University:
North Central College
Course:
MATH 151 | Calculus I
Academic year:

2020
Views:

46

Pages:

6
Author:

Clint W.

Matrices Review Advanced Math Give the dimensions of the following matrices. -3 8 2) [ 1 -2 -6 7 6) [- 3 4] 7) Kennedy High School Enrollment 9 th Grade Male Female 155 186 10 th Grade 11th Grade 202 175 184 179 a) Write a matrix representing the information in the table. Call it matrix A. 12th Grade 193 182 Grade b) Let Matrix B represent the students absent today. i) Identify B2 1. 9 10 8 16 B= [ 14 12 11 12 12 10 1 18 22 � ii) What does this entry mean in the 'real world'J ;he, \'\\Ambe.r o .f +ert\O.lt (\ _ ______ L th �roh.,S iii) Find the number of students at school today in each category. Hint: What operation will you use? Matrix addition? f\,;L1trix multiplication? 1cn -1\o \1-S- It. atrix Subtraction? Multiplying by a scalar? 11-1 I l. I c) Tomorrow is picture day. If only half of each group of students who are absent today are absent tomorrow, find the matrix that represents the students who will be absent tomorrow. Hint: What operation will you use? Matrix addition? Matrix Subtraction? [Multiplying by a scalar? f Matrix multi lication? 1-e= [Y 'i, l, � '° q sl \\J 41,ser,f -h, d.ll.Af.