How to solve these type of problems:
1. simplify
2. divide the powers when needed
3. multiply the powers when needed
4. a^-1 = 1/a
hope it helps
Answer:
A) -2/5
Step-by-step explanation:
Note that for a slope, the slope of the line is found by using the equation:
slope = (rise/run).
In this case, find two points. For example, i will use:
(0, 2) & (5, 0). (x = 0, y = 2) ; (x = 5, y = 0)
Note that "rise" = y, and "run" = x. Plug in the corresponding numbers for the corresponding points.
(2 - 0)/(0 - 5) = slope
Simplify
(2)/(-5) = slope
-(2/5) is your answer.
Note that it does not matter where the negative sign is placed.
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Answer:
- 91 meters
Step-by-step explanation:
Sea level is always represented as 0 so if the hiker were to descend to sea level he would go down 91 meters since they are already 91 meters above sea level.
You need to find out how many meters the hiker is from sea level and in this case they are 91 meters above sea level.
You can also write this as an addition problem by saying 91 + -91 = 0
91 is negative since the hiker is descending so they are going down 91 meters.
Answer:
- simplifies to -2x -17 = 5x -10
- x = -1 . . . . the solution
Step-by-step explanation:
-2(x+5)-7=3x+2(x-5) . . . . starting equation
-2x -10 -7 = 3x +2x -10 . . . eliminate parentheses using the distributive property
-2x -17 = 5x -10 . . . . . . . . . collect terms
-7 -2x = 5x . . . . . . . . . . . . . add 10
-7 = 7x . . . . . . . . . . . . . . . . . add 2x
-1 = x . . . . . . . . . . . . . . . . . . . divide by 7