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N76 [4]
3 years ago
15

If x+3/3 = y+2/2, then x/3 =​

Mathematics
1 answer:
Kisachek [45]3 years ago
8 0

Answer:

y/3

Step-by-step explanation:

x + 3/3 = y + 2/2

x + 1 = y + 1

x = y + 1 - 1

x = y + 0

x = y

so; x/3 = y/3

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where's the question

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3 years ago
At school 161 students play at least one sport.This is 70% of the number of the student at the school. How many suenos are at th
kondor19780726 [428]
X=number total of student at the school.
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can suggest this equation:
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The length of a rectangle is twice its width.<br> The perimeter of the rectangle is 126 feet.
seraphim [82]

Answer: Length = 42ft Width = 21ft

Step-by-step explanation:

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Vikentia [17]

Answer:

x ≈ 14.57

Step-by-step explanation:

using the sine ratio in the right triangle

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8 0
2 years ago
The amount A of the radioactive element radium in a sample decays at a rate proportional to the amount of radium present. Given
slavikrds [6]

Answer:

a) \frac{dm}{dt} = -k\cdot m, b) m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }, c) m(t) = 10\cdot e^{-\frac{t}{2438.155} }, d) m(300) \approx 8.842\,g

Step-by-step explanation:

a) Let assume an initial mass m decaying at a constant rate k throughout time, the differential equation is:

\frac{dm}{dt} = -k\cdot m

b) The general solution is found after separating variables and integrating each sides:

m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }

Where \tau is the time constant and k = \frac{1}{\tau}

c) The time constant is:

\tau = \frac{1690\,yr}{\ln 2}

\tau = 2438.155\,yr

The particular solution of the differential equation is:

m(t) = 10\cdot e^{-\frac{t}{2438.155} }

d) The amount of radium after 300 years is:

m(300) \approx 8.842\,g

4 0
3 years ago
Read 2 more answers
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