Answer:
the answer is D
Step-by-step explanation:
i hope this helps and have a brilliant day :D
Use order of operations... PEMDAS - the order you should attack all math problems.
Parentheses
exponents
multiplication
division
addition
subtraction
So you have to do the exponent THEN the multiplication
3a^2 =
3*8^2 =
3 * 64 =
192
Answer:
y = -x + 21
Step-by-step explanation:
Equations that are perpendicular don't normally have the same slope as the original equation..
When you graph the given equation and the point, we can see that in order to make an equation that would cross through (9,12) and the line, we would need an equation with a negative slope.
**Using desmos (online graphing calculator)
If we continue to plug in numbers for our slope, we see that the equation
y = -x + 21 goes through point (9,12) and is perpendicular (intersecting or crossing through) line y = x + 1.
We can check our work by plugging in the coordinates of the point 9, 12 into our equations to see if they equal the same values..
y = -x + 21 --> 12 = -9 + 21 --> 12 = 21 - 9 --> 12 = 12 (correct)
