Answer:
D. ![\left[\begin{array}{ccc}-12&-4\\9&3\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-12%26-4%5C%5C9%263%5Cend%7Barray%7D%5Cright%5D)
Step-by-step explanation:
In order for a matrix to be singular, the determinant has to be zero.
Answer:
gradient = -10
y intercept = 1
Step-by-step explanation:
y = mx + b
y = -10x + 1
m = slope ; hence, slope = -10 in the eqn
y intercept = when x = 0
y = -10(0) + 1
y = 1
Company B because if u multiply 20×3 then you would only have to pay $60 and if u buy it from company A you would have to multiply 11×3 and then multiply 33× 20 and then you would have to pay $660 so u would save more with company B
Problem One
Test it.
a^2 + b^2 = c^2
a = 8
b = 12 What will c calculate to be.
8^2 + 12^12 = c^2
c^2 = 64 + 144
c^2 = 208
If 18 is to be the hypotenuse of the triangle c^ must equal 324.
208 is nowhere's near that amount.
Mario is right.
Question Two
The only way Hank will be right is if 26 is the hypotenuse. If that is so, the third side is 24. This is how you do it.
a^2 + b^2 = c^2
c = 26
a = 10
10^2 + b^2 = 26^2
100 + b^2 = 676 Subtract 100
b^2 = 676 - 100
b^2 = 576
b = sqrt(576)
b = 24
If 26 is not the hypotenuse, the right triangle cannot be drawn.
