It is sometimes true because it isn't always that whey
Answer:
x = 7.5
Step-by-step explanation:
4 = 2/3 (2x - 9)
4 = 4/3x - 6
4 + 6 = 4/3x - 6 + 6
10 = 4/3x
10 x 3/4 = x
x = 7.5
Step-by-step explanation:
the solution is in the picture
Răspuns:
100%
Explicație pas cu pas:
Permiteți numărul inițial de fotografii = x
x - 50% din x = x - 0,5x = 0,5x
0,5x + câte% din 0,5x = x
x - 0,5x = y% de 0,5x
0,5x / 0,5x = 1
Prin urmare,
100% = 1
Prin urmare, x trebuie mărit cu 100% pentru a reveni la numărul original.
Answer:
60° or 120°
Step-by-step explanation:
You can solve the equation by combining like terms across the equal sign and using inverse operations. Since there are two terms with cos²∅, you can combine them.
6cos²∅ + 3 = 4 + 2cos²∅ Subtract 2cos²∅
4cos²∅ + 3 = 4 Subtract 3 from both sides
4cos²∅ = 1 Divide by 4 on both sides
cos²∅ = 1/4 Square root both sides
cos ∅ = ± 1/2
Solve by identifying which angles have a cosine value of 1/2 and -1/2. These angles are 60° and 120°