medium · Act math
If det beginbmatrix a & b c & d endbmatrix = 5, what is the determinant of matrix M = beginbmatrix 2a & 2b 2c & 2d endbmatrix?
- 25
- 20
- 10
- 40
Sign up free to see the explanation and track your rank →
More Act math practice
- A car travels at a constant speed of 45 miles per hour. How many feet does the car travel
- A large container holds 16 gallons of liquid. If 1 gallon is approximately equal to 3.8 li
- What is the percent markup on the item?
- Find the slope of the line passing through (0, -2) and (2, 0).
- Find the y-intercept of the line 3x - 4y = 12.
- In the linear equation y = -4x + 9, what is the y-intercept of the line?
- Solve for x in the equation 5(x + 2) = 35.
- What is the slope of the line represented by the equation 2x + y = 10?