Answer:
mass=180kg and the volume=6m³.
then the formula to find density is= mass/volume
using this formula,180kg/6m³=30kg/m³
Answer:
22
Step-by-step explanation:
Let r be red and b be blue
1/7(r-1+b)=r-1
1/5(r+b-2)=r
r-1+b=7(r-1)
r+b-2=5r
r-1+b=7r-7
1=7r-7-5r
8=2r
r=4
1/5(4+b-2)=4
2+b=20
b=18
18+4=22
4x+3y=8
x-2y=13
4x+3y=8
4x-4y=13
(4x-4x) - (3y+4y)= 5
7y=5
y=5/7
Plug this back to one of the original equations!
Good luck!
∠ACB = ∠ABC = 360°/8 = 45°
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∠ABC is an external angle of the octagon. Since it is equiangular, all external angles are equal. The sum of external angles of a convex polygon is always 360°, so one of 8 of those angles will be 360°/8 = 45°.
To find the area of the given polygon, first we will join P and S .
So we have two figures here, a rectangle GPST, and a triangle , PES .
Area of rectangle is length times width .
For the given rectangle, area is GP times PS .
And for triangle , area is half of the product of height and base.
For the given triangle,
Total area of the polygon is the sum of areas of rectangle and triangle , that is