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lawyer [7]
2 years ago
15

6 Résolvez les équations suivantes.

Mathematics
1 answer:
Degger [83]2 years ago
5 0

Step-by-step explanation:

a) x + 4 = 12

=> x + 4 - 4 = 12 - 4

=> x = 8

d) - 14 = 2x

=> -14/2 = 2x/2

=> -7 = x

x = -7

b) x + 5,1 = x + x

1 = x + x

1 = 2x

1/2 = 2x/2

x = 1/2 or 0.5

e) 5 = 4x

=> 5/4 = 4x/4

=> x = 5/4 or 0.8

c) 6x = x - 15

=> x - 15 = 6x

=> -15 = 6x - x

=> -15 = 5x

=> -15/5 = 5x/5

=> x = -3

f) x + 8 = 2x + 3

x+8=2x+3

x+8−2x=2x+3−2x

−x+8=3

−x+8−8=3−8

−x=−5

−x/−1 = −5/−1

x=5

J'espère que cela vous aidera, si vous avez d'autres problèmes, dites-le moi

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All the boxes in a certain warehouse were arranged in stacks of 12 boxes each, with no boxes left over. After 60 additional boxe
AveGali [126]

Answer:

(1) There were fewer than 110 boxes in the warehouse before the 60 additional boxes arrived. (2) There were fewer than 120 boxes in the warehouse after the 60 additional boxes arrived.

Step-by-step explanation:

Given that all the boxes in a certain warehouse were arranged in stacks of 12 boxes each, with no boxes left over.

This implies that boxes are in multiples of 12

i.e. 12, or 24, or 36 or....

Let us say this as 12m for m an integer

Now additional boxes arrived =60

Total number of boxes now = 12m+60

This when arranged in stacks of 14,nothing left out

Or this is multiple of 14

12m+60 = 14n for some positive integer n.

By trial and error we find that if 60 is to be divided by 14, 24 should be added and 24 is a multiple of 12.

So we say originally 24 boxes were there now 84 boxes there.

Hence both options are right.

(1) There were fewer than 110 boxes in the warehouse before the 60 additional boxes arrived. (2) There were fewer than 120 boxes in the warehouse after the 60 additional boxes arrived.

3 0
3 years ago
The perimeter of quadrilateral is 58 centimeters. If the lengths of three sides are 14 cm, 15 cm, and 17 cm, what is the length
kicyunya [14]

Answer:

12

Step-by-step explanation:

15 + 14 + 17= 46

58 - 46= 12

hope this helps! xoxo raina

4 0
2 years ago
Which expression are equivalent to 2r+(t+r)
umka21 [38]
Simplified, it is 3r+t.
3 0
3 years ago
a plant is already 15.25 meters tall and it will grow 20 centimeters every month the plants height h(in meters) after x months i
Lapatulllka [165]

Answer:

H= 121.25 meters

Step-by-step explanation:

To find the value of H after 30 months given the equation H=0.20x+115.25,

replace x by 30 in the equation and solve;

H=(0.20*30)+115.25

H=6+115.25

H= 121.25 meters

Therefore, the height will be 121.25 meters

6 0
3 years ago
Create a factorable polynomial with a GCF of 2. Rewrite that polynomial in two other equivalent forms. Explain how each form was
earnstyle [38]
 4x^2 + 8x + 12

Equivalent forms: x^2 + 2x + 3 and 8x^2 + 16x + 24.

The first equivalent form was created by dividing each term by 2, and the second equivalent form was created by multiplying each term by 2.
5 0
3 years ago
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