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3 years ago

Help me !!!! Acute Right Obtuse

Mathematics

2 answers:

Arlecino [84]3 years ago

7 0

Answer:

Right angle

Step-by-step explanation:

It is not acute because the angles is not that small. And It is not obtuse because the angles is not small. If you do a² + b² = C² you get 16. So if all the triangle on your test look like that and the numbers are different then the triangle is obtuse. If not then it is a right angle and 16 is close to 15.

Svet_ta [14]3 years ago

3 0

This is a Right Angle.

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Solve the system of equations

Veseljchak [2.6K]

Answer:

Option c is right:

(-6 , 2)

Step-by-step explanation:

( -6 , 2)

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3 years ago

Y=-x^2+6x-4 Find the Axis of Symmetry and the Vertex, Also solve the whole equation.

Inessa [10]

Answer:

1. Axis of symmetry: x = 3

2. Vertex: (3,5)

3. Solution of the equation:

x-intercepts:

$(3-\sqrt{5},0) \\\\(3+\sqrt{5},0)$

y-intercept: (0, -4)

Explanation:

1. Equation:

$y=-x^2+6x-4$

2. Axis of symmetry:

That is the equation of a parabola, whose standard form is:

$y=ax^2+bx+c$

Where:

$a=-1;b=6;c=-4$

The axis of symmetry is the vertical line with equation:

$x=-b/2a$

Substitute $a=-1,\text{ and }b=6$

$x=-6/[(2)(-1)]=-6/(-2)=3$

Thus, the axis of symmetry is:

$x=3$

3. Vertex

The x-coordinate of the vertex is equal to the axys of symmetry, i.e x = 3.

To find the y-xoordinate, substitute this value of x into the equation for y:

$y=-x^2+6x-4\\\\y=-(3)^2+6(3)-4=-9+18-4=5$

Therefore, the vertex is (3, 5)

4. Find the x-intercepts

The x-intercepts are the roots of the equation, which are the points wher y = 0.

$y=-x^2+6x-4=0$

Use the quadratic equation:

$x=\frac{-b\pm \sqrt{b^2-4ac} }{2a} \\\\x=\frac{-6\pm\sqrt{(-6)^2-4(-1)(-4)} }{2(-1)}\\\\x_1=3-\sqrt{5} \\\\x_2=3+\sqrt{5}$

5. Find the y-intercept

The y-intercet is the value of y when x=0:

$y=-x^2+6x-4\\\\y=-(0)^2+6(0)-4=-4$

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4 years ago

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WARRIOR [948]

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3 years ago

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Debora [2.8K]

Answer:

A. 12 miles

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D. 5 hours

E. Max did not move

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Step-by-step explanation:

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3 years ago

What number + (−56)=12 How do I do this?

Mars2501 [29]

Answer:

Step-by-step explanation:

x+(-56)=12

exclude "x"

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3 years ago

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