Answer:
x =25
<B = 65 degrees
<C = 50 degrees
Step-by-step explanation:
65 + (3x-10) +2x = 180
Add like terms:
55 +5x = 180
Subtract 55:
5x = 125
Divide by 5:
x = 25
Substitute for x and solve
Answer:
You would need 284,000 grams.
Answer: 56.0°
<u>Step-by-step explanation:</u>
Use the Law of Cosines:
b² = a² + c² - 2ac · cos B
20² = 22² + 18² - 2(22)(18) · cos B
400 = 484 + 324 - 792 · cos B
400 = 804 - 792 · cos B
-404 = - 792 · cos B
0.5151 = cos B
cos ⁻¹ (0.5151) = B
55.99 = B
56.0 ≈ B