I think the most simple way to solve this is by writing out a few general expressions;
$40 - $10 = $30
$30 - 4x = y
$10 + y = z
X = Amount of Smoothies
Y = Total Amount left
Z = Total + the $10
Engineering majors : Math majors
102 engineering and 36 math, so it's 102:36 which is simplified to 17:6
Answer:
Welll....from the diagram, you can see you have two triangles (one on each side)
area of triangle = 1/2 base*height = 1/2 * 2 x 10 = 10 ft2 each
then you are left with a rectangle 13 ft x 10 ft = 130 ft^2
130 + 10 + 10 = 150 ft2
or you could just use the formula for area of parallelogram base * height = 15 * 10 = 150 square feet
It is in form (x,y) (ususally)
7.5 and 12
there is something called a coordinate system where a line called the y axis runs vertically for infinity and a line perpendicular to it, crosses it. the other line is called the x axis which also extends for infinity
the point where they cross is point (0,0) or the origin
basically the numbers tell you how far you are from the axises
on the y axis, + numbers are up and - numbers are down
on the x axis, + numbers are to the right and - numbers are to the left
7.5=x and 12=y
+7.5 is positive
7.5 means that the point is 7.5 units to the right of the origin in relation to the x axis
12 is positive
12 means that the point is 12 units up from the origin in relation to the y axis
hope this helped. feel free to ask if its too confusing
2/21= 1/7 that's in simplest form