Answer:
Determinant are special number that can only be defined for square matrices.
Step-by-step explanation:
Determinant are particularly important for analysis. The inverse of a matrix exist, if the determinant is not equal to zero.
How to find determinant
For a 2×2 matrix
For a 3×3 matrix
we first decompose it to 2×2
Example
Find the values of λ for which the determinant is zero
Equating the determinant to zero
s = * (1 ±5 )
s = 1.61 or -0.61
First, lets do all calculations in kg. 1kg=1000 grams
Lets set 1 cat's mass as x.
Lets set the other cat's mass as y.
1) x+y=11
2) y=x+1.5
Lets plug eq 2 into eq 1.
x+x+1.5=11
2x+1.5=11
2x=9.5
x=4.75 kg
If one cat weighs 4.75 kg, then the other must weigh 6.25 kg.
Answer:
y = 14
Step-by-step explanation:
Step 1: Write equation
2y - 10 = 18
Step 2: Solve for <em>y</em>
- Add 10 to both sides: 2y = 28
- Divide both sides by 2: y = 14
Step 3: Check
<em>Plug in y to verify it's a solution.</em>
2(14) - 10 = 18
28 - 10 = 18
18 = 18
Answer:
Yes
Step-by-step explanation:
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