Two angles are vertical angles. One angle is labeled 2x∘. The other angle is labeled ( x +30 ) ∘. Find the value of x.
Group of answer choices

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)