3 years ago

Write an algebraic expression half the quantity of X plus Y?

Mathematics

1 answer:

damaskus [11]3 years ago

5 0

It could be: X • 1/2 + Y
Or: X/2 + Y

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Round 97.081 to the nearest 10th

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Answer:97.1

Step-by-step explanation:

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A scientist has 100 milligrams of a radioactive element. The amount of radioactive element remaining after t days can be determi

grandymaker [24]

The mass of the first shipment at time t is
$m_{1}=100( \frac{1}{2} )^{ \frac{t}{10}}$

The mass of the second shipment at time t is
$m_{2}=100( \frac{1}{2} )^{ \frac{t-3}{10} }$

At time t, the ratio of m₁ to m₂ is
$\frac{m_{1}}{m_{2}} = \frac{100}{100}. \frac{(1/2)^{t/10}}{(1/2)^{(t-3)/10}} \\ = \frac{(1/2)^{t/10}}{(1/2)^{t/10}}. \frac{1}{(1/2)^{-3/10}} \\ = (1/2)^{3/10} \\ = 0.8123$

Therefore as a percentage,
$\frac{m_{1}}{m_{2}} =100*0.8123 = 81.23 \%$

Answer: B. 81.2%

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4 years ago

The number of dogs compared to the number of cats owned by the residents of an apartment complex is represented by the model bel

vesna_86 [32]

Answer:

Where is the model ?

Step-by-step explanation:

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3 years ago

Your school district cancels schools when more than 2.5 inches of snow accumulate on the ground each hour. Snow is currently acc

kari74 [83]

Answer:

Extra snow needed > 0. 3 inch

Step-by-step explanation:

Given that:

Cancelation occurs when > 2.5 inch of snow accumulates each hour

Accumulation rate = 11/5 inch per hour

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Answer:

see explanation

Step-by-step explanation:

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F + V = E + 2

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2 years ago