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3 years ago

Right answer gets brainlist

Mathematics

1 answer:

nekit [7.7K]3 years ago

7 0

Answer:

132

Step-by-step explanation:

12 times 11= 132 PLEASE MARK BRAINLIEST

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Which expression gives the x-coordinate of the solution of the system?

aalyn [17]

To find the the expression that gives the value of $x$ we are going to proceed as follows:
$5x+3y=-18$ equation (1)
$2x-4y=-28$ equation (1)

Step 1. solve for $y$ in equation (2)
$2x-4y=-28$
$-4y=-28-2x$
$y= \frac{-28-2x}{-4}$
$y=7+ \frac{1}{2} x$ equation (3)

Step 3. Replace equation (3) in equation (1) and solve for $x$
$5x+3y=-18$
$5x+3(7+ \frac{1}{2} x)=-18$
$5x+21+ \frac{3}{2} x=-18$
$\frac{13}{2} x=-39$
$x= \frac{-39(2)}{(13)}$
$x=-6$

We can conclude that the expression that gives the value of $x$ is: $x=-6$

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3 years ago

The new laptop measures 2 inches tall, 12 inches long, and 16 inches wide. Which is the correct unit of measurement to use when

ki77a [65]

The answer to this question is in squared

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3 years ago

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Please answer as soon as possible!!!

riadik2000 [5.3K]

1.445 x 10^3

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3 years ago

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The quadratic function g(x)=ax^2+bx+c has the complex roots (-5+9i) and (-5-9i).

Gekata [30.6K]

Answer:

I don't know sorry

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3 years ago

Show that (2, 1) is a solution of the system of equations. x + 3y = 5, y = –x + 3 Substitute (2, 1) into x + 3y = 5 to get . Sim

Natalka [10]

I am not sure if I understand the question that clearly but if what I think is correct is that you need to prove that 2 and 1 are a system of equations for the following equations so this is how you do that:

With the coordinates (2,1) 2 will be x and 1 will be y because when dealing with coordinates (x,y) is how they are set up.

Next you substitute into the equations and solve:

(2) + 3(1) = 5 and 1 = -(2)+3

So now you find if the equations are true

2 + 3 = 5 so (2,1) is a solution for this equation

-2 + 3 = 1 so (2,1) is also a solution for this equation

So in conclusion (2,1) is a solution of the system of equations

Hope this helps :)

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3 years ago