Answer:
42
Step-by-step explanation:
f(-5) = -9 × (-5) - 3 = 45 - 3 = 42
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below =)
Answer:
-5
Step-by-step explanation:
because 6-1=-5 therefore the is -5
Answer:
Step-by-step explanation:
Given that
(3x) is raised to power 5
(3x)^5
Then,
Using indices
(AB)ⁿ = Aⁿ•Bⁿ
Then,
(3x)^5= 3^5•x^5
Then, 3^5 means=3×3×3×3×3=243
So,
(3x)^5= 243x^5
Answer:
Step-by-step explanation:
So we have the equation:
First, note that since the sign is greater than, this is an <em>or</em> inequality (not an "and" inequality). This is the student's first mistake.
So, let's solve this inequality.
Case 1:
Subtract 1 from both sides:
Divide both sides by -4:
The student did not flip the sign when doing this step, hence the incorrect answer.
You correctly spotted the student's mistake. Nicely done!
Case 2:
This is what you're missing: for this second instance, we <em>must</em> flip the sign to <em>less than</em> right away. This is because we are essentially multiplying the 3 by a negative. So, we must flip the sign in order to be correct.
Now solve. Subtract 1 from both sides:
Divide both sides by -4. Since we're dividing by a negative, flip the sign:
So, our solutions are:
As mentioned previously, this is an <em>or</em> inequality. Therefore, our final answer is:
Edit: Improved Answer
Answer:
I believe it might be 2over 6
Step-by-step explanation:
my guess but it might be wrong or right i dont know