3 years ago

Does m" = m.n? True or False

Mathematics

1 answer:

Otrada [13]3 years ago

3 0

I think False sorry if wrong

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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

4 years ago

Find the perimeter and area of the polygon shown below.

Mars2501 [29]

Answer:

A. P = 72 feet, A = 300 square feet

Step-by-step explanation:

✔️Perimeter = sum of all sides of the polygon = 15 + 16 + 17 + 8 + 16 = 72 ft

✔️Area of the polygon = area of a trapezoid = ½(a + b)h

Where,

a = 16 ft

b = 16 + 8 = 24 ft

h = 15 ft

Substitute

Area = ½(16 + 24)15

Area = ½(40)15

Area = 300 ft²

4 0

3 years ago

Question 1 of 10<br>Which of the following functions is graphed below?

Sedaia [141]

Attach picture, where is below

3 0

3 years ago

48 c equal how many qt ?

julsineya [31]

12 because a quart equal 4 cups so 48 divided by 12 equals 4.

5 0

4 years ago

The diagram below shows the construction of the center of the circle circumscribed about .∆ABC.

Igoryamba

the medians to the sides of triangle ABC

4 0

3 years ago