Your answer should be D. 3
We have two numbers say a, b. And a system of equations.

It looks a bit intimidating but it's actually very easy.
Instead of term a + b in the second equation we can say it's zero because the first equation describes a + b as being equal to 0.
So,

The above equation is not true therefore numbers a and b do not exists in the real number domain.

No solution.
Hope this helps.
Answer:
Step-by-step explanation:
Product means multiply
(10x^4y^2)(3xy3)
Numbers: 10*3 = 30
x: x^4 * x = x^5
y: y^2 * y ^3 = y ^ 5
Answer: 30x^5y^5
Powers don't multiply, they add. How confusing!
Answer:
Option D.
Step-by-step explanation:
we know that
Angle -135° is equal to
360°-135°=225°
The angle belong to the III quadrant
225°-180°=45°
sin(45°)=d/1=d
therefore
sin(-135°)=-sin(45°)=d ---> the value is negative