What is the number of combinations of 7 things taken 3 at a time?
1 answer:
You might be interested in
Answer:
The cost of the sweater is $37.37
Step-by-step explanation:
÷
Answer:
b=2√7 ≈ 5.29 meters
Step-by-step explanation:
think of it like a right triangle like in the picture with 8metre ladder as the hypotenuse
a²+b²=c²
6²+b² =8²
b²= 8²-6²=28
b=√28 =2√7 ≈ 5.29 meters
