Hideo is calculating the standard deviation of a data set that has 7 values. he determines that the sum of the squared deviations is 103. what is the standard deviation of the data set? round the answer to the nearest tenth. i don't understand the question at

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 =

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.