In part A, we need to solve for the total length of sides 1, 2 and 3.
Since all three sides measurements are given, we have the solution below:
Sides123 = Side 1 + Side 2 + Side 3
Sides123 = (3y² + 2y - 6) + (4y² + 3y -7) + (5y² + 4y -8)
Sides123 = 12y² + 9y - 21
This is the total length of sides 1,2 and 3 "12y² + 9y - 21"
In part B, we need to solve for the length of the fourth side and the solution is shown below:
Side 4 = Perimeter / Sides123
Side 4 = (4y³ + 18y² + 16y -26) / 12y² + 9y -21
Answer:
(3,-4)
Step-by-step explanation:
3x+(first equation)=5
3x+(-x-1)=5
2x-1=5
x=3, solve for y;
y=-3-1, y=-4
Answer:
x= 33/7 or 4.7
Step-by-step explanation:
X=3
Steps:
I used a calculator.
Given the matrices A and B:
We know that:
Then, using the matrices A and B:
And the element C₄₁ (fourth row and first column) is:
Now, for the matrix (A + B) - A = B:
