Answer:
6.1
Step-by-step explanation:
Draw a picture of an equilateral triangle. Cut the triangle in half, so that you get two 30-60-90 triangles. The area of these smaller triangles is 8 square inches.
The short leg of these triangles (the base) is half the side length: ½ s.
According to properties of 30-60-90 triangles, the long leg (the height) is √3 times the short leg: ½ s√3.
Area of a triangle is half the base times the height:
A = ½bh
8 = ½ (½ s) (½ s√3)
8 = ⅛ s²√3
64 = s²√3
s² = 64/√3
s = √(64/√3)
s ≈ 6.1
Answer:
y≤−6. Everthing more or equal to -6 should be shaded. So like fro-6 to -10
Step-by-step explanation:
Multiply each term in 12y≤−3 by 2 to eliminate the fractions.
<span>1A + 2C = $24, or, since A = 2S, you can write this as
2S + 2C = $24
The difference between $17 and $24 is $7, so this must be the cost of a child's ticket. Subtract this from $17 and you get $10, which must be the cost of 2 Senior tickets. So the Senior ticket costs $5, and the Adult ticket must cost $10.
Therefore 1 Adult and 1 Senior ticket costs $15 </span><span>
</span>
