7s + 20 = 4s -13
7s - 4s = -13 -20
3s = -33
s = -33/3
s = -11
Answer:
ok thanks for being here
Step-by-step explanation:
The decimal is .39024..., or rounded to percent it is 39%
Answer:
See below
Step-by-step explanation:
<u>An invalid solution.</u>
When you use the quadratic formula, for example, to solve for 't', time, you will often find one of the values of 't' to be NEGATIVE value for time.....this would be an <u>extraneous</u> solution.
Sometimes when working with LOG equations you may fin an answer which is negative.....you cannot have a LOG of a negative number...THAT solution would be EXTRANEOUS
ETC
SO, always check your answers to see if they 'work' for your problem.
Hello!!
We know y = 7 + x. Substitute this into our other equation,
2x = (x + 7) - 10
2x = x - 3
x = -3
Now, we know that x = -3 so, we can conclude that the answer is choice B.
Hope this helps!! Let me know if you have ANY questions.