Answer:
-9-4e
Step-by-step explanation:
You would need to combine like terms which here would be 3e-7e which would equal -4e. Then take -19+10 and end up with -9.
Overall, -9-4e
The coefficient of the x-term is -3. Add the square of half of that.
.. (-3/2)² = 9/4 . . . . . . the number you need to add.
x² -3x +9/4 = (x -3/2)²
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If the x² term has a coefficient other than 1, you need to factor that out first and deal with the remaining binomial. For example,
.. 2x² -6x = 2(x² -3x)
For this you would need to add 9/4 inside parentheses to get
.. 2(x² -3x +9/4) = 2(x -3/2)²
Of course, to keep the original value, you would need to subtract 2*(9/4) outside parentheses.
.. 2x² -6x = 2(x -3/2)² -9/2
Answer:
Answers below
Step-by-step explanation:
9a. Meg needs to find the Part because she knows the whole is 16 and the percent is 50%
9b. Steve needs to find the percent because he knows the part is 7 and the whole is 35.
12. Find 4% of 40 for the sales tax
0.04*40=1.6
Therefore the sales tax is $1.6
It would be 6 and 3/10 because 4.5 plus 2.3 equals 6.3 so then you just make it into a mixed number and get 6 and 3/10
