Robert knows from reading his syllabus in intermediate algebra that the average of his chapter tests accounts for 60 % ( 0.6 ) of his overall course grade. He also knows that the final exam counts as 40 % ( 0.4 ) of his grade. Suppose that the average of Robert’s chapter tests is 89 % . a. Determine the range of grades that he would need on his final exam to get an “ A” in the class. (Assume that a grade of“A” is obtained if Robert’s overall average is 90 % or better.) b. Determine the range of grades that Robert would need on his final exam to get a “B” in the class. (Assume that a grade of “ B” is obtained if Robert’s overall average is at least 80 % but less than 90%.)
Robert knows from reading his syllabus in intermediate algebra that the average of his chapter tests accounts for 60 % ( 0.6 ) of his overall course grade. He also knows that the final exam counts as 40 % ( 0.4 ) of his grade. Suppose that the average of Robert’s chapter tests is 89 % . a. Determine the range of grades that he would need on his final exam to get an “ A” in the class. (Assume that a grade of“A” is obtained if Robert’s overall average is 90 % or better.) b. Determine the range of grades that Robert would need on his final exam to get a “B” in the class. (Assume that a grade of “ B” is obtained if Robert’s overall average is at least 80 % but less than 90%.)
Solution Summary: The author calculates the range of marks that Robert needs to score in his final exam to get an A grade.
Robert knows from reading his syllabus in intermediate algebra that the average of his chapter tests accounts for
60
%
(
0.6
)
of his overall course grade. He also knows that the final exam counts as
40
%
(
0.4
)
of his grade. Suppose that the average of Robert’s chapter tests is
89
%
.
a. Determine the range of grades that he would need on his final exam to get an “ A” in the class. (Assume that a grade of“A” is obtained if Robert’s overall average is
90
%
or better.)
b. Determine the range of grades that Robert would need on his final exam to get a “B” in the class. (Assume that a grade of “ B” is obtained if Robert’s overall average is at least
80
%
but less than 90%.)
Listen
ANALYZING RELATIONSHIPS Describe the x-values for which (a) f is increasing or decreasing, (b) f(x) > 0 and (c) f(x) <0.
y Af
-2
1
2 4x
a. The function is increasing when
and
decreasing when
By forming the augmented matrix corresponding to this system of equations and usingGaussian elimination, find the values of t and u that imply the system:(i) is inconsistent.(ii) has infinitely many solutions.(iii) has a unique solutiona=2 b=1
if a=2 and b=1
1) Calculate 49(B-1)2+7B−1AT+7ATB−1+(AT)2
2)Find a matrix C such that (B − 2C)-1=A
3) Find a non-diagonal matrix E ̸= B such that det(AB) = det(AE)
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.
Continuous Probability Distributions - Basic Introduction; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=QxqxdQ_g2uw;License: Standard YouTube License, CC-BY
Probability Density Function (p.d.f.) Finding k (Part 1) | ExamSolutions; Author: ExamSolutions;https://www.youtube.com/watch?v=RsuS2ehsTDM;License: Standard YouTube License, CC-BY
Find the value of k so that the Function is a Probability Density Function; Author: The Math Sorcerer;https://www.youtube.com/watch?v=QqoCZWrVnbA;License: Standard Youtube License