Slope = 70,000
point: (8,2000000)
Form: y = mx + b
2000000 = 70,000*8 + b
b = 3.57
EQUATION:
Profit = 70,000(year after 1990) + 3.57
This simplifies to 10x - 4
You can't have a square root of a negative number
To answer this, set up a system of equations. What we know is that
5x + 2y = 100
And...
x+y=38
x represents the unknown number of 5 points questions
y represents the unknown number of 2 point questions
In my opinion the easiest way to solve this is to use substitution (that is when you find out the value of one variable, either x or y, and substitute that value as the variable).
So,
x+y=38
Subtract x from both sides
y=38-x
Now, plug (38-x) in as y in the other equation.
5x + 2(38-x) = 100
5x + 76-2x= 100
3x+76=100
3x=24
x=8
Now that you know that x=8, you can solve for y.
5x+2y=100
5(8)+2y=100
40+2y=100
2y=60
---- ------
2 2
y=30
X=8
Y=30
There are 8 five point questions on the test and 30 two point questions on the test
I haven’t done this before but I’m sure it’s C. 15/5
5 is equal to 3.
45/27 is also equal to 5/3 (Divided both 45 and 27 by 9)
7.5:4.5 is also equal to 5:3 (Divided both 7.5 and 4.5 by 1.5)
15/5 is not equal because if you simplify it, it would become 3:1 (Divided both 15 and 5 by 5).
