A substantial percentage of the United States population is foreign-born. The bar graph shows the percentage of foreign-born Americans for selected years from 1920 through 2008. The percentage, p, of the United States population that was foreign-born x years after 1920 can be modeled by the formula p = 0.004 x 2 − 0.37 x + 14.1. According to this model, in which year will 25% of the United States population be foreign-born? Round to the nearest year.
A substantial percentage of the United States population is foreign-born. The bar graph shows the percentage of foreign-born Americans for selected years from 1920 through 2008. The percentage, p, of the United States population that was foreign-born x years after 1920 can be modeled by the formula p = 0.004 x 2 − 0.37 x + 14.1. According to this model, in which year will 25% of the United States population be foreign-born? Round to the nearest year.
A substantial percentage of the United States population is foreign-born. The bar graph shows the percentage of foreign-born Americans for selected years from 1920 through 2008.
The percentage, p, of the United States population that was foreign-born x years after 1920 can be modeled by the formula
p
=
0.004
x
2
−
0.37
x
+
14.1.
According to this model, in which year will 25% of the United States population be foreign-born? Round to the nearest year.
4. In a study of how students give directions, forty volunteers were given the task ofexplaining to another person how to reach a destination. Researchers measured thefollowing five aspects of the subjects’ direction-giving behavior:• whether a map was available or if directions were given from memory without a map,• the gender of the direction-giver,• the distances given as part of the directions,• the number of times directions such as “north” or “left” were used,• the frequency of errors in directions.a) Identify each of the variables in this study, and whether each is quantitative orqualitative. For each quantitative variable, state whether it is discrete or continuousb) Was this an observational study or an experimental study? Explain your answer
Find the perimeter and area
Assume {u1, U2, us} spans R³.
Select the best statement.
A. {U1, U2, us, u4} spans R³ unless u is the zero vector.
B. {U1, U2, us, u4} always spans R³.
C. {U1, U2, us, u4} spans R³ unless u is a scalar multiple of another vector in the set.
D. We do not have sufficient information to determine if {u₁, u2, 43, 114} spans R³.
OE. {U1, U2, 3, 4} never spans R³.
F. none of the above
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Linear Equation | Solving Linear Equations | What is Linear Equation in one variable ?; Author: Najam Academy;https://www.youtube.com/watch?v=tHm3X_Ta_iE;License: Standard YouTube License, CC-BY