Sorry I don’t understand this
The figure is a scalene triangle, and the exact length of side a is √13
<h3>How to determine the exact length of side a?</h3>
To calculate the length of a, we make use of the following law of cosine
a² = b² + c² - 2bc * cos(A)
Using the values in the figure, we have:
a² = 3√2² + 5² - 2 * 3√2 * 5 * cos(45)
Evaluate the expression
a² = 18 + 25 - 30
Evaluate the sum and the difference
a² = 13
Take the square root of both sides
a = √13
Hence, the exact length of side a is √13
Read more about law of cosines at:
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What are the other equations to compare it to ?
Answer:
-10+12=2;+2
Step-by-step explanation:
If a number, a, rounded to 1 decimal point is 49.3. A number, b, rounded to 1 decimal point is 7.6 the upper and lower bounds of a-b is: 41.66; 41.79.
<h3>
Upper and lower bounds</h3>
Given:
A= 49.3
B=7.6
Now let find the lower bounds and the upper bounds
Lower bounds is calculated as:
Lower bounds=a-b
Lower bounds=49.35-7.69
Lower bounds=41.66
Upper bounds is calculated as:
Upper bounds=a-b
Upper bounds=49.34-7.55
Upper bounds=41.79
Therefore If a number, a, rounded to 1 decimal point is 49.3. A number, b, rounded to 1 decimal point is 7.6 the upper and lower bounds of a-b is: 41.66; 41.79.
Learn more about Upper and lower bounds here:brainly.com/question/15308379
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