80% of 30 students got the answers correct. How many students got it correct?

What is 7/4 as a decimal

If a circle has a radius off 33 inches, how many inches is it's diameter

The volume of two similar firgures is 135ft ^3 and 625ft^3. the area of the smaller figure is 61ft^2. what is the area of the larger firgure?

How many side are on a square

Several students were surveyed about their favorite class. The results are art 26, English 19, math 21 music 16 and science 32. What fraction of the students chose music as their favorite subject?

Is "y=19x-5 proportional or non-proportional?

Sam wants to write an equation to represent a proportional relationship with a constant of proportionality of 6. He writes the equation y = 6 + x. Is he correct. If not, what is the correct equation? Explain your answer.

A street light is at the top of a "20" ft tall pole. a woman "6" ft tall walks away from the pole with a speed of "5" ft/sec along a straight path. how fast is the tip of her shadow moving when she is "50" ft from the base of the pole?

Which equation describes a relationship that is directly proportional? y = 9 y = 3x y =.20 y = x + 4

Xavier said the missing length is about 18.5 units. Without calculating, how can you tell that Xavier solved incorrectly? a right triangle with A as 21 and B as 28. trying to find the hypotnus.