The whiteboards she bought cost $35, and she spent a total of $51.20, subtract to find out the total amount she spent on posters:
So she spent a total of $16.20 on posters, now divide by the amount one poster costs to find out how many posters she bought.
So she bought 3 posters.
Answer:
10.62ft
Step-by-step explanation:
The area of a semicircle is the same as 1/2 the area of a circle.
Answer: x = - 16
y = - 11
Step-by-step explanation:
The given system of linear equations is expressed as
2x - 3y = 1- - - - - - - - - - - - -1
x - 2y = 6 - - - - - - - - - - - -2
We would eliminate x by multiplying equation 1 by 1 and equation 2 by 2. It becomes
2x - 3y = 1- - - - - - - - - - -3
2x - 4y = 12- - - - - - - - - - - -4
Subtracting equation 4 from equation 3, it becomes
y = - 11
Substituting y = - 11 into equation 2, it becomes
x - 2 × - 11 = 6
x + 22 = 6
Subtracting 22 from the left hand side and the right hand side of the equation, it becomes
x + 22 - 22 = 6 - 22
x = - 16
220 divided by 11 = 20
$20/hr
Area = π.R² AND CIRCUMFERENCE = 2π.R
Let's calculate R (radius):
452.16 = π.R² → R² = 452.16/π → R² = 143.92 And R = √143.92 →R = 12 m
CIRCUMFERENCE = 2π.R = 2π.12 = 24 π = 75.39 84 (Answer D)
