The answer is 187/660
Or about 0.28
Answer:
48 dias
Step-by-step explanation:
1000 gramas = 1 kg
A quantidade inicial de areia = 40kg
1 kg = 1000g
40kg = x
Multiplicação cruzada
1 kg × x = 40 kg × 1000g
x = 40 kg × 1000g / 1 kg.
x = 40,000 gramas
Somos informados de que 2/5 se esgotou.
Quantidade que foi drenada =
40,000 × 2/5
= 16,000 gramas foram drenados
Quantidade restante = 40,000 gramas - 16,000 gramas
= 24,000 gramas
A areia escoa a 500g por dia, portanto,
500g = 1 dia
24,000g = x
Multiplicação cruzada
500g × x = 24, 000 × 1
x = 24,000 g × 1 dia / 500
x = 48 dias
Restariam 48 dias para que a areia restante vazasse.
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Ratio Given :
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AB : AC = 1 : 2
⇒ 2(3x - 4) = 2x + 12
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Solve for x :
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2(3x - 4) = 2x + 12
6x - 8 = 2x + 12
4x = 20
x = 5
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Find AC:
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AC = 2x + 12
AC = 2(5) + 12
AC = 22
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Find BC:
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BC = 7x - 2
BC = 7(5) - 2
BC = 33
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Find ratio :
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AC : BC
22 : 33
(÷11) (÷11)
2 : 3
Ratio of AC : BC = 2 : 3 (Shown)
Answer: A. intersecting
Step-by-step explanation:
1. To solve this problem and classify the system of equations shown above, you can graph it has you can see in the graph attached.
2. As you can see the lines intersect each other, this means that the system of equation has one solution and the lines are intersecting.
3. Therefore, the answer is the option A: Intersecting.