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3 years ago

13

Please help!!!!!! 5 points please

1 answer:

Alex73 [517]3 years ago

6 0

$\left \{ {{-x + 2y = 6} \atop {6y=x + 18}} \right.$

First, we should rearrange the first equation to set it equal to y:

-x + 2y = 6
2y = 6 + x
y = 3 + 0.5x

Now, we can plug this into the second equation for y and solve for x:

6y = x + 18
6(3 + 0.5x) = x + 18
18 + 3x = x + 18
3x = x
2x = 0
x = 0

The x-value of the solution is 0.

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Nifal earned 9$ for washing two cars .He recived $1 more for the second car.How much was he paid for washing each car?Which two

Sveta_85 [38]

Answer:

Nifal received $ 4 for washing the first car.

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

Step-by-step explanation:

The problem can be rewritten as follows: Find the sum of two consecutive entire numbers equal to 9. That is:

$x + y = 9$

$y = x+1$

Then, by eliminating y:

$x + (x+1) = 9$

$2\cdot x + 1 = 9$

Now, let is clear $x$ :

$2\cdot x = 8$

$x = 4$

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The earning for the second car is: ( $x = 4$ )

$y = x +1$

$y = 4 + 1$

$y = 5$

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

8 0

3 years ago

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Wewaii [24]

Answer:

The correct answer is 6.768.

Step-by-step explanation:

(4.23)(1.6) = 6.768

8 0

3 years ago

Read 2 more answers

Please answer soon (40 Points)

Aleonysh [2.5K]

Answer:

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Step-by-step explanation:

-9*11g = -99g

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So, it is -99g - 54

Hope this helps!

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2 years ago

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Roman55 [17]

Answer:

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Step-by-step explanation:

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3 years ago

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When x=2 and y=4, by how much does the value of 4x^2 - y exceed the value of 3x^2 - 3y

kakasveta [241]

Step-by-step explanation:

4(2)² - 4 =

4(4) - 4 = 12

3(2)² - 3(4)

3(4) - 12

12 - 12 = 0.

It exceeds the value by 12 :)

6 0

2 years ago