Two of the steps in the derivation of the quadratic formula
are shown below.
which operation is performed in the derivation of the
quadratic-formula moving from step 6 to step 7?
- 400
step 6: 0'da = (x + )
-
x
+
40
20
subtracting
from both sides of the equation
step 7: 1762-40c =x+ b
2 a
20
squaring both sides of the equation
taking the square root of both sides of the equation
taking the square root of the discriminant

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

Long division the problem is 40 ➗ 348 = ?

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.