ITS THE LAST ONE
Step-by-step explanation:
2X+3>9
2X>-12
X>-6
Answer:
a. x = 9 + 4y
b. x = (7y-2)/6
c. x = (17 + k)/4
d. x = (9-c)/k
Step-by-step explanation:
In each of the equations, we want to make x the formula subject
a) 3x-12y = 27
3x = 27 + 12y
3x = 3(9 + 4y)
x = 9 + 4y
b) 6x-7y = -2
6x = 7y-2
x = (7y-2)/6
c) 4x - k = 17
4x = 17 + k
x = (17 + k)/4
d) kx + c = 9
kx = 9-c
x = (9-c)/k
where det(<em>A</em>) = 1×1 - 2×1 = -1.
where det(<em>B</em>) = 0×2 - (-1)×1 = 1. Then
On the other side, we have
and det(<em>AB</em>) = det(<em>A</em>) det(<em>B</em>) = (-1)×1 = -1. So
and both matrices are clearly the same.
More generally, we have by definition of inverse,
where is the identity matrix. Multiply on the left by <em>A </em>⁻¹ to get
Multiplication of matrices is associative, so we can regroup terms as
Now multiply again on the left by <em>B</em> ⁻¹ and do the same thing:
Answer:
The correct option is e) 27.
Step-by-step explanation:
Consider the provided information.
We need to find how many palindromes are possible If 5-digit palindromes are formed using one or more of the digits 1, 2, and 3,
The number should be in the form of XYZYX
Now for the first digit we have 3 choices, for second digit we also have 3 choices, for third digit we also have 3 choices but for fourth and fifth digit we have only one choice.
Therefore the number of possible palindromes are:
3 × 3 × 3 × 1 × 1 = 27
Hence, the correct option is e) 27.
Answer:
$24 > $8
Step-by-step explanation:
Well if Mary has $32 and the food estimate costs $8 then the inequality would be written as $24 > $8. So Mary would have 24 dollars to play games.
I am a 96.7 percent sure this is correct :D Hope i could help <3