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Anon25 [30]
3 years ago
11

The point,(-2,3) is a solution to the following system. y>-2x-2 and y< 3true or false​

Mathematics
2 answers:
WINSTONCH [101]3 years ago
8 0

Answer: FALSE.

Step-by-step explanation:

Given the system of inequalities:

\left \{ {{y>-2x-2} \atop {y< 3}} \right.

We can know if the point (-2,3) is a solution to the following system with the graph of the system of inequalities.

 By definition the solution is the intersection region of all the solutions of the system of inequalities.

Knowing this and analizing the graph attached, we can notice that the point (-2,3) is not included in the intersection region (Remember that with symbols "<" and ">" the lines are dashed and any point that lines of these lines is not included in the intersection region).

Therefore, it is not a solution to the system.

bija089 [108]3 years ago
4 0

Answer:

false

Step-by-step explanation:

y>-2x-2

3>-2(-2) -2

3>4 -2

3>2

y< 3

3< 3

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stepan [7]

Given:

The coordinates of ∆ABC are A(-3, 2), B(5, 8) & C(11, 0).

To find:

The type of the given triangle.

Solution:

Distance formula:

D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Using the distance formula, we get

AB=\sqrt{(5-(-3))^2+(8-2)^2}

AB=\sqrt{(8)^2+(6)^2}

AB=\sqrt{64+36}

AB=\sqrt{100}

AB=10

Similarly,

BC=\sqrt{(11-5)^2+(0-8)^2}

BC=\sqrt{(6)^2+(8)^2}

BC=\sqrt{36+64}

BC=\sqrt{100}

BC=10

And,

AC=\sqrt{(11-(-3))^2+(0-2)^2}

AC=\sqrt{(14)^2+(-2)^2}

AC=\sqrt{196+4}

AC=\sqrt{200}

AC=10\sqrt{2}

Two sides of the triangle are equal, i.e., AB=BC. So, the triangle is an isosceles triangle.

Sum of square of two smaller side is

AB^2+BC^2=10^2+10^2

AB^2+BC^2=100+100

AB^2+BC^2=200

AB^2+BC^2=AC^2

Using the Pythagoras theorem, we can say that the given triangle is a right triangle.

Therefore, the correct options are B and F.

7 0
3 years ago
Please help and I suck at doing assignment with quadratic functions-
bogdanovich [222]

Answer:

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Step-by-step explanation:

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Vaselesa [24]

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fomenos

Answer:

192

Step-by-step explanation:

6(3+5)4

3+5=8

6(8)4

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weeeeeb [17]

Answer:

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Step-by-step explanation:

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