1) 100N 2) 0.3m/s² 3) 1/2 kg
Step-by-step explanation:
1) F = ma
F = 50×2
F = 100N
2) F = ma
9000 = 30000×a
(9000÷30000) = a
a = 0.3m/s²
3) F = ma
1 = m×2
(1÷2) = m
m = 1/2 kg
1 1 1 2
2 -3 1 -11 -2R1 + R2 → R2
-1 2 -1 8 R1 + R3 → R3
1 1 1 2
0 -5 -1 -15 R2 ⇔ R3
0 3 0 10
1 1 1 2
0 3 0 10 -R3
0 -5 -1 -15
1 1 1 2
0 3 0 10 1/3 R2
0 5 1 15
1 1 1 2 -R2 + R1
0 1 0 10/3 -5R2 + R3
0 5 1 15
1 0 1 -4/3
0 1 0 10/3 -R3 + R1
0 0 1 -5/3
1 0 0 1/3
0 1 0 10/3
0 0 1 -5/3
Therefore, x = 1/3, y = 10/3, z = -5/3
A. Inverse
<h2>
Explanation:</h2>
Basically, inverse Property of Addition states that if you add any number added to its opposite the result will be equal zero. So, here we have the following equation:
Adding -12 to both sides we get:
<h2>Learn more:</h2>
Distributive property: brainly.com/question/12256474
#LearnWithBrainly
Step-by-step explanation:
The answer is 28.8 (the first option)