Answer:
-2.9
Step-by-step explanation:
You are really subtracting. Note that if you have a positive & negative sign directly next to each other, you will subtract:
-1.2 + (-1.7) = -1.2 - 1.7 = -2.9
-2.9 is your answer.
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Answer: She bought 68 books.
Step-by-step explanation:
Subtract 31 from 99 to find the difference! The difference tells us how many books she bought at the yard sale.
Answer:
don't know sorry
Step-by-step explanation:
dont know sorry
Answer: 
<u>Simplify both sides of the equation</u>

<u>Subtract 5n from both sides</u>

<u>Subtract 15 from both sides</u>

Answer:
Using the quadratic formula to solve 11x2 - 4x = 1, what are the values of x?Step-by-step explanation: