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m_a_m_a [10]
3 years ago
10

Help me with this algebra problem. Thank you :)

Mathematics
1 answer:
nata0808 [166]3 years ago
5 0
To solve this problem you must apply the proccedure shown below:

 1. You must make a system of equations, as below:

 2. Let's call:

 x: the number of first class tickets bought.
 y: the number of coach tickets bought.

 3. Then, you have:

 x+y=7 (First equation)
 970x+370y=3790 (Second equation)

 x=7-y

 4. By substitution, you have:

 970x+370y=3790
 970(7-y)+370=3790
 y=5

 x=7-y
 x=7-5
 x=2

 Therefore, the answer is:

 - Number of first class tickets bought=2

 - Number of coach tickets bought=5
 
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Answer:

$4 and $3

Step-by-step explanation:

First, write out the equations as 70x + 29y = 367 and 70x + 45y = 415. Solve by using the elimination method by subtracting 70x from 70x. 45y minus 29y is equal to 16y. 415 minus 367 is 48. Divide 48 by 16, to get y is equal to get y is equal to three. Y represents pepperoni pizzas, so a pepperoni pizza costs $3. Plug a 3 into any equation for y and solve for x. 29 times 3 is 87. 367 minus 87 is 280. 280 divided by 70 is equal to 4, so x is equal to 4.

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Find the area of the shaded region .
klasskru [66]
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Area of a rectangle=length x width.

Area of the greater rectangle=(8x-1)(6x)
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Area of the shaded region=(8x-1)(6x)-(5x+3)(2x)
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Answer: the area of the shaded region would be: 38x²-12x
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KATRIN_1 [288]

Answer:

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