What she said hope that helps
Answer:
The second option
Step-by-step explanation:
x+y=29
5x+2y=100
then y=29–x
since 5x+2y=100
then 5x+2(29–x)=100
then 5x+58–2x=100
then 3x+58=100
then 3x=100–58
then 3x=42
then x=42/3
then x=14
then y=29–14=15
Answer:
the answer is 8, the distance between -11 and -3 is 8
Step-by-step explanation:
if you count the between the numbers it's a total of 8
Area of square = Side × Side
- Side of square is 120 Cm.
⇛Area = 120 cm × 120 cm
⇛Area = 14400 cm²
Hence , the area of square is 14400 cm²
1) We calculate the volume of a metal bar (without the hole).
volume=area of hexagon x length
area of hexagon=(3√3 Side²)/2=(3√3(60 cm)²) / 2=9353.07 cm²
9353.07 cm²=9353.07 cm²(1 m² / 10000 cm²)=0.935 m²
Volume=(0.935 m²)(2 m)=1.871 m³
2) we calculate the volume of the parallelepiped
Volume of a parallelepiped= area of the section x length
area of the section=side²=(40 cm)²=1600 cm²
1600 cm²=(1600 cm²)(1 m² / 10000 cm²=0.16 m²
Volume of a parallelepiped=(0.16 m²)(2 m)=0.32 m³
3) we calculate the volume of a metal hollow bar:
volume of a metal hollow bar=volume of a metal bar - volume of a parallelepiped
Volume of a metal hollow bar=1.871 m³ - 0.32 m³=1.551 m³
4) we calculate the mass of the metal bar
density=mass/ volume ⇒ mass=density *volume
Data:
density=8.10³ kg/m³
volume=1.551 m³
mass=(8x10³ Kg/m³ )12. * (1.551 m³)=12.408x10³ Kg
answer: The mas of the metal bar is 12.408x10³ kg or 12408 kg
