Answer:
B. 10
Step-by-step explanation:
To find the answer we would plug each given number into x to see if it makes the equation true
<em>A. 2(5) = 20 </em>
<em> 10 </em><em> 20</em>
<em>B. 2(10) = 20</em>
<em> 20 = 20</em>
<em>C. 2(20) = 20</em>
<em> 40 </em><em>20</em>
As you can see, the only answer that makes the equation 2x=20 true, is answer B
sqrt(4x) / 2x + 1 = 3
Set domain :
2x + 1 cannot equal 3
2x cannot equal 2 | :2
x cannot equal 1
sqrt(4x) = 3(2x + 1)
sqrt(4x) = 6x + 3
4x = 36x^2 + 9
36x^2 - 4x + 9 / f(x) = ax^2 + bx + c
16-4*36*9
16-1296 = - 1280
There's no solutions in Real Number set.
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-Step-by-step explanation:
Answer:
B=(C-D)/A
Step-by-step explanation:
You first subtract D from both sides, and then you get C-D=AB. To isolate the variable of B, you divide both sides by A, resulting in B=(C-D)/A.