<span>Z=15+2(x+y)
Use distributive property
Z= 15 + 2x + 2y
Subtract 2y from both sides
Z - 2y= 15 + 2x
Subtract 15 from both sides
Z - 2y - 15= 2x
Divide 2 on both sides
Final Answer: Z - 2y - 15(All over 2)= x</span>
Answer:
x = 7
Step-by-step explanation:

Answer:
1-
Step-by-step explanation:
because 1 was removed from it
Answer:
9, 9x, 18x
Step-by-step explanation:
Hence the B. I hope this helps love!
Answer:
true
Step-by-step explanation:
If the standard deviation is increased and the sample size and confidence level stay the same, then the margin of error will also be increased