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denis23 [38]
3 years ago
7

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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What are scale drawings? can you give an example?
Alecsey [184]
Scale Drawings are drawings that are used to show the true size of something.
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Hope this helps :) 
7 0
3 years ago
Solve for x please show work... i will give you brainliest
Ksenya-84 [330]

Answer:

82°

Step-by-step explanation:

total wine of quadrilateral=360°

130+ 46+ 102 +x =360

x=360- 278

x=82°

5 0
2 years ago
What is 14 feet in inches
erastova [34]

168 inches.

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8 0
3 years ago
Let ∠Q be an acute angle such that tanQ=0.04. Use a calculator to approximate the measure of ∠Q to the nearest tenth of a degree
Digiron [165]

We have been given that ∠Q is an acute angle such that \text{tan}(Q)=0.04. We are asked to find the measure of angle Q to nearest tenth of a degree.

We will use arctan to solve for measure of angle Q as:

Q=\text{tan}^{-1}(0.04)

Now we will use calculator to solve for Q as:

Q=2.290610042639^{\circ}

Upon rounding to nearest tenth of degree, we will get:

Q=2.3^{\circ}

Therefore, measure of angle Q is approximately 2.3 degrees.

7 0
2 years ago
If 25% more than a number is 325 what is 20% less than the number
Verdich [7]
Let the number be x.  Then 1.25x = 325, or x = 260.  

20% less than 260 is 0.80(260) = 208
7 0
3 years ago
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