Answer:
C
Step-by-step explanation:
I an augmented matrix, the coefficients for the variables come first and then the answer
4 -2 5
5 -1 8
Let us say that:
x = age of brad
x + 2 = age of Alexandra
(x + 2) – 3 = age of Cecilia = x – 1
We are also given that:
x + x + 2 + x – 1 = 37
<span>
solving for x:</span>
3x + 1 = 37
3x = 36
x = 12 = age of brad
x + 2 = 14 = age of Alexandra
<span>x – 1 = 11 = age of cecilia</span>
The number of ways of she can do it is 504 ways
<h3>What is permutation?</h3>
The formula for permutation is given as:
Permutation = 
Where:
- n is the total number of objects = 9
- r is the number selected = 3
Substitute into the formula
Permutation = 
P( 9, 3) = 
P( 9, 3) = 
P( 9, 3) = 504 ways
Thus, the number of ways of she can do it is 504 ways
Learn more about permutation here:
brainly.com/question/12468032
#SPJ1
Answer:
6
Step-by-step explanation:
Integer a has to be -12, and integer b has to be -2, and when -12 is divided by -2 you get an answer of 6
Kilograms is what measurement to use.