You’ll pay $775 since 25 pairs were $625
Answer: Choice B) (1/2x, y - 5)
The original transformation T takes some point (x,y) and turns it into (2x, y+5). What's going on with the coordinates? Well x is doubled to 2x while y is having 5 added to it. To get the inverse, we simply undo everything happening to the coordinates. We do the opposite.
Going from x to 2x has us multiply by 2. To backwards, we divide by 2. This is the same as multiplying by 1/2. At this point, the only answer is B. So we could stop here if we wanted. But let's keep going.
To go from y to y+5, we add on 5. Undo this by subtracting 5. So the inverse would be y-5.
That's why the inverse transformation is (1/2x, y-5)
Simplifying
10y + 4 = 2x
Reorder the terms:
4 + 10y = 2x
Solving
4 + 10y = 2x
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-4' to each side of the equation.
4 + -4 + 10y = -4 + 2x
Combine like terms: 4 + -4 = 0
0 + 10y = -4 + 2x
10y = -4 + 2x
Divide each side by '10'.
y = -0.4 + 0.2x
Simplifying
y = -0.4 + 0.2x
We have 2 similar triangles here so the correcponding sides are in the same proportion.:-
6/10 = 9 / x
6x = 90
x = 15
The elephant casts a shadow 15 feet long/
Step-by-step explanation:
In order to find the area, we need to find the radius. In order to find the radius, we need to divide 10 by 2 because the radius is half of the diameter.
10 ÷ 2 = 5
So, the area of the circle (given that the diameter is 10) is 78.50 in².
