Me. ^^photos^^ i need with this math !

17. 11x - 11y  or  11x + (-11y)

18. -7.52 - 2.8  or  -7.52 + (-2.8)

19. 41x - 21y - 6

20. -3y -8xy

Step-by-step explanation:

17. Use the distributive property.

18. Use the distributive property to multiply each number inside the parentheses by 0.4

19. Multiply each number inside the parenthese by 7.

20.Multiply each term in parenthese by y.

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).