Answer:
the answer is -30
Step-by-step explanation:
| 2 4 |
| 3 -9| = ( 2 * (-9) ) - ( 4 * 3)
= - 18 - 12
= -30
let the number = x
x*80/100 = 55
x = 5500/80
x=68.75
After rounding off, it will remain 68.75
Answer:
Step-by-step explanation:
The model equation: y = mx + b
First, we should find the slope. The equation is

The numbers in the equation stand for the y or x variable from either the first or second point. So, we plug in the numbers and get,

=
= 
What we have right now is y = 1/2x + b. To solve for b (the y-intercept), we have to take one of the points and plug in the x and y variables. If we take the first point, the equation becomes,
3 = 1/2(4) + b
3 = 2 + b
b = 3 - 2
b = 1
The final equation is,
y =
x + 1
well, it could mean many things like a variable, x axis on a graph, and a letter in the alphabet.