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3 years ago

9

Angelica calculated the distance between the two points shown on the graph below. (1st picture)

2 answers:

Alex Ar [27]3 years ago

7 0

Use the distance formula to find the value of the side lengths.
d=√((x1-x2)²+(y1-y2)²

d of side AC is 6

d of side CB is 10

Angela's use of the Pythagorean Theorem of 10²+6²+c² is incorrect; she put the right values in the wrong spots, the formula needed is:
6²+10²=c²

Option C- Angelica's side lengths were too long.

scoray [572]3 years ago

6 0

Answer:

(D) last option: Angelica made an error substituting the values into the Pythagorean theorem. The equation should be.

Step-by-step explanation:

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We are to find the error made by Sadie and then find the correct simplification.

The error Sadie made is that she wrote $a^7$ as $a^2 * a^5$ instead of $a^6 * a$ .

The square root of $a^6$ is $a^3$ and so she could have further simplified.

The correct simplification is shown below:

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