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2 years ago

Which graph shows the solutions to x^2+3x-1 ≥ 0

Mathematics

2 answers:

spayn [35]2 years ago

6 0

Answer:

if i'm not mistaken the answer is B

Finger [1]2 years ago

6 0

Answer:

Ans for the solution is B

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1) prove that the circumcenter of an equilateral triangle is the same as its centroid i) calculate the length of the side of an

Juliette [100K]

Answer:

The complete explanation and solution is attached below:

Explanation:

4 0

3 years ago

What is the vertex of the graph of the function y=-2x^2+16x-15

andrey2020 [161]

X - Vertex
$Vertex = -\frac{b}{2a} \\Vertex = -\frac{16}{2(-2)} \\Vertex = -\frac{16}{-4} \\Vertex = 4$

Y - Vertex
$y = -2x^{2} + 16x - 15 \\y = -2(4)^{2} + 16(4) - 15 \\y = -2(16) + 64 - 15 \\y = -32 + 64 - 15 \\y = 32 - 15 \\y = 17$

Vertex:(4, 17)

8 0

3 years ago

AB lies on a number line. The coordinate of point A is -6. Given that AB=20, what are two possible coordinates for point B?

Dafna1 [17]

Answer:

-26 or 14

Step-by-step explanation:

Given that

Coordinate of point A is -6.

Length of AB = 20

To find:

Coordinates for the point B = ?

Solution:

We are given that:

AB = 20

In other words, we can use modulus function to define the distance between A and B:

|Coordinates of B - Coordinates of A| = 20

Let the coordinates of B = $x$

Kindly refer to the attached image for the given situation.

Point B might be either on the left or on the right side of A.

That means:

$|x-(-6)| = 20\\\Rightarrow |x+6|=20$

Now, let us have a look at the modulus function:

$|y|=\left \{ {-{y}\ if\ y0} \right.$

So,

$|x+6|=\left \{ {-{(x+6)}\ if\ (x+6)0} \right.$

$(x+6 ) =20\\\Rightarrow x =14$

$-(x+6 ) =20\\\Rightarrow x =-26$

Therefore, the answer is:

-26 or 14

4 0

3 years ago

Describe the faces, edges, verticals of each three dimensional figure. Then identify it.

EastWind [94]

When you have to describe a 3D shape you have to keep the following definitions in mind:

1. The face of a 3D shape is a flat surface.

The shape on the picture has 3 rectangular faces and 2 triangular faces, a total of 5 faces.

2. The edge is where two faces meet.

For the shape on the picture, there are 3 edges, where the rectangular faces meet each other, and then three edges where the rectangular faces meet each of the triangular faces, this shape has a total of 9 edges.

3. The vertex is a corner, where the edges meet.

There are three vertices on each end of the shape, so it has a total of 6 vertices.

A shape that has 5 faces, 9 edges, and 6 vertices is a triangular prism.

6 0

1 year ago

Need help with numbers 8 and 9

ikadub [295]

Answer:

did not understand ur q.a

3 0

3 years ago