4.3 Solving 3x2-2x-1 = 0 by the Quadratic Formula .
According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by :
- B ± √ B2-4AC
x = ————————
2A
In our case, A = 3
B = -2
C = -1
Accordingly, B2 - 4AC =
4 - (-12) =
16
Applying the quadratic formula :
2 ± √ 16
x = —————
6
Two real solutions:
x =(2+√16)/6
or:
x =(2-√16)/6
X equals 2/ab I’m pretty sure
Answer:
m∠EBF = 47°
Step-by-step explanation:
Just subtract 133 from 180.
Answer:
The area of the smaller iPhone is 
Step-by-step explanation:
It was given that the ratio of the corresponding side lengths of two similar iPhones is 4 : 3.
The scale factor that can be used to calculate the corresponding sides of the bigger iPhone, when the length of the smaller iPhone is known is

The scale factor for the area is

Let the area of the smaller iPhone be S.
Then 
Then 
Then 