1.1. Is the equation true, false, or open? Explain.

9p + 8 = 10p + 7

2. Is x = 1 a solution of the equation 2 – 8x = –6?

3. A souvenir maker wants to create a scale model of the Eiffel Tower. The Eiffel Tower is 324 meters tall and has a base with dimensions 125 meters by 125 meters. The model will rest on a base with dimensions 12.5 cm by 12.5 cm. How tall will the model be in centimeters?

Question

1.1.   Is the equation true, false, or open? Explain.

9p + 8 = 10p + 7

2.   Is x = 1 a solution of the equation 2 – 8x = –6?

3.   A souvenir maker wants to create a scale model of the Eiffel Tower. The Eiffel Tower is 324 meters tall and has a base with dimensions 125 meters by 125 meters. The model will rest on a base with dimensions 12.5 cm by 12.5 cm. How tall will the model be in centimeters?

anonymous · Answer

If you solve for p, you will get p=1. That means it is true. 

If p could equal a whole range of values, then it would be open. If you get something like nonsensical like 1=2 when you try to solve, it then it would be false....

2-8x=-6
-2
-8
-8x=-8
-8=1
Yes




125/12.5 = 10 so the scale is 10cm:1m
324/10 = 32.4cm