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Akimi4 [234]
3 years ago
14

X + y=-4 X +2y=13 Using elimination method

Mathematics
1 answer:
laila [671]3 years ago
6 0
\begin{array}{lrlll}
x+y=-4&\times -1\implies &-x-y=4\\
x+2y=13&\implies &\ x+2y=13\\
&&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\
&&\boxed{?}+\boxed{?}=\boxed{?}
\end{array}
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Math help, thanks for the help. i'm very great full
rodikova [14]

4x +28 and 68 are vertical angles and are equal.

Set them to equal each other to solve for x:

4x +28 = 68

Subtract 28 from each side:

4x = 40

Divide both sides by 4:

x = 40/4

x = 10

4 0
3 years ago
What is the surface area of the square pyramid
Vesna [10]

Answer:

I NEED HELP! What are the dimensions of the rectangle shown below? Remember to use the axes on the coordinate grid to help you.

A coordinate grid is shown with scale from negative 14 to 0 to positive 14 on both x- and y-axes at increments of 2. A figure ABCD is shown with A at ordered pair negative 4, 4, B at ordered pair 10, 4, C at ordered pair 10, negative 4, and D at ordered pair negative 4, negative 4.

Step-by-step explanation:

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3 years ago
Find the quotient. (3. 683 × 104) (7. 51 × 1012) What is the solution in scientific notation? 4. 9041 × (-9)10 4. 9041 × 10-9 4.
ollegr [7]

The value of the expressions (3.683 × 10⁴) and (7.51 × 10¹²) in scientific notation is 4.9041 × 10⁻⁹. Then the correct option is B.

<h3>What is division?</h3>

The division means the separation of something into different parts, sharing of something among different people, places, etc.

The expressions are (3.683 × 10⁴) and (7.51 × 10¹²).

We have to divide (3.683 × 10⁴) from (7.51 × 10¹²).

\dfrac{3.683 * 10^4}{7.51*10^{12}}\\\\0.4904*10^{-8}\\\\4.9041*10^{-9}

More about the division link is given below.

brainly.com/question/369266

6 0
2 years ago
The graph of the function B is shown below. If B(x) = -1, then what is x?
GREYUIT [131]
The answer is c, 2.To find this, look on the graph for a point with the y value of -1. (2,-1) is the solution.
3 0
3 years ago
Read 2 more answers
The domain ofy = x-5 – 1 is
bekas [8.4K]

Answer:

6 i believe

Step-by-step explanation:

delete my question if im wrong:)

6 0
3 years ago
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