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Mandarinka [93]
3 years ago
14

2x - y - 4 = 0 3x + y - 9 = 0 What is the solution set of the given system?

Mathematics
1 answer:
Ad libitum [116K]3 years ago
5 0

Answer:

(\frac{13}{5};\frac{6}{5}).

Step-by-step explanation:

1)\left \{ {{5x=13} \atop {y=2x-4}} \right.  \ 2)\left \{ {{x=\frac{13}{5} } \atop {y=\frac{6}{5} }} \right.

short explanation: 1) to add the 1st equation to the 2d; 2) to calculate the value of 'x', then to substitute x=13/5 into the 2d equation and calculate the value of 'y'.

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I need help asap pllz help !!​
swat32

Answer:

14/28

Step-by-step explanation:

14/28 reduces down to 1/2

6 0
3 years ago
HELP PLEASE ASAP (no links scammers) WILL GIVE BRAINLEAST (again NO LINKS)
Sophie [7]
B) Because 4/24 is the amount of cars
8 0
2 years ago
Kristin spent $120 on shirts. Dress shirts cost $40 and t-shirts cost $8. If she bought a total of 7 shirts, then how many of ea
FinnZ [79.3K]

Answer:

The correct answer is: She bought 2 dress shirts and 5 t-shirts

Step-by-step explanation:

Let's marked dress shirts with x and t-shirts with y.

Now we will make equations to solve this problem:

x + y = 7  =>  y = 7 - x

40 x + 8 y = 120

When we replace y = (7 - x) in the previous equation we get:

40 x + 8 (7 -x) = 120  40 x + 56 - 8 x = 120  => 32 x = 120 - 56 =>

32 x = 64  => x = 64/32 = 2 => x = 2

y = 7 - x = 7 - 2 = 5 =>  y = 5

x = 2 dress shirts

y = 5 t-shirts

God with you!!!

8 0
3 years ago
What is 9/11 +2/3 and show the work
andrey2020 [161]

Answer:

25/33

Step-by-step explanation:

1) find the least common denominator (LCD)

The LCD of 11 and 3 is 33

Multiply 9/11 by 3/3

You can do this because you are basically multiplying 9/11 by 1, (3/3 = 1)

See file below for steps

6 0
3 years ago
Solve 4(2a-1) = -10(a-5)
densk [106]
Firstly, you've got to expand the brackets, this becomes;
8a-4= -10a+ 50
You've then got to eliminate the -10a and you do this by adding 10a to both sides,
This then becomes 18a-4=50
You've then got to add 4, to eliminate this, which then becomes 18a=54
You've then got to divide both sides by 18, and this becomes 3.
Therefor, a=3
Hope this helps :)
4 0
3 years ago
Read 2 more answers
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