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1 year ago

What times what equals 168 besides 84 times 2?

Mathematics

1 answer:

Art [367]1 year ago

8 0

Answer:

12 & 14

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%

4 0

2 years ago

13/15 - 1/4 = Please help me

podryga [215]

13/15-1/4

=52/60-15/60

=52-15

______

=37/60

hope it helps..uu frnd

5 0

2 years ago

Read 2 more answers

20% of the basketball team is injured if there is a total of 15 players on the team how many have been injured

pav-90 [236]

Answer:

3 players

Step-by-step explanation:

15 times 20% = 3.

You can check yourself if you'd like.

HOPE THIS HELPS :)

5 0

2 years ago

Isolate the x 3x+3y=-3

kirza4 [7]

Answer:

Step-by-step explanation:

3x + 3y = -3 given

3x = -3y - 3 subtract 3y from both sides

x = -y -1 divide everything by 3

hope this helps <3

3 0

2 years ago

I need help someone can help me

xenn [34]

Answer:

you never showed the number line sir

Step-by-step explanation:

6 0

2 years ago