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lesantik [10]
3 years ago
12

Someone explain please

Mathematics
1 answer:
Gwar [14]3 years ago
7 0

Answer:

Step-by-step explanation:

if the triangle is standing on a vertex and not on a side (base) then the height changes. But the altitude always remains the same

Altitude is the perpendicular line drawn from a vertex of a triangle to its opposite side. But, the median is just a line drawn from a vertex of a triangle to the midpoint of the opposite side of the triangle.

Perpendicular bisector theorem deals with congruent segments of a triangle, thus allowing for the diagonals from the vertices to the circumcenter to be congruent. Whereas the angle bisector theorem deals with congruent angles, hence creating equal distances from the incenter to the side of the triangle.

The point of intersection of the three medians of a triangle is the centroid, while the perpendicular bisectors of the three sides of the triangle determines the circumcentre.

A circle inscribed inside a triangle is called the in-center, and has a center called the incenter. A circled drawn outside a triangle is called a circumcircle, and it's center is called the circumcenter

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A solution of phosphoric acid has a boiling point of degrees Celsius. What is the boiling point of the solution in degrees Fahre
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212 degrees Fahrenheit.

Step-by-step explanation:

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3 years ago
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Find the x-intercepts of the parabola with
12345 [234]

Answer:

x-intercepts are (0, 0) and (-6, 0)

Step-by-step explanation:

equation of a parabola in vertex form:  y = a(x - h)² + k

where (h, k) is the vertex

Substituting the given vertex (-3, -18) into the equation:

y = a(x + 3)² - 18

If the y-intercept is (0, 0) then substitute x=0 and y=0 into the equation and solve for a:

0 = a(0 + 3)² - 18

⇒ 0 = a(3)² - 18

⇒ 0 = 9a - 18

⇒ 9a = 18

⇒ a = 2

Therefore, y = 2(x + 3)² - 18

To find the x-intercepts, set the equation to 0 and solve for x:

                                 2(x + 3)² - 18 = 0

Add 18 to both sides:     2(x + 3)² = 18

Divide both sides by 2:    (x + 3)² = 9

Square root both sides:      x + 3 = ±3

Subtract 3 from both sides:  x = ±3 - 3

so x = 3 - 3 = 0  

and  x = -3 - 3 = -6

So x-intercepts are (0, 0) and (-6, 0)

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2 years ago
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Which values of x are solutions to the equation below 3x^2-42=33
Aliun [14]

5 and -5

<em>I hope I helped you with your solution! If I did, please give me Brainliest, and click the "thanks" button! It would truly make my day!</em>

6 0
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6 ten thousand 5 hundred x10
castortr0y [4]

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60,500

Step-by-step explanation:

6 0
3 years ago
The temperature at a point (x,y,z) is given by t(x,y,z)=200e−x2−y2/4−z2/9t(x,y,z)=200e−x2−y2/4−z2/9, where tt is measured in deg
yulyashka [42]
First find the gradient by using partial derivatives.

T_x = (-2x)200 e^{(-x^2 -y^2/4 -z^2/9)} \\  \\ T_y = (-\frac{1}{2}y)200 e^{(-x^2 -y^2/4 -z^2/9)} \\  \\ T_z = (-\frac{2}{9}z)200 e^{(-x^2 -y^2/4 -z^2/9)}

Sub in given point (0,-1,2) for x,y,z
∨T = (T_x, T_y,T_z) = (0,100e^{-25/36, \frac{-800}{9} e^{-25/36})

Next, find unit vector from directional vector (0,-1,2) --> (-3,4,-3)
v = (-3-0, 4-(-1), -3-2) = (-3,5,-5) \\  \\ ||v|| = \sqrt{(-3)^2 + 5^2 + (-5)^2} = \sqrt{59} \\  \\ u = (\frac{-3}{\sqrt{59}}, \frac{5}{\sqrt{59}},\frac{-5}{\sqrt{59}})

Finally, use dot product on gradient and unit vector to get directional rate of change.
Answer is approx 61.398 
8 0
3 years ago
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