Answer:
Step-by-step explanation:
Answer: Addition property of equality
Step-by-step explanation: You added the x to the other side, which is clearly using addition. Hope this help!
The answer is x=15 hope this is right
1) sample
2. random sample
3. biased sample
4. estimating from a sample
hope it helps
Answer:
20÷8=2,5 12÷2,5=4,8 8÷2,5=3,2 10÷2,5=4 5÷2,5=2 therefore 4,8+3,2+4+2=14