1. x2 + 4 > 0 2. x2 + 3x + 2 < 0
3. x2 < 16
4. x2 - x > 20
5. x2 + 2x +1 <0
6. x3 + 2x2 - 4x 38
7. x2 - 6x > -9
8. x2 + 25 50

4th option is correct xy=-10

if this was to u plzz mark me the brainliest

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).

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right

do it yourself this is easy

step-by-step explanation: