Answer:
Side-Side-Side (SSS)
Step-by-step explanation:
I believe these triangles are congruent by the postulate SSS because both triangles have all three sides equal.
Plug in x into the equation. Take x= -2 for example. Your equation is 2x-5, so instead of x, you put -2.
2(-2)-5 = -9
Your table is as follows:
(-2,-9)
(-1,-7)
(0,-5)
(1,-3)
12^2+92-22
144+92-22
236-22=214
First get the equation into the form: Ax^2 + Bx + C = 0 (the quadratic equation)..
We do this by subtracting 10x both sides (to get it on the other side)..
9x^2 + 2 = 10x
9x^2 - 10x + 2 = 10x - 10x
9x^2 - 10x + 2 = 0
Now the discriminant is: b^2 - 4ac
The quadratic equation is Ax^2 + Bx + C = 0
Here, A = 9, B = -10 and C = 2 so plug them in...
(-10)^2 - 4 (9)(2)
= 100 - 4 (18)
= 100 - 72
= 28 <--- answer...
Answer:
10
Step-by-step explanation:
Given
f(x) =
x + 4 ← substitute x = 9
f(9) =
× 9 + 4
= 2 × 3 + 4
= 6 + 4
= 10