Check whether the two expressions 2x+3y2x+3y and 2y+3x2y+3x equivalent.
The first expression is the sum of 2x2x 's and 3y3y 's whereas the second one is the sum of 3x3x 's and 2y2y 's.
Let us evaluate the expressions for some values of xx and yy . Take x=0x=0 and y=1y=1 .
2(0)+3(1)=0+3=32(1)+3(0)=2+0=22(0)+3(1)=0+3=32(1)+3(0)=2+0=2
So, there is at least one pair of values of the variables for which the two expressions are not the same.
Answer:
D. x=6
Step-by-step explanation:
-3x + 5= -2x -1
more variables to left hand side and change its sign
-3x+2x+5=-1
move constant to right hand side and change its sign
-3x+2x=-1-5
collect like terms
-x=-1-5
calculate the difference
-x=-6
change the signs on both sides of the equation
x=6
Answer:
x = 14
Step-by-step explanation:
3 (x - 3) + 8x = 5 (2x + 1)
FOIL: 3x - 9 + 8x = 10x +5
Move all the x terms to one side and all the constants to the other:
3x + 8x - 10x = 5 + 9
Combine like terms: x = 14
Let's solve your inequality step-by-step. <span><span><span>−<span>3<span>(<span><span>−2</span>−x</span>)</span></span></span>+x</span>>20</span>
<span />Step 1: Simplify both sides of the inequality. <span><span><span>4x</span>+6</span>>20</span>
<span />Step 2: Subtract 6 from both sides. <span><span><span><span>4x</span>+6</span>−6</span>><span>20−6</span></span><span><span>4x</span>>14</span>
<span />Step 3: Divide both sides by 4.<span><span><span><span><span>4x</span>4</span></span></span>><span><span><span>144</span></span></span></span>
<span><span><span><span /></span></span></span><span>x><span><span>7/2</span></span></span>
We would know the distance if information on the points C and D are given.
As it is, there is no information. Please post an image, or coordinates of C & D.
