Error is between steps 4 and 5. It should say:
Step 4: -9x < 27
Now divide by -9
Step 5: x > -3
Note that the inequality changes direction.
When you mean multiply or divide an inequality by a negative number, the inequality changes direction.
For example:
4 < 5
Multiply by -1:
-4 > -5
Another example:
-5 < 0
5 > 0
Answer:
Meters are used to measure bigger objects or longer distances, such as the depth of a pool or length of a hallway. Kilometers are the longest unit of metric measurement. The abbreviation for kilometers is km (for example, 12 km). There are 1,000 meters in a kilometer.
Step-by-step explanation:
Answer:
30 1/10
Step by step explanation:
71/2-5 2/5= 30 1/10
30 1/10 divided by a (also know as 1) = 30 1/10
The length of a light wave is 3.7 x 10^-6 in scientific notation
