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bija089 [108]
3 years ago
12

Which expression is equivalent to

Mathematics
1 answer:
iris [78.8K]3 years ago
6 0
The answer is A) 7j + 4k + 15
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Solve the system of equations x - 2y = – 7 and -3x – 2y = 29 by combining the<br> equations.
Ksivusya [100]

Answer:

x = - 9, y = -1

Step-by-step explanation:

<em>Given:</em>

<em />\begin{bmatrix}x-2y=-7\\ -3x-2y=29\end{bmatrix}

Solve:

\mathrm{Substitute\:}x=-7+2y

\begin{bmatrix}-3\left(-7+2y\right)-2y=29\end{bmatrix}

\begin{bmatrix}21-8y=29\end{bmatrix}

\mathrm{For\:}x=-7+2y

\mathrm{Substitute\:}y=-1

x=-7+2\left(-1\right)

x=-9

\mathrm{Thus, Answer:x=-9,\:y=-1}

[RevyBreeze]

5 0
3 years ago
If the diagonals of a parallelogram from right angles,then the parallelogram is the rectangle
geniusboy [140]

The statement above is false.


If the diagonals of a parallelogram form right angles, then the parallelogram is a rhombus (a rhombus is a quadrilateral with four equal side lengths).


Note* = by saying the statement is false is not saying that the scenario presented in the statement cannot occur. If the rectangle was a square, then its diagonals can form right angles since a square is also a rhombus. However, if a rectangle was NOT a square, its diagonals would not form right angles. A true statement is a statement where ALL cases fit the said requirement(s).


The statement can also be corrected by saying:

If the diagonals of a parallelogram are congruent, then the parallelogram is a rectangle.


All rectangles (even a square) have congruent diagonals, so this statement would be true.


Hope this helps!

8 0
3 years ago
Which room cant you ever enter
zepelin [54]

Answer:

Maths room

Step-by-step explanation:

because it is the best room.

6 0
3 years ago
Tracy can download 24 songs in 10 minutes. At this rate, how many songs can she download in half an hour?
Paul [167]

Answer:

Me

Step-by-step explanation:

Fshshzbshuwuzydgyd

4 0
3 years ago
Read 2 more answers
Find three consecutive numbers if their sum is 1,353​
steposvetlana [31]

Answer: 450 plus 451 plus 452 = 1,353.

Step-by-step explanation:

4 0
3 years ago
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