Find the sum of 3x2−7x+5 and x2−4x−9, subtract 5x2−8x−7. Question 4 options:

−x2−3x+3

−x2−19x−11

x2−3x+3

−x2+3x−3

-x2 -3x + 3

Step-by-step explanation:

(3x2-7x+5)+(x2-4x-9)-(5x2-8x-7)

4x2-11x-4 -5x2 +8x+7

-x2-3x+3

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

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).