Answer:
D
Step-by-step explanation:
Given
21 ≤ - 3(x - 4) < 30
Divide all intervals by - 3, reversing the inequality symbols as a result of dividing by a negative quantity.
- 7 ≥ x - 4 > - 10 ( add 4 to each interval )
- 3 ≥ x > - 6, that is
- 6 < x ≤ - 3 → D
Answer:
120 cm²
Step-by-step explanation:
From the question;
- Length is 12 cm
- Width is 10 cm
We are required to determine the area of the cross section;
- Note that the cross section is the plane of a solid that remains constant through the solid.
- In this case, the cross section is a rectangle whose dimensions are 12 cm by 10 cm.
But Area of a rectangle = Length × Width
Therefore;
Area of cross section = 12 cm × 10 cm
= 120 cm²
Thus, area of the cross section is 120 cm²
Answer:
x¹=-6 x²=0
Step-by-step explanation:
Substitute y =0
Swap sides
Factor expression
Split into possible cases
Solve equation
