<span>-2x + 8 + 5x > 2x + 1
3x + 8 > 2x + 1
x > -7
answer
D) - 5</span>
Answer:12
Step-by-step explanation:
Your goal with variables should always be to isolate them.
so the first step is to subtract the 4
3x^2+4=436
-4= -4
3x^2=432
The next step to isolate the variable x is to get rid of the 3. To get rid of the 3 you have to divide both sides by 3 since it is the opposite of multiplying.
3x^2=432
/3. =/3
x^2=144
the last step to isolate the x is to do the opposite of what an exponent is, which is to find the square root. So when you square the x^2, the exponent cancels out.
square root of x^2=x
square root of 144=12
x=12
hope this helps!
Answer: D. 2
Explanation:
1=2x-3
4=2x
2=x
Answer:
Step 3
Step-by-step explanation:
when solving by completing the square you are supposed to do (b/2)^2 and then add that to both sides.
In your example (-8/2)^2=16
You are supposed to add sixteen to both sides not 64
Susu forgot to divide 8 by 2 before she raised it to the to the second powerm that is why she got 64, which is incorrect.
Answer:
30.78
Step-by-step explanation:
It would be
tan(P) * PM =
10 * tan(72 degrees) = 30.78
Since tan(P) = MN/PM