Answer:
c. 9 det A
Step-by-step explanation:
Given the following data;
Since A is a square matrix of order 2, we know that n = 2
K = 3
For any scalar k;
∣kA∣ = k^{n} ∣A∣
<em>Substituting into the equation;</em>
∣-3A∣ = -3²∣A∣
Simplifying, we have;
∣-3A∣ = 9∣A∣
= 9 detA
<em>Therefore, det (-3A) = 9 detA</em>
The answer would be 7y+35
Answer:
$35.93
Step-by-step explanation:
15% of 39.50= 33.58
7% of 33.58= 35.93
EK=6, KF=6
By the Pythagorean theorem
EF≈8,48≈8
Answer: 8 units
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P.S. Hello from Russia :^)
Slope= -1y+-3x
Just look at the slope and see how many it goes down on the y and look how the x changes.
