Answer:
Step-by-step explanation: well when u add and multyply each number you get a x witch helps to multiply everything so the answer is A
Answer:
upward
Step-by-step explanation:
y=4x²+4
Look at the coefficient of x²
If it is positive, it opens upward, IF it is negative, it opens downward.
In this case, the x² coefficient is +4, hence it opens upward
(see attached for plot)
Answer:
Y=2
Step-by-step explanation:
9x - 4 y = 18
Answer:
The solutions are 0° and 3π
Step-by-step explanation:
On solving the equation given;

<u>Since sin is negative in the 3rd and 4th quadrant, </u>
In the 3rd quadrant;
x =180°+2π
x = π + 2π
x = 3π
In the 4th quadrant;
x = 360°-2π
x = 2π-2π
x = 0°