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3 years ago

A radioactive substance has a decay rate of 2.3% per year. What is its half life? Give your answer correct to 2 decimal places.

Mathematics

1 answer:

tatiyna3 years ago

8 0

Please send a message me a picture of the problem and I think it is .023

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Need help please thank you if you help

Alexus [3.1K]

Answer:

$1) 3\f\frac{2}{3}=2\\2) x\frac{x}{18} =18\\3)12\frac{12}{y}=y \\4)x\frac{x}{6} =6$

7 0

2 years ago

What is the distance between the points (18, 39) and (3, 39) in the xy-plane?

nydimaria [60]

Answer:

C. 15 units,

Step-by-step explanation:

The y coordinates are both 39 so the line joining the 2 points is a horizontal line.

Distance = 18-3 = 15.

8 0

2 years ago

g My Notes Water flows from the bottom of a storage tank at a rate of r(t) = 200 − 4t liters per minute, where 0 ≤ t ≤ 50. Find

Arada [10]

Answer:

4,200 liters

Step-by-step explanation:

The flow rate is given by:

$r(t) = 200 - 4t$

Integrating the flow rate expression from t=0 to t=30 minutes, yields the total volume that flows out of the tank during that period:

$\int\limits^{30}_0 {r(t)} = \int\limits^{30}_0 {(200 - 4t} )\, dt \\V=(200t - 2t^2)|_0^{30}\\V= (200*30 -2*30^2)-(200*0 -2*0^2)\\V=4,200\ liters$

4,200 liters of water flow from the tank during the first 30 minutes.

3 0

3 years ago

URGENT HOMEWORK HELP!!

DedPeter [7]

Answer:

Step-by-step explanation:

The common difference is simply the constant we add/subtract each time. In this case, the common difference is 3/2 as can be seen from the recursive formula. In other words, each new $n$ will be 3/2 larger than the previous.

The answer is A.

7 0

2 years ago

_____ cups rice is equivalent to 1 pound

Tanya [424]

Answer:

2.5 cups is equal to 1 pound.

Step-by-step explanation:

___2.5__ cups rice is equivalent to 1 pound

Hope This Helped

7 0

1 year ago

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