Question

Tolong yaa tolonf bgt,no 8 sd 10
Maaff

Answer 1

Verified answer

8) 65,79 = ( 1 × y ) + ( 4 × 41 ) + ( 5 × 64 ) + ( 8 × 66 ) + ( 12 × 70 ) + ( 6 × 75 ) + ( 2 × 80 ) / ( 1 + 4 + 5 + 8 + 12 + 6 + 2 )
65,79 = ( y + 164 + 320 + 528 + 840 + 450 + 160 ) / 38
65,79 × 38 = y + 2462
2500,02 = y + 2462
y = 2500,02 - 2462
y = 38,02
y = 38
y + 2 = 38 + 2 = 40

29) rata² = ( 1 × 4 ) + ( 2 × 5 ) + ( 2 × 6 ) + ( 1 × 7 ) + ( 2 × 8 ) + ( x + y ) / ( 1 + 2 + 2 + 1 + 2 + 2 )
6,2 = ( 4 + 10 + 12 + 7 + 16 + x + y ) / 10
6,2 × 10 = 49 + x + y
62 - 49 = x + y
13 = x + y

30) 6,5 = ( 4 + 4 + 5 + 6 + 6 + 7 + 8 + 10 + a + b ) / 10
6,5 × 10 = 50 + a + b
65 - 50 = a + b
a + b = 15
5 ( a + b ) = 5 × 15 = 75 ( D )