Answer:
Step-by-step explanation:
x + y = 4 ---------------(i)
x = 4-y
7x + 9y = 42 -----------(ii)
Plug in x = 4-y in equ (ii)
7*(4 - y) + 9y = 42
28 - 7y +9y = 42
28 + 2y = 42
2y = 42 - 28
2y = 14
y = 14/2
y = 7
x = 4 - y
x = 4 - 7
x = -3
Answer:

Step-by-step explanation:



– Examples: Smoke, Fire, Water, Wind, Leaves, Cloth, Magnets, Flocks, Fish, Insects, Crowds, etc
– Examples: Angry birds, Bodies tumbling, bouncing, moving around in a room and colliding, Explosions & Fracture, Drop the camera, etc…
Summarize rigid body simulation.
Answer:
21
Step-by-step explanation:
You were close to de answer but you rounded in a wrong way
If we calculate <em>
</em>we get<em> 21.2602916255</em>
We need to round to the nearest whole number, it means that we have we only have two options: 21 or 22
We need to remember the rounding rules:
- If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up
- If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down
We see that 1 is followed by 2, it means that we have to round the number down, so our answer is 21