Answer:
(-8) + (+17) = -8 + 17 = 9
Step-by-step explanation:
Level of water in the first week = - 8 (the negative sign represents a decrease in inches, of the level of water)
Level of water during the second week = + 17 (the positive sign represents an increase, in inches, of the level of water).
These changes in the level of water can be modelled as sum of a positive and a negative integer as follows:
(-8) + (+17)
When adding a negative and a positive integer value, subtract the smaller value from the greater value, and retain the sign of the value that is greater.
17 is greater than 8. Therefore, subtract 8 from 17, and retain the sign of 17.
Thus:
(-8) + (+17) = -8 + 17
= 9
Answer:
C. x = −1.11 and x = 1.11
Step-by-step explanation:
1. I assume you meant 49x^2-60, not 49x2-60.
2. Plug the numbers into the quadratic formula and simplify.
a=49 b=0 c=-60
Answer:
The answer is c. 16x2 + 24xy + 9y2.
Step-by-step explanation:
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Multiply by 3 so the answer is three
