Cramer's Rule

In a system of linear equations, Is the determinant of the coefficients of the unknown is zero ?

• Yes

• No

What does we find in this picture ?

• D

• Dx

• Dy

• Dz

What's the value of D ?

• -2

• 2

• -1

• 1

What's the value of y ?

• 1

• -1

• 2

• -2

What's the value of Dy ?

• -1491

• -1492

• -1493

• -1494

• -1495

What's the value of Dz ?

• 16

• 17

• 18

• 19

• 20

What's the value of x ?

• 
• 
• 
• 
• 

A nutritionist creates a diet for a long-distance runner that includes 3,400 Calories from 680 grams of food, with half the Calories coming from carbohydrates. What's the value of D ?

• 17

• 20

• 23

• 26

• 36

What's the value of Dx,Dy and Dz from previous question ?

• Dx=2380 Dy=8500 Dz=2720

• Dx=2480 Dy=8500 Dz=2720

• Dx=2380 Dy=8400 Dz=2620

• Dx=2480 Dy=8400 Dz=2720

• Dx=2380 Dy=8400 Dz=2720

Who is he?

• James J. Cramer

• George Cramer

• Danielle Cramer

• Adriana Cramer

• Gabriel Cramer