De has endpoints d 0, 3 and e 0, 12 find the length of de to the nearest tenth

 The length of side DE is 9 units.

Step-by-step explanation:  Given that the co-ordinates of the end-points of DE are D(0, 3) and E(0, 12).

We are to find the length RT of the polygon.

We know that

the length of a line segment with endpoints P(a, b) and Q(c, d) is equal to the distance between the points P and Q.

By distance formula, the distance between P(a, b) and Q(c, d) is

So, the distance between D(0, 3) and E(0, 12) is given by

Thus, the required length of DE is 9 units.

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step-by-step explanation:

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

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