Question

pagina 14 porfavor ayudenme gracias

c62d32f5ec4da54dc5c563cf2f2e75d8.pdf

Answer 1

a) 43.5 ; b) 30.7; c) -12.8; d) 41;e)34.6 ; f) 0.1 ; g) 217.6 ; h) -19.1 ; i) 18.9 ; j) -32.75 ; k) 412.2 ; l) 72; m) -22.98; n)41 ;o) 8.36 ;p) 53.4 ; q) 92.5 ; r) 32.8 ; s) 104.2;t) 58.25;u) -35.6; v) 27.3; w) 75.3; x) 2.06 ; y) 1 ; z = 18.44.

Al simplificar las siguientes expresiones, resolviendo las operaciones en el orden correspondientes:

a) 4.5 +5*9 - 6 = 4.5 +45-6 = 43.5

b) 2.3 *5 +3.2*6 = 11.5+ 19.2 = 30.7

c) 4 -2.4*7 = 4 - 16.8 = -12.8

d) 8*2.5 +4.2*5 = 20+21 = 41

e) 7.6 + 3*9 = 7.6 + 27 = 34.6

 f) 12.5 - 4*3.1 = 12.5 - 12.4 = 0.1

 g) 3.4*8² + 3*6 -18 = 3.4*64 +18 -18 = 217.6

 h) 7*(-4) +8.9 = -28 +8.9 = -19.1

  i) 6.3  + 4.2*(3)= 6.3 + 12.6 = 18.9

  j) 6 + 5*(-4)-3*(6.25)= 6 -20 - 18.75 = -32.75

 k) 3² + 4*(12.6)*(8) = 9 + 403.2 = 412.2

 l) 5*(4²) + 2*(3.5)-15 = 80 + 7 -15 = 72

 m) 3*(2.6²) -6*(7.21)= 3*6.76 - 43.26 = 20.28 - 43.26 = -22.98

  n) 5 + 3*( 4+8) = 5 + 3* 12 = 5 +36 = 41

  o) ( 4.5+8.6 ) +( 5.06 -9.8 ) = 13.1 - 4.74 = 8.36

  p) 3* ( 5.4 +3.2) -4*(2.9 -9.8) = 3*8.6 -4*(-6.9)= 25.8 + 27.6 = 53.4

  q) 3.5 + 4*[ 6 + ( 7.25 +9) ] = 3.5 + 4*[ 6 + 16.25 ] = 3.5 +4*[22.25]= 3.5 +89 = 92.5

 r) 5.6 -2*[ 5 - ( 8.6 +10) ] = 5.6 - 2* [ 5- 18.6 ] = 5.6 -2*[ -13.6 ] = 5.6 + 27.2 = 32.8

s) 8 + { 3.8 + 4 * [ 6 +  (12.6 +4.5 ) ]}= 8 + { 3.8 + 4*[ 6 + 17.1 ] } = 8 + { 3.8 + 4* 23.1 ]} = 8 + { 3.8 + 92.4 }  = 8 + 96.2 = 104.2

 t ) 2.5 * ( 12.3 +5 ) + { 9 + 4 [ 6 - ( -4.5+9 ) ]} = 2.5 * ( 17.3 ) + { 9 + 4[ 6 -4.5 ]}

   = 43.25 + { 9 + 6 } = 43.25 + 15 = 58.25

 u) 4( 8 +2.5) + { 5 -6[ 2 -(-3.6 -8.2)]} = 4( 10.5 ) + { 5 - 6[ 2 +11.8 ]} = 42 + {5 -6[13.8 ]} = 42 + { 5  -82.6} = 42 +{ -77.6} = -35.6

  v) { 2.3 -3[ 4 +2( -7)] }-5= { 2.3 -3[ 4 -14]}-5 = { 2.3 -3[ -10] } -5= { 2.3 +30 }-5 = 32.3 -5 = 27.3

  w) {5.3 + 3[ 5-4( -2.5 ) ]} +25 = { 5.3 +3 [ 5+ 10] } +25 = { 5.3 + 3[15]}+25 = {5.3+45}+25 = 50.3 +25 = 75.3

  x) ( 0.5 +3*5 ) ÷(2.5*3)= ( 0.5 +15) ÷(7.5 ) = (15.5 ) ÷(7.5)= 2.06

  y ) 3[ 5 -4( -2.5) ] ÷3( 5 + 2*5) = 3[ 5+10]÷3(5+10)= 3[ 15]÷3(15)= 45÷45 = 1

  z) { 6.7-3[ 3-( -2.5+6.5)]} + 2( 3.25 +1.12) = { 6.7 -3[ 3 -4 ] } +2(4.37 ) = {6.7 -3[-1] }+8.74 = { 6.7 +3 } +8.74 = 9.7 +8.74 = 18.44 .