Adding and Subtracting Matrices — Unit test

Question 1

What is the product?0.4 x 0.6

Revolt · Accepted Answer

0.24

Question 2

What is the product?0.2 x 0.3

Revolt · Accepted Answer

0.06

Question 3

To find this product, Marcus first multiplied 103 x 27.1.03 x 2.7 = 2781

Revolt · Accepted Answer

2.781

Question 4

Which would be the next step in solving for matrix A?

Revolt · Accepted Answer

mc019-4.jpg

Question 5

Which statements about Aiden’s work are true? Check all that apply.

Revolt · Accepted Answer

Aiden did not insert the decimal point correctly after multiplying the actual amount.; Aiden’s estimate and the actual product do not match closely enough.

Question 6

If A, B, and C represent three matrices of the same size and (A + B) + C = 0, then which statement is true?

Revolt · Accepted Answer

mc016-4.jpg

Question 7

What are the values of x and y in the matrix equation below?

Revolt · Accepted Answer

mc026-4.jpg

Question 8

Shaniqua has a piece of red scrapbooking ribbon that is 2.715 inches long. She also has a piece of pink ribbon that is 3.154 inches long. How much longer is the pink ribbon than the red ribbon?

Revolt · Accepted Answer

0.439 inches

Question 9

Which property is shown in the matrix addition below?

Revolt · Accepted Answer

inverse property

Question 10

Alejandro has two marbles. One weighs 0.56 grams, and the other weighs 0.825 grams. How much more does the second marble weigh?

Revolt · Accepted Answer

0.265 grams

Adding and Subtracting Matrices — Unit test Answers

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