient, tending to reduce errors.
__
You can work these problems by methods that eliminate fractions. Here, the fractions are decimal values, so are not that difficult to deal with. In any event, it is good to be able to work with numbers in any form: fractions, decimals, integers. It can save some steps.
Answer:
What??
Step-by-step explanation:
Answer:
The answer is true.
Step-by-step explanation:
Given the statement
The locus of points idea allows you to define objects in terms of points and given distances.
we have to tell the statement is true or not.
Like, in a circle
The locus of points is a circle whose center is the given point and radius is the given distance.
Example: The locus of points in the plane equidistant from a given point in 3-d space equidistant from a given point is a sphere.
The word locus points the position which obey a certain rule and relates with distance and points.
Hence, The locus of points idea allows you to define objects in terms of points and given distances.
Therefore, true statement.
Answer: -15 because it is <em>on the opposite side of the number line.</em>
Tenth 32.7
Hundredth 32.70
One 33