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polet [3.4K]
3 years ago
9

22 Let (x, y) be the solution of the system of equations below.

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
5 0
The Answer is (D) 9


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Help me for a brainllest. A theater holds 2,680 seats. The lower level has 100 less than 2 times as many seats as the upper leve
Kaylis [27]

Answer: 1430

Step-by-step explanation: x + y + z = 2680  

x = 2z - 100  

y = 3z + 80  

x + y = 5z - 20  

6z - 20 = 2680  

z = 450  

y = 1430  

Solution:  

x = 800, y = 1430, z = 450

5 0
3 years ago
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A parking garage charges a fixed amount of money for each hour that it is used.
insens350 [35]
Ok what is the rest of the question
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2 years ago
sally works 38 hours er week her weekly wage is £355.68 she recieves a pay increase of 23p per hour whats her new weekly wage
zhenek [66]

Answer:

  • £364.42

Step-by-step explanation:

  • Weekly wage =  £355.68
  • Work week = 38 hours

<u>Hourly pay is:</u>

  • £355.68/38 = £9.36

<u>New payment per hour:</u>

  • £9.36 + £0.23 = £9.59

<u>New weekly wage is:</u>

  • £9.59*38 = £364.42
4 0
3 years ago
Simplify the following expression.<br> 2x^2-9-17x^2+10+7x
snow_lady [41]

Answer:

- 15x² + 7x + 1

Step-by-step explanation:

Given

2x² - 9 - 17x² + 10 + 7x ← collect like terms

= (2x² - 17x² ) + 7x + 1

= - 15x² + 7x + 1

5 0
3 years ago
Three friends went apple picking and then counted the apples they picked.Who had the largest red to green apple ratio? Use compl
antoniya [11.8K]

Answer:

Carmen had the largest red to green apple ratio of 5 : 3

Step-by-step explanation:

Red apples : Green apples

Carmen = 20 red apples : 12 green apples

= 20 / 12

= 5 / 3 = 1.67

= 5 : 3

Dylan = 12 red apples : 10 green apples

= 12 / 10

= 6 / 5 = 1.2

= 6 : 5

Eli = 16 red apples : 20 green apples

= 16 / 20

= 4 / 5 = 0.8

= 4 : 5

Carmen had the largest red to green apple ratio of 5 : 3

7 0
3 years ago
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