Answer:
x + 15 = 3 (x - 5)
William’s current age: 15. Years old
Step-by-step explanation:
x + 15 = 3(x-5)
x + 15 = 3x - 15
15 + 15 = 3x - x
30 = 2x
x = 15
Its 12!!! uhm i have no explanation sorry...
Answer:
x = -1/2
Step-by-step explanation:
We are given:

Subtract 1 on both sides:

Then, multiply 3 on both sides:

Finally, divide 4 on both sides:

Answer:
It should be C aka 270°
Step-by-step explanation:
Answer:
a = √10
Step-by-step explanation:
a² + b² = c²
a² + 9² = (√91)²
a² + 81 = 91
a² = 10
a = √10
hope this helps :)