Answer:
A) 12
You know:
<em>AB= 3x</em>
<em>AB= 3xAC= 17</em>
<em>AB= 3xAC= 17BC= 2x-3</em>
Therefore, you can put the values in a number line for reference. By doing this you can see that <em>3x + 2x -3</em> (or AB +BC) <em>= 17</em> (or AC)
From here you can set up the equation to be:
<em>1</em><em>7</em><em> </em><em>=</em><em> </em><em>2</em><em>x</em><em> </em><em>-</em><em> </em><em>3</em><em> </em><em>+</em><em> </em><em>3</em><em>x</em>
and solve for x by combining like terms:
<em>1</em><em>7</em><em>=</em><em> </em><em>5</em><em>x</em><em>-</em><em>3</em>
adding 3 to both sides:
<em>2</em><em>0</em><em>=</em><em>5</em><em>x</em>
dividing each side by 5:
<em>20/5=5x/5</em>
to get:
<em>x=4</em>
then, you're gonna plug in your <em>x</em> (4) into <em>3x</em> (your AB) in order to solve for AB:
<em>AB=3x</em>
<em>AB=3x =3(4)</em>
<em>AB=3x =3(4) =12</em>
therefore, your answer is:
AB = 12
Answer:
40% or 4/10
Step-by-step explanation:
If 4 out of the 10 marbles are red, you simply divide them (4/10).
3x + 2y + y - 3x = 180
3y = 180
y = 180/3
y = 60
3x = y - 3x
Let y = 60
3x = 60 - 3x
3x + 3x = 60
6x = 60
x = 60/6
x = 10
Answer: x = 10, y = 60
14+17+20+23+26+29+32+35+38+41=275
Ea week the allowance increase by $3
<h3>Answer:</h3>
1 . . . . . . matches the last selection
<h3>Explanation:</h3>
<em>Any non-zero value</em> raised to the zero power is 1.