Answer:
76.
Step-by-step explanation:
Here, a=3, b=-10 and c=2. Substitute the values, Therefore, the discriminant of is 76.
Answer:
Step-by-step explanation:
Find the width as below
- l² + w² + h² = d², where l- length, w- width, h- height, d- the distance between top and bottom corners
Substitute the values and solve for w
- 4² + w² + 12² = 13²
- w² + 160 = 169
- w² = 9
- w = 3 feet
Now find the volume
- V = lwh
- V = 4*3*12 = 144 ft³
I believe it is -20.
Hope that helped you out.