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ololo11 [35]
2 years ago
5

Qué características tiene un rombo

Mathematics
1 answer:
Dominik [7]2 years ago
6 0

Answer:

Un rombo es cualquier paralelogramo con cuatro lados congruentes, cuatro ángulos y cuatro vértices. Tiene la forma de un diamante y una cometa

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I need help.. A diameter of a circle has endpoints p(-10, -2) and q(4, 6)
Phoenix [80]

A: The center is the mid point of the diameter. So, the center of the circle will be the midpoint of points P and Q. The coordinates of the midpoint are the averaged coordinates of the endpoints.

So, the x-cooardinate of the center is the average of the x-coordinates of P and Q:

C_x = \dfrac{P_x+Q_x}{2}=\dfrac{-10+4}{2}=\dfrac{-6}{2}=-3

Try to do the same thing with the y coordinates, and you'll get the y-coordinate C_y. This first part will be over, because the circle will be point

C=(C_x,C_y)

B: The radius is exactly half the diameter. So, we find the length of the diameter, and we divide it by 2. To find the length of the diameter, we use the standard formula for the distance between two points:

d=\sqrt{(P_x-Q_x)^2+(P_y-Q_y)^2}=\sqrt{(-10-4)^2+(-2-6)^2}=\sqrt{260}=2\sqrt{65}

Divide this length by 2 and you'll get the radius.

C: At this point, we have both the radius and the coordinates of the center. The equation of the circle depends on these two parameters, and it is

(x-C_x)^2+(y-C_y)^2=r^2

Substitute C_x and C_y with the coordinates of the center (found in point A.) and r with the radius (found in point B.) and you'll have the equation of the circle.

6 0
3 years ago
What is the solution of 4−6x≥−8 A.) x≥2 B.) x≤23 C.) x≤2 D.) x≤−2
Alenkasestr [34]

Answer: I cant tell which one is a or b or c or d but ill say its b

5 0
3 years ago
Read 2 more answers
Ask Your Teacher The circumference of a sphere was measured to be 90 cm with a possible error of 0.5 cm. (a) Use differentials t
SCORPION-xisa [38]

Answer:  

a)  28,662 cm²  max error

    0,0111     relative error

b) 102,692 cm³  max error

   0,004     relative error

   

Step-by-step explanation:

Length of cicumference is: 90 cm

L = 2*π*r

Applying differentiation on both sides f the equation

dL  =  2*π* dr    ⇒  dr = 0,5 / 2*π

dr =  1/4π

The equation for the volume of the sphere is  

V(s) =  4/3*π*r³     and for the surface area is

S(s) = 4*π*r²

Differentiating

a) dS(s)  =  4*2*π*r* dr    ⇒  where  2*π*r = L = 90

Then    

dS(s)  =  4*90 (1/4*π)

dS(s) = 28.662 cm²   ( Maximum error since dr = (1/4π) is maximum error

For relative error

DS´(s)  =  (90/π) / 4*π*r²

DS´(s)  = 90 / 4*π*(L/2*π)²      ⇒   DS(s)  = 2 /180

DS´(s) = 0,0111 cm²

b) V(s) = 4/3*π*r³

Differentiating we get:

DV(s) =  4*π*r² dr

Maximum error

DV(s) =  4*π*r² ( 1/  4*π*)   ⇒  DV(s) = (90)² / 8*π²

DV(s)  =  102,692 cm³   max error

Relative error

DV´(v) =  (90)² / 8*π²/ 4/3*π*r³

DV´(v) = 1/240

DV´(v) =  0,004

3 0
3 years ago
Read 2 more answers
Will mark brainliest plz help!
Elan Coil [88]

Answer:

56

Step-by-step explanation:

hope it helps

4 0
3 years ago
WILL GIVE BRAINLIEST ANSWER !! NEED HELP QUICK !!
k0ka [10]

Answer:

its letter A

Step-by-step explanation:

8 0
3 years ago
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