Answer:
1. $450
2. $128
Step-by-step explanation:
1. new price = .4 (.4 * original price x)
72 = .16x
x = 450
2. new price = .75 (.75 * original price x)
72 = .5625x
x = 128
The height of this triangle would be 10.4
In order to find this, you first must find the length of the sides. Using a manipulated formula for area of an equilateral triangle, we can determine the lengths of the side. Below if the formula.
S =
In this, S is the length of the side and A is the area. So we plug in and get:
S =
S =
S = 12
Now that we have the side as 12, we can use the Pythagorean Theorem to find the height. If you split a equilateral triangle down the middle, you are left with two right triangles. Using this right triangle, the hypotenuse would be 12, the first leg would be 6 (half of the base) and the height would be the other leg. So we plug in and solve.
h = 10.4
The contestants total number of points is 20.
30 + 15 = 45
45 - 25 = 20 total points
A is the answer I got hope this helps !!
Answer:
1811.6
Step-by-step explanation:
647x28
18116
move once to the left bc of the point in 64.7
1811.6