A student weighs a sample of the shale and incorrectly determines the mass to be 16 grams.
The real answer is 18 grams. Which equation
should be used to calculate the student's
percentage of error (percent deviation)?

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2

Geometry ! complete the following proof. given: qk=16, pk=26, mk=65, kl=40 prove: ∆qpk~∆lmk