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2 years ago

A system of equations is shown below.

Mathematics

2 answers:

sergejj [24]2 years ago

8 0

I: 4x-5y=-10
II: 2x-7y=4

c) multiply the second equation by -2 and add the result to the first equation
II*-2=-4x+14y=-8

add I+II*-2: 4x-5y+(-4x+14y)=-10-8
=9y=-18

tiny-mole [99]2 years ago

4 0

The correct answer is D
Hope this helped :)

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2 years ago

Read 2 more answers

The table below shows the numbers of tickets sold at a movie theater on Friday.

prisoha [69]

Answer:

Number of Adult's tickets sold on Saturday = 3,356

Number of Children's tickets sold on Saturday = 2, 928

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Step-by-step explanation:

Here, the number of tickets sold on FRIDAY:

Adult Ticket sold = 1,678

Children's Tickets sold = 976

So, the total number of tickets sold on Friday

= Sum of ( Adult + Children's ) tickets = 1,678 + 976 = 2,654 .... (1)

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Adult Ticket sold = 2 times the number of adult tickets sold on Friday

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3 years ago