Answer:
see explanation
Step-by-step explanation:
The inverse of a matrix A = is
=
If ad - bc = 0 then the matrix has no inverse
A =
ad - bc = (11 × - 1) - (- 5 × 3) = - 11 - (- 15) = - 11 + 15 = 4 , then
= =
Answer:
x = 20
Step-by-step explanation:
8x - 10 = 3x + 90
5x = 100
x = 20
4x + 80 = 180
x = 25
2x + 80 = 130
2x = 50
2, 5, 2 i think.
sorry if it’s wrong!
Answer:
-0.1 and 0.1
Step-by-step explanation:
A fourth root is a number which multiplied by itself 4 times gives 0.0001.
Since it is an even root and the result is positive, the answer must include both negative and positive values. This is true since a negative times a negative is a positive.
0.1*0.1*0.1*0.1 = 0.0001
So the real fourth roots are -0.1 and 0.1.