Y2-y1/x2-x1
(1,14) & (3,4)
y2= 4
y1=14
x2=3
x1=1
So....
(4-14)/(3-1) = -10/2 = -5
The answer should be negative instead of positive, she probably subtracted 4 from 14 instead.
Answer:
56
Step-by-step explanation:
Givens
Given Ratio = 2/5
Given mass on earth = 140
Ratio
2/5 = x/140 or
0.4 = x / 140
Solution
2/5 = x/140 Cross multiply
5x = 2*140 Combine
5x = 280 Divide by 5
x = 280/5
x = 56
You could also do this by combining the left side of the original proportion into 0.4
0.4 = x / 140 Multiply both sides by 140
0.4*140 = x Combine the left
56 = x
Given problems:
Line parallel that passes through (2,3);
Solution:
To solve this problem, we need to first understand what parallel lines are.
A parallel line is any two line that does not meet at any point.
In order to achieve this, both lines must have the same slope.
So, we find the slope of the given line and write in the form for a straight line.
Slope of line = 
let x₁, y₁ = (-2, -1)
x₂, y₂ = (2 , -3)
Now input the parameters and solve for the slope;
Slope of line =
=
Any line that would be parallel to this must have the same slope.
Equation of a straight line;
y = mx + c;
y and x are the coordinates;
m is the slope
c is the y-axis intercept;
From (2, 3);
y = 3 and x = 2; m =
3 =
x 2 + C
3 =
+ C
C = 
So the equation of the line is;
y =
+
Multiply through by 3;
3y = -2x + 13
The equation of the line is 3y = -2x + 13
Answer:
1/3
Step-by-step explanation:
51/6 = 51/6
51/2= 5 3/6
= 2/6
1000 grams equals 1 kilogram. 1000/20 =50
You would need 50 floppy disks.