Answer:
Dannielle's mistake was that she added the exponents,
x^3 + 5x^3, doesn't equal 6x^6
Step-by-step explanation:
the correct work is below:
x^3 + 5x^3 + 5x^2 - 3x^2 + 2x - 7 - 1
6x^3 + 2x^2 + 2x -8
Answer:
16.6%
Step-by-step explanation:
Let x be the number.
The equation would be: 5 (2x - 11) = -25
Multiply 2x - 11 by 5 so that it is 10x - 55
Now, move the -55 to the other side of the equation so 10x = -25 + 55
Subtract so 10x = 30
Now divide 30 by 10 to find x.
x = 3
7 + 1.50h = 19
1.50h = 19 - 7
1.50h = 12
h = 12 / 1.50
h = 8 hrs <===
X= -5 because you divide -5x by -5 to get x alone so you have to 25/-5 which is -5
