I need help I don't know what to do

Step-by-step explanation:

so you understand what to do, or what they want you to figure out.

AD  is an "arc length" .  So they want to know the length, in degrees. along the circle , from A to D.   Why didn't they just say so, huh.  :D   well, they kinda did, but not as clear as they could have.

next.  you need to know how far around a circle is all the way around?  

if you guessed 360°,  you are right

next because they gave us that angle of 93° we know all the angles around the point E,  complimentary angles add to 180 so 180-93 = 87°.  That's the to the left of 93 and directly below it too.  This is the answer to the 2nd question  ∠DEC= 87°

we can only write arc length of AD in respect to what we know about the circle.

so,   arc length of AD is  161° + BA + AD + DC = 360

or getting AD by it self , then

AD =360 -161 -BA -DC

AD = 199°-BA-DC

maybe that's all you need to do,  also i'm wondering if there is some more info about this problem , maybe at the top of the page?  of off the screen?

c

step-by-step explanation:

c

region b will make the inequalities y < 2x + 1 and y > -x - 2 true ⇒ answer a

step-by-step explanation:

* lets study the graph and the inequality to solve the question

- the inequality y > -x - 2

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = -2 that means the line intersect the y-axis at point (0 , -2)

∵ the sign of the inequality is >

∴ we shad the part over the line

  region a and b

- the inequality y < 2x + 1

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = 1 that means the line intersect the y-axis at point (0 , 1)

∵ the sign of the inequality is <

∴ we shad the part under the line

  region b and c

∵ the common region between the two lines is region b

∴ region b will make the inequalities y < 2x + 1 and y > -x - 2 true