Answer:
B. -1
Step-by-step explanation:
If we have a parabola whose equation is:

The line of symmetry is calculated as:

Now, we have the equation
and the line of symmetry is 
Where:

So, we can replace
by -4 and
by -2 and solve for
using the following equation as:

It means that the equation of the parabola is equal to:

Answer:
∠ PQR = 55°
Step-by-step explanation:
∠ QPR = 74° ( vertical angles )
The sum of the 3 angles in a triangle = 180°
Subtract the sum of the 2 given angles from 180°
∠ PQR = 180° - (74 + 51)° = 180° - 125° = 55°
Answer: 146.24 square meters
Step-by-step explanation:
20 ÷ 5 = 4
So there are 4 sets of 5 shirts. If there are 3 striped shirts per 5 then
3 x 4 = 12 striped shirts
Hope it helps!
A unit fraction is a fraction whose numerator is 1.