Answer:
7
Step-by-step explanation:
If x = -1 then we need to plug that into the equation.
5(-1)^2 +2
Then solve for the first part
5(1) + 2
Then multiply.
5 + 2
Then add
7.
Hope this helped!
Step-by-step explanation:
step 1. all the side length are different therefore all of the internal angles are different.
step 2. a triangle with all different angles is scalene.
step 3. all of the angles are less than 90°
step 4. a triangle with all angles less than 90° is acute.
4x-9=2x+5
4x-2x=9+5
2x=14
divide both sides by 2
x=7
53) Vertical angles are congruent, so 
54) 
and 
are supplementary, so 
55) Because vertical angles are congruent, 
. Now, because DR bisects 
, this means 
56) This is a geometric sequence where the next term is obtained by multiplying the previous term by -2, so the next two numbers are 16, -32
