Describe how to find the sign P plus Q using a number line is P equals -19 and Q equals 12.1 first find on a number line and then count how many stations to the right
To find the sign P plus Q using a number line, follow these steps:
1. Draw a number line with zero in the middle and extend it in both directions.
2. Mark the point -19 on the number line. This point represents the value of P, which is -19.
3. Starting from -19, count 12.1 units to the right. Each unit should be equal in length on the number line.
4. After counting 12.1 units to the right, you will end up at a point on the number line. This point represents the value of Q, which is 12.1.
5. Now, observe the sign of the point where you ended up. If the point is to the right of zero, it is positive. If the point is to the left of zero, it is negative.
6. Since you counted 12.1 units to the right from -19, you will end up on a positive point.
7. Therefore, the sign of P plus Q is positive (+).
To find the sum of P and Q using a number line, follow these steps:
Step 1: Draw a number line with negative and positive numbers. Label the line with intervals, such as every whole number or tenths if necessary.
Step 2: Find the starting point for P. Since P is equal to -19, locate -19 on the number line and mark it with a dot.
Step 3: Determine the direction of movement based on the sign of Q. Since Q is equal to 12.1, which is a positive number, you will move to the right (towards positive numbers).
Step 4: Starting from the dot representing -19, count the number of stations to the right by moving along the number line. Count 12 stations to the right, marking each station with a dot.
Step 5: The final dot you marked represents the sum of P and Q. Find the corresponding number on the number line, which is the sign of P plus Q.
In this case, if P is -19 and Q is 12.1, after counting 12 stations to the right from -19, you should end up at the dot representing -6.9. Therefore, the sign of P plus Q is -6.9.