The angle measures are 60, 60, 60
Let the required number be x, then to create a proportion using the form

Thus, let 15 be

of x, then

Therefore, 15 is <span>

of</span> 1,000
Multiply 9*14=126
multiply 7*6=42
3x-4 is the answer, you have to see that if its 3 times her nieces age it would be 3x and if its four less than that it is 3x-4
Answer: 6782.4 ft is your answer
Step-by-step explanation: