Answer:

Step-by-step explanation:



because it's a straight angle(180)
Step-by-step explanation:
Given
x = 3 , y = 4
<h3>xy - 2x</h3>
= 3 * 4 - 2 * 3
= 12 - 6
= 6
Hope it will help :)
In any right triangle ABC, with right angle A we have the following:

and

.
This means that the sine of a non 90° angle, is equal to the cosine of its complementary angle.
Thus,

.
(Take a look at the picture. From the definition of trigonometric ratios in right triangles we have :

and

)
Answer: 19/20
Using proportions, it is found that both spaces have the same brightness, as both have 3 candles per m².
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
For Nayeli and Citlali, the rate of candles per m² is given by:
- N = 12/4 = 3 candles per m².
- C = 30/10 = 3 candles per m².
Hence both spaces have the same brightness, as both have 3 candles per m².
More can be learned about proportions at brainly.com/question/24372153
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