Crisandra needs to research five of the animals in the chart below for an assignment. How many ways can the five animals be chosen so that at least two animals are amphibians? (Assume order of selection is not important)

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).

it’s the first one your welcome

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm