142k views
3 votes
What is the value of D in the matrix equation below?

What is the value of D in the matrix equation below?-example-1

2 Answers

7 votes

Answer:

D.

Explanation:

E2020

User Mark Keane
by
8.0k points
1 vote

Answer:

9 11

-14 5

Explanation:

D is doing to be a 2 by 2 matrix

a b -1 -15 8 -4

c d + 0 7 = -14 12

The corresponding terms get added together to equal the corresponding term on the right.

a + -1 = 8

Add 1 on each side

a -1 +1 = 8 +1

a = 9

b + -15 =-4

Add 15 to each side

b-15+15 = -4+15

b =11

c+0 = -14

c = -14

d +7 = 12

Subtract 7 from both sides

d+7-7 = 12-7

d = 5

The matrix is

9 11

-14 5

User Krzysztof Piszko
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories