Which expression is equivalent to 9x – 3y – 5x + 7y + x + y? a. 5x2 + 4y2 b. 4x + 4y c. 5x + 5y d. 10xy

9x – 3y – 5x + 7y + x + y

9x-5x+x -3y+7y+y

x(9-5+1) +y(-3+7+1)

5x+5y

Choice C

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).