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Réponse : Salut
dsl j'ai fait que ca la fin y'avait pas toutes les infos j'ai pas compris.
Explications étape par étape :
A= -12 x (-6) A=76
B=(24-13)x8:4 B= 11x8:4 B=88:4 B=22
C=(-10+1)x(-1.5)-3.5 C= -9x-1.5-3.5 C= 13.5 -3.5 C=10
D= (-13+9.5)x2+7.5+443-7 D= -3.5x2 +443.5 D= -7+443.5 D= 436.5
a. A = 3 x (-4) x (-6)
To calculate A, we multiply the numbers together:
A = 3 x (-4) x (-6)
A = -12 x (-6)
A = 72
b. B = (8x3-13) x 8÷4
First, we perform the multiplication and subtraction within the parentheses:
B = (24 - 13) x 8 ÷ 4
B = 11 x 8 ÷ 4
Next, we perform the division:
B = 88 ÷ 4
B = 22
c. C = (2 x (-5)+1) x (6+ (-7.5)) - 3.5
First, we perform the multiplication and addition within the parentheses:
C = (-10 + 1) x (-1.5) - 3.5
C = (-9) x (-1.5) - 3.5
Next, we perform the multiplication:
C = 13.5 - 3.5
C = 10
d. D = (6.5 x (-2)+9.5) x 2 + 7.5 + 44 3 - 7
First, we perform the multiplication and addition within the parentheses:
D = (-13 + 9.5) x 2 + 7.5 + 44 3 - 7
D = (-3.5) x 2 + 7.5 + 44 3 - 7
Next, we perform the multiplication:
D = -7 + 7.5 + 44 3 - 7
D = 0.5 + 44 3 - 7
Next, we perform the addition and subtraction from left to right:
D = 0.5 + 132 - 7
D = 132.5 - 7
D = 125.5
e. To calculate the given expressions for a = -8, b = -8, and c = -6:
Exercice 2 axb E = -C Vrai ou Faux ? Justifier.
We substitute the given values into the expression:
E = -(-6)
E = 6
Since E is positive (6), and -C is negative (-10), the statement "Exercice 2 axb E = -C" is False.
b. (-8)236 is negative
To calculate A, we multiply the numbers together:
A = 3 x (-4) x (-6)
A = -12 x (-6)
A = 72
b. B = (8x3-13) x 8÷4
First, we perform the multiplication and subtraction within the parentheses:
B = (24 - 13) x 8 ÷ 4
B = 11 x 8 ÷ 4
Next, we perform the division:
B = 88 ÷ 4
B = 22
c. C = (2 x (-5)+1) x (6+ (-7.5)) - 3.5
First, we perform the multiplication and addition within the parentheses:
C = (-10 + 1) x (-1.5) - 3.5
C = (-9) x (-1.5) - 3.5
Next, we perform the multiplication:
C = 13.5 - 3.5
C = 10
d. D = (6.5 x (-2)+9.5) x 2 + 7.5 + 44 3 - 7
First, we perform the multiplication and addition within the parentheses:
D = (-13 + 9.5) x 2 + 7.5 + 44 3 - 7
D = (-3.5) x 2 + 7.5 + 44 3 - 7
Next, we perform the multiplication:
D = -7 + 7.5 + 44 3 - 7
D = 0.5 + 44 3 - 7
Next, we perform the addition and subtraction from left to right:
D = 0.5 + 132 - 7
D = 132.5 - 7
D = 125.5
e. To calculate the given expressions for a = -8, b = -8, and c = -6:
Exercice 2 axb E = -C Vrai ou Faux ? Justifier.
We substitute the given values into the expression:
E = -(-6)
E = 6
Since E is positive (6), and -C is negative (-10), the statement "Exercice 2 axb E = -C" is False.
b. (-8)236 is negative