Answer:
Origin
Step-by-step explanation:
Both circles pass through the origin (0,0) in this diagram shown.
Answer:
88°
Step-by-step explanation:
Angles B and D are supplementary, so the value of x is ...
x = 180° -116° = 64°
Then the measure of angle A is ...
(2x -40)° = (2·64 -40)° = 88°
The measure of angle A is 88°.
The answer should be A because when I put them on a graph they were in the shape of a square/rectangle
The error that occurred is a systematic error.
<h3>
What is random error?</h3>
Random error is a type of error that causes one measurement to differ slightly from the next.
<h3>
What is systematic error?</h3>
Systematic error is a type of error that affects measurements in the same amount or by the same proportion, provided that readings are taken in the same way.
The three measurements 548.5 g, 548.9 g, and 548.7 g differ slightly but in the same amount and proportion.
Therefore, a systematic error occurred during the determination of the mass of the substance because the readings were taken in the same way and the measurement differ in the same amount.
Read more about error in measurement here:
https://brainly.in/question/9800276
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I don't think giving you the exact answers would help, so here are the formulas:

For #1:
We're solving for a.