If their perimeters are equal, we can add up all the side lengths of each triangle, and set the perimeters equal to each other to find the value of x that satisfies the equation:
x - 2 + x + 3x + 1 = 2x - 5 + x + 4 + 6x - 7
Combine like terms:
5x - 1 = 9x - 8
And finally, solve for x:
7 = 4x
x = 
Therefore, x is equal to
.
<em>Hope this helps! :)</em>
The correct answer is rhombus
210 balloons divided by 70 (the percent) = 3 (1% = 3 balloons)
3 times 100 = 300 Balloons
The total number of balloons purchased is
300 balloons
Phoebe is correct. The line on the graph would be vertical in the x-axis value of 12.