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Alekssandra [29.7K]
3 years ago
9

A diver descend 15 feet below sea level. She then ascends 7 feet. What is the depth of the diver in terms of sea level

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
5 0
8 feet below sea level because -15+7=-8
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7 divided by 0.623 no need to explain thx
barxatty [35]

Answer:

11.235955

Step-by-step explanation:

7÷0.623

11.235955

8 0
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What is the precision measurement of 80 inches?
lawyer [7]
The precision is 10 inches. This is because the 0 at the end of the number is not considered a significant digit in the form in which the number is written, and hence "80 inches" is to be considered a roundoff from a number which can be from 75-85 inches.
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Andy is buying a car he negotaited a 7% descrease on £6500 car. he will pay the full balance in 12 equal monthly payments.
Firlakuza [10]

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he would pay 503.75 every month

Step-by-step explanation:

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Is k + 12 greater than or equal to 20 , k= 15
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Step-by-step explanation:

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Un entrepreneur en construction vient d'embaucher deux équipes d'ouvriers. Nommons-les l'équipe A et l'équipe B.
Irina18 [472]

Answer:

Le nombre de jours qu'il faudra à l'équipe A pour terminer le projet si elle travaillait seule est de 10 jours

Le nombre de jours qu'il faudra à l'équipe B pour terminer le projet si elle travaillait seule est de 15 jours

Step-by-step explanation:

Ici nous avons;

Temps pour l'équipe A et B pour terminer la tâche = 6 jours

L'équipe A + l'équipe B pour les deux premiers jours, il faudra 10 jours à l'équipe B pour terminer le travail

Que le projet soit P

Taux de travail de l'équipe A = W₁

Taux de travail de l'équipe B = W₂

∴ W₁ × 6 + W₂ × 6 = P ..................... (1)

W₁ × 2 + W₂ × 12 = P ....................... (2)

Par conséquent, W₁ = (P - 6 · W₂) / 6

En substituant la valeur de W₁ dans (2) nous avons

 Qui donne;

15 · W₂ = P

Par conséquent, il faudra 15 jours à l'équipe B pour terminer le projet si elle travaille seule et branche la valeur de l'équation (1), nous avons;

10 · W₁ = P

Par conséquent, il faudra 10 jours à l'équipe A pour terminer le projet si elle travaille seule.

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