150 full time freshman, 150 full times sophomore, 150 full time juniors, and 150 full time seniors are asked how many hours they spend on coursework outside of class. Which sampling method?
1. Simple random sample
2. stratified sampling
3. systematic sampling
4. convenience sampling

Question 3 of 30 paul buys fruit to make smoothies. he buys 3.78 pounds of apples, 2.12 pounds of peaches, and 4.45 pounds of oranges. paul rounds each weight to the nearest tenth of a pound. about how many pounds of fruit did paul buy? (a) 10.5 pounds (b) 10.2 pounds (c) 10.4 pounds (d) 10.0 pounds 30 points

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

In the triangles, bc =de and ac fe. if the mzc is greater than the mze, then ab isdfelth