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hodyreva [135]
2 years ago
6

48 kilometers in 3 hours =

Mathematics
2 answers:
Genrish500 [490]2 years ago
6 0
16 kilometer an hour
lana [24]2 years ago
3 0
U think its 16 kilometer in hour
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torisob [31]

Step-by-step explanation:

25 is the answer . hope it helps

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using integer to describe the situation 12 protons and an atom blank 18 electrons around an atom blank​
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Determine the general solution of:<br><br> sin 3x - sin x = cos2x
SpyIntel [72]
Sin³ x-sin x=cos ² x

we know that:
sin²x + cos²x=1  ⇒cos²x=1-sin²x
Therefore:

sin³x-sin x=1-sin²x
sin³x+sin²x-sin x-1=0

sin³x=z

z³+z²-z-1=0

we divide by Ruffini method:
              1     1     -1     -1
        1           1      2      1                z=1
-------------------------------------
              1     2      1      0
       -1         -1      -1                       z=-1
--------------------------------------
              1     1       0                       z=-1

Therefore; the solutions are z=-1 and z=1

The solutions are:
if z=-1, then
sin x=-1   ⇒x= arcsin -1=π+2kπ    (180º+360ºK)   K∈Z


if z=1, then
sin x=1   ⇒ x=arcsin 1=π/2 + 2kπ   (90º+360ºK)   k∈Z

π/2 + 2kπ    U   π+2Kπ=π/2+kπ     k∈Z    ≈(90º+180ºK)

Answer: π/2 + Kπ    or     90º+180ºK          K∈Z
Z=...-3,-2,-1,0,1,2,3,4....
6 0
3 years ago
Plz help! free brainlist and points! plz dont send wrong answers or false links<br> solve: 3x +7 =-8
asambeis [7]

Answer:

-5

Step-by-step explanation:

3x+7=-8

3x+7-7=-8-7

3x=-15

3x/3=-15/3

x= -5

5 0
2 years ago
Read 2 more answers
Is there a relationship between the area and the perimete of a rectangle. Explain
Nady [450]
The area is another way of say perimeter. it's the inside area of the rectangle
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2 years ago
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