Answer:1+3x+9+x+8+2x= 6x+9
so =3(x+3)
Step-by-step explanation:
Answer:
x=4
Step-by-step explanation:
here's our equation: 3x=x+8
Our goal: to isolate x onto one side with nothing else on that side.
x is on both sides; we can subtract x from both sides to make the variables and numbers be on different sides
2x=8
Now we can divide by 2
x=4
Hope this helps! :)
m∠B = 31.7° , a = 21.1 ft , b = 13.0 ft
Step-by-step explanation:
If ABC is a right triangle, where the right angle is B, then
- The hypotenuse of the triangle is b and a , c are its legs
- sin(A) =
![\frac{a}{b}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%7D%7Bb%7D)
- sin(C) =
![\frac{c}{b}](https://tex.z-dn.net/?f=%5Cfrac%7Bc%7D%7Bb%7D)
![b=\sqrt{a^{2}+c^{2}}](https://tex.z-dn.net/?f=b%3D%5Csqrt%7Ba%5E%7B2%7D%2Bc%5E%7B2%7D%7D)
- The sum of the measures of the two acute angles A and C is 90°
∵ ABC is a right triangle
∵ m∠C = 90°
∴ c is the hypotenuse and a , b are its legs
∵ m∠A = 58.3°
- The sum of the two acute angles in the right triangle = 90°
∴ m∠A + m∠B = 90°
- Substitute the measure of angle A
∴ 58.3 + m∠B = 90
- Subtract 58.3 from both sides
∴ m∠B = 31.7°
∵ sin(A) = ![\frac{a}{c}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%7D%7Bc%7D)
∵ c = 24.8 feet
∴ sin(58.3) = ![\frac{a}{24.8}](https://tex.z-dn.net/?f=%5Cfrac%7Ba%7D%7B24.8%7D)
- By using cross multiplication
∴ a = (24.8) × sin(58.3)
∴ a = 21.1 ft
∵ sin(B) = ![\frac{b}{c}](https://tex.z-dn.net/?f=%5Cfrac%7Bb%7D%7Bc%7D)
∵ c = 24.8 feet
∴ sin(31.7) = ![\frac{b}{24.8}](https://tex.z-dn.net/?f=%5Cfrac%7Bb%7D%7B24.8%7D)
- By using cross multiplication
∴ b = (24.8) × sin(31.7)
∴ b = 13.0 ft
m∠B = 31.7° , a = 21.1 ft , b = 13.0 ft
Learn more:
You can learn more about solving the triangle in brainly.com/question/12985572
#LearnwithBrainly
Divide by 5, answer is 1/7