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Anettt [7]
3 years ago
14

I need help i dont understand this​

Mathematics
1 answer:
mel-nik [20]3 years ago
8 0
140 tickets sold at the door

Step by Step Explanation:

x = tickets sold in advance
y = tickets sold at the door

We use the formula ax+by=c and a+b=c

x + y = 514
17x + 20y = 9158

y = 514 - x
17x + 20(514 - x)
17x + 10,280 - 20x = 9,158
-3x + 10,280 = 9,158
-3x = -11222
x = 374

This is for tickets sold in advance so we need to find y

374 + y = 514
y = 140

140 tickets were sold at the door

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First you need to do is to slove the 1/2 Tamil to get the answers
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3 years ago
Ann reads 10 pages of her book every
Semenov [28]

Answer: Ann read 34 pages that day

Step-by-step explanation:

Ann reads 10 pages of her book everyday

And with every free minute she has she can read 2 pages

With 12 free minutes that day we do the following:

Multiply 12 by 2 to get the number of pages she reads in that free time which equals 24.

Then we add that 24 to the 10 pages she will read regardless.

Which leaves us with 34 pages.

Hope This Helps! :)

5 0
3 years ago
A straight slide in a playground design makes an isosceles triangle with the
julia-pushkina [17]

Answer:

Option D.

Step-by-step explanation:

  • First, the you need ti understand that the triangle is an isosceles right angled triangle. In other words, the base and height are equal in length. The third side is the slide. This is the longest side.
  • Next, we know that the formula for calculating the area of a right angled triangle is given by:

        A = 1/2 (base × perpendicular height)

  • The perpendicular height is equal to the base. Let's say the base is <em>x</em>. It means that the height is also x, since height = base.
  • Therefore, the formula will be:

       A = 1/2 (x.x)

           =1/2 (x²)

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     Multiplying both sides by 2 gives:

     32×2 = x²

     64  = x²

       8   = x

To find the third side, we use the Pythagoras theorem:

    C² = A² + B²

         = 8² + 8²

         = 128

   C = √128

       = 8√2

However, the answer will not be exact, so we  multiply the length of the base and height by 2. This gives x = 16 (Length of base = length of height)

Repeating the steps above gives C = √ (16)² + (16)²

                                                           = √256

This corresponds to option D.

3 0
3 years ago
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x + x + 2 = 170
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x = 168/2
x = 84

x + 2 = 84 + 2 = 86

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