30 Points. Directions: Type your response in the box.
Martha recorded the ratio of students and teachers at all the middle schools in the Timber Creek school district. The list is shown below.

1. 20 students : 2 teachers
2. 1 teacher per 15 students
3. 1 teacher per 10 students
4. 40 students : 4 teachers
5. 5 teachers per 40 students

Part A: Identify the unir rates and ratios that are equivalent.
Part B: Give another unit rate or ratio that is not on the list but equivalent to the ones from Part A. Explain why these are equivalent.

step-by-step explanation:

p ÷ r = tan(x)

step-by-step explanation:

given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.

graph is missing so i will create the graph as per given information.

the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.

now we need to find about what is p ÷ r equal to.

so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.

p ÷ r=tan(x)

hence final answer is p ÷ r=tan(x).

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.

step-by-step explanation:

a and d