<span>A = adult ticket price
C = child ticket price
2A + 3C = 31.50
1A + 5C = 35.00
multiply second equation by 2 and subtract the first equation
2A + 10C = 70.00
2A + 3C = 31.50
----------------------
7C = 38.5
C = 5.5
Plug in C to find A:
1A + 5 * 5.5 = 35.00
A + 27.5 = 35.00
A = 35.00 - 27.5
A = 7.5
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X + 19 + 7x + 9 = 180
8x + 28 = 180
8x = 180 - 28
8x = 152
X = 152 : 8
X = 19
How many piles are there in total? then we will be able to answer the question
Answer:
1
Step-by-step explanation:
A triangle is a polygon with three sides and three angles. The types of triangles are scalene triangle, equilateral triangle, right angled triangle and obtuse triangle.
Trigonometric functions are used to show the relationship between the angles of a triangles and the sides of the triangle. For a right angled triangle, the ratio of the sides can be gotten using trigonometric functions such as:
cosθ = adjacent/hypotenuse, sinθ = opposite/hypotenuse, tanθ = opposite/adjacent
Given the right angle triangle:
cos(A) = adjacent / hypotenuse = 3 / 4.24
cos(A) = 3 / 4.25
cos(B) = adjacent / hypotenuse = 3 / 4.24
cos(B) = 3 / 4.24
cos(A) / cos(B) = (3 / 4.24) ÷ (3 / 4.24) = 1
cos(A) / cos(B) = 1
Answer:
12/13
Step-by-step explanation: