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Grace [21]
3 years ago
8

3x + 2y = -9 X – Y = -13

Mathematics
1 answer:
salantis [7]3 years ago
3 0

Answer:

x =-7. .y=6

Step-by-step explanation:

3x + 2y = -9

(X – Y = -13)×3

3x + 2y = -9

3x – 3y = -39

5y = 30

y=6

3x +2(6)=-9

3x=-21

x=-7

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3 years ago
Every parallelogram is a square?
saul85 [17]

Answer:

every parallelogram is a square? False

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Step-by-step explanation:

every parallelogram is a square?

A parallelogram has two opposite pairs of parallel lines and opposite congruent sides. A square needs to have 4 right angles and all sides need to be equal. In the restrictions of a parallelogram, these cannot be concluded, therefore parallelogram are not always squares.

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every quadrilateral is a rectangle?​

A quadrilateral is a just a shape with four sides. We do not know if it has 4 right angles, so not every quadrilateral is a rectangle.

5 0
3 years ago
Does (5, 10)make the inequality y ≥ 10x+5 true
Salsk061 [2.6K]

Answer:

It is False.

Step-by-step explanation:

When you substitute the coordinates into the inequality equation :

y \geqslant 10x + 5

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5 0
3 years ago
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