Suppose c is a 3 x 3 matrix such that det (c) = 4. show that det (c+c) is equal to 32

Step-by-step explanation:

Let's consider C is a matrix given by

them determinant of matrix C can be written as

Now,

                    = 32      

Hence, det (C+C) = 32

no he doesnt because "-16' is negatiive

step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true