To encode a message, break it into groups of three characters (including spaces) each, adding spaces at the end if needed. then, replace each character with an integer (a --26, space 27). write each group of three numbers as a column matrix and multiply b, shown at right, by each matrix. to decode an encoded message, write it as column matrices. multiply 8-1 by each matrix, then translate the results back to text. complete parts (a) through (o) below. 0 1 -1 (a) encode the message stay put. begin by finding the matrix product of b and the first group of three characters into three integers 0 1 -1 the full message is (b) find the inverse of b. (type a matrix, using an integer or decimal for each matrix element. do not factor out a scalar multiple.) (c) use the inverse of b to decode the message 204, -144, 7, 196, -100, -22, 264, -182, -2.

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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what's the question?

step-by-step explanation:

there is no question.

answer: 12,000

step-by-step explanation: first you ar e supposed to add. then multiply then subtract

both the histogram and the stem and leaf plot will visually show how many shoppers were of various ages within each range of data.   the histogram does not give us the specific ages of these shoppers unlike the stem and leaf plot.a histogram does not give us a true range of the data because we do not know exactly how old the shoppers were. a stem and leaf plot will give exact ages, so we can determine the exact range along with all measures of center and the others measures of center.   with the histogram, we cannot find any of these.

step-by-step explanation: