Answers ( 10 )
  • See question detail

    The edge length of the cube is :

    3√2162163 = 6 (cm) because 6 x 6 x 6 = 216 

    The area is :

    6 x 6 = 36 (cm2)

  • See question detail

    The distance between the houses is: 3000: 100 = 30 (minute)
    Homeownership is: 3000: 150 = 20 (minutes)
    Average by John in a minute: 3000: (20 + 30) = 60 (minute)

    Answers:60 minute

  • See question detail

    The distance between the houses is: 3000: 100 = 30 (minute)
    Homeownership is: 3000: 150 = 20 (minutes)
    Average by John in a minute: 3000: (20 + 30) = 60 (minute)

    Answers:60 minute

  • See question detail

    The odd number between the six remaining numbers is:

    1337 : 7 = 191

    So 7 consecutive numbers are 185 ; 187 ; 189 ; 191 ; 193 ; 195 ; 197

  • See question detail

    The second equation give  y=3x4y=3x4, the thirst give  z=3x2z=3x2. Subsitute these values for the first equation we have    x+3x4−3x2=4⇔x=16x+3x4−3x2=4⇔x=16. So  x=16,y=12,z=24x=16,y=12,z=24

     
  • See question detail

    (1−12)(1−13)(1−14)...(1−12017)<=>12.23.34....20162017=1.2.3...20162.3.4...2017=12017(1−12)(1−13)(1−14)...(1−12017)<=>12.23.34....20162017=1.2.3...20162.3.4...2017=12017

    Value of the expression is 12017

     
  • See question detail

    (1−12)(1−13)(1−14)...(1−12017)<=>12.23.34....20162017=1.2.3...20162.3.4...2017=12017(1−12)(1−13)(1−14)...(1−12017)<=>12.23.34....20162017=1.2.3...20162.3.4...2017=12017

    Value of the expression is 12017

     
  • See question detail

    ( x + 1 ) . ( 1 + 1999 ) = 4000

    x + 1 = 4000 : ( 1 + 1999 )

    x  + 1 = 4000 : 2000

      x + 1 = 2 

       x = 2 - 1 

      x = 1 

    Thank you 
     
  • See question detail

    Give : x−12=y+34=z−56=kx−12=y+34=z−56=k

    ⇒⎧⎪⎨⎪⎩x=2k+1y=4k−3z=6k+5⇒{x=2k+1y=4k−3z=6k+5

    Change x,y,z into 5z - 3x - 4y = 50 , we have :

    5(6k + 5) - 3(2k + 1) - 4(4k - 3) = 50

    30k + 25 - 6k - 3 - 16k + 12 = 50 

    8k + 34 = 50

    8k = 16

    => k = 2

    ⇒⎧⎪⎨⎪⎩x=2k+1=2.2+1=5y=4k−3=4.2−3=5z=6k+5=6.2+5=17

  • See question detail

    Give : x−12=y+34=z−56=kx−12=y+34=z−56=k

    ⇒⎧⎪⎨⎪⎩x=2k+1y=4k−3z=6k+5⇒{x=2k+1y=4k−3z=6k+5

    Change x,y,z into 5z - 3x - 4y = 50 , we have :

    5(6k + 5) - 3(2k + 1) - 4(4k - 3) = 50

    30k + 25 - 6k - 3 - 16k + 12 = 50 

    8k + 34 = 50

    8k = 16

    => k = 2

    ⇒⎧⎪⎨⎪⎩x=2k+1=2.2+1=5y=4k−3=4.2−3=5z=6k+5=6.2+5=17

  • View more →
Questions ( 0 )