Answer:
y = -(1/7)x + 1
Step-by-step explanation:
![3x + 21y = 21 \\ 21y = 21 - 3x \\ y = \frac{21 - 3x}{21} \\ y = 1 - \frac{1}{7} x \\ y = - \frac{1}{7} x + 1](https://tex.z-dn.net/?f=3x%20%2B%2021y%20%3D%2021%20%5C%5C%2021y%20%3D%2021%20-%203x%20%5C%5C%20y%20%3D%20%20%5Cfrac%7B21%20-%203x%7D%7B21%7D%20%20%5C%5C%20y%20%3D%201%20-%20%20%5Cfrac%7B1%7D%7B7%7D%20x%20%5C%5C%20y%20%3D%20%20-%20%20%5Cfrac%7B1%7D%7B7%7D%20x%20%2B%201)
Answer: b
Step-by-step explanation: I did this on a test before
Answer:
The answer for your question is D.
I HOPE THIS WILL BE HELPFUL.
Given the measure of side a, b and c of the triangle, the measure of angle C to the nearest tenth is 104.5°.
<h3>What is the measured angle C?</h3>
From the law of cosines;
cosC = ( a² + b² - c² ) / 2ab
Where C is the angle C and a, b, and c are the three sides of the triangle.
Given the data in the question;
- Side a = 2
- Side b = 3
- Side c = 4
- Angle C = ?
Using law of cosine;
cosC = ( a² + b² - c² ) / 2ab
We substitute the values into the equation.
cosC = ( 2² + 3² - 4² ) / ( 2 × 2 × 3 )
cosC = ( 4 + 9 - 16 ) / ( 12 )
cosC = -3 / 12
cosC = -0.25
We find the inverse of cosine.
C = cos⁻¹( -0.25 )
C = 104.477°
C = 104.5°
Given the measure of side a, b and c of the triangle, the measure of angle C to the nearest tenth is 104.5°.
Learn about cosine rule here: brainly.com/question/20839703
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Answer:
x4
Step-by-step explanation: