Grade Inflation . The bar graph shows the percentage of UScollege freshmen with an average grade of A in high school. The data displayed by the bar graph can be described by the mathematical model P = 4 x 5 + 25 where x is the number of years after 1980 and p is the percentage of U.S. college freshmen who had an average grade of A in highschool. Use this information to solve Exercises 107-108. 107. a. According to the formula, in 2010, what percentage of U.S. college freshmen had an average grade of A in high school? Does this underestimate or overestimate the percent displayed by the bar graph? By how much? 49. % overestimates by 1% b. If trends shown by the formula continue, project when57% of US. college freshmen will have and an averagegrade of A in high school 2020
Grade Inflation . The bar graph shows the percentage of UScollege freshmen with an average grade of A in high school. The data displayed by the bar graph can be described by the mathematical model P = 4 x 5 + 25 where x is the number of years after 1980 and p is the percentage of U.S. college freshmen who had an average grade of A in highschool. Use this information to solve Exercises 107-108. 107. a. According to the formula, in 2010, what percentage of U.S. college freshmen had an average grade of A in high school? Does this underestimate or overestimate the percent displayed by the bar graph? By how much? 49. % overestimates by 1% b. If trends shown by the formula continue, project when57% of US. college freshmen will have and an averagegrade of A in high school 2020
Solution Summary: The author calculates the percentage of U.S. college freshmen who had an average grade of A in high school in year 2010.
Grade Inflation. The bar graph shows the percentage of UScollege freshmen with an average grade of A in high school.
The data displayed by the bar graph can be described by the mathematical model
P
=
4
x
5
+
25
where x is the number of years after 1980 and p is the percentage of U.S. college freshmen who had an average grade of A in highschool. Use this information to solve Exercises 107-108.
107. a. According to the formula, in 2010, what percentage of U.S. college freshmen had an average grade of A in high school? Does this underestimate or overestimate the percent displayed by the bar graph? By how much? 49. % overestimates by 1%
b. If trends shown by the formula continue, project when57% of US. college freshmen will have and an averagegrade of A in high school 2020
=
Q6 What will be the allowable bearing capacity of sand having p = 37° and ydry
19 kN/m³ for (i) 1.5 m strip foundation (ii) 1.5 m x 1.5 m square footing and
(iii)1.5m x 2m rectangular footing. The footings are placed at a depth of 1.5 m
below ground level. Assume F, = 2.5. Use Terzaghi's equations.
0
Ne
Na
Ny
35 57.8 41.4 42.4
40 95.7 81.3 100.4
Q1 The SPT records versus depth are given in table below. Find qan for the raft 12%
foundation with BxB-10x10m and depth of raft D-2m, the allowable
settlement is 50mm.
Elevation, m 0.5 2
2 6.5 9.5 13 18 25
No.of blows, N 11 15 29 32 30 44
0
estigate shear
12%
Finite Mathematics for Business, Economics, Life Sciences and Social Sciences
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, subject and related others by exploring similar questions and additional content below.