Step-by-step explanation:
AC=AB+BC-cos. AC=100+66-cos. AC=166-0.906. AC=√165.094. AC=12.8
Answer:
-9
Step-by-step explanation:
-2(5)+1
=-10+1
=-9
Substitute the 5 in for x
Answer: 9x+4=50
Step-by-step explanation:
In this case, we're looking at how many you can buy, not how many CD's you own.

Because there's one 3 & four 7's .

Because there are two 2's & four 9's