Aplayground slide is 14.5 feet long with an 8.5-foot tall ladder. what is the measure of the angle that the slide makes with the ground, x, to the nearest degree?

What is the result of the following division?

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected