20*282= 5640
10680-5640=5040
50-20=30
5040 dividend by 30= 168
Answer: 168
Answer:
Y=7+3x, x=-3, y=-2
Step-by-step explanation:
3x-5y=1. Equation 1
3x-y=-7. Equation 2
-y=-7-3x isolate for y in equation 2
y=7+3x multiplied by -1 to get positive y
3x-5(7+3x)=1 substitute y value of equation 2 (7+3x) into equation 1
3x-35-15x=1
-12x=36
x=-3
solve for y.
3x-5y=1
3(-3)-5y=1
-9-5y=1
-5y=10
y=-2
The perimeter of the shape is 94 cm and the area is 462 sq cm.
Step-by-step explanation:
Given,
The radius (r) = 14 cm
To find the area and perimeter of the given shape.
The given shape is
of the full circle.
Formula
The perimeter of the circle = 2πr
The perimeter of the given shape =
(2πr)+r+r =
(2πr)+2r
The area of the circle = πr²
Now,
The perimeter of the given shape =
(2×
×14)+2×14 = 94 cm
The area of the given shape =
(πr²)
=
×
×14² = 462 sq cm
Answer:
12
Step-by-step explanation:
its direct proportion. 15 divided by 5 is 3 so you must multiply 3 by 4 to get the amount of people, which is 12