Answer:
2.09.ft/min
Step-by-step explanation:
There is a formula for the linear velocity using rpm:
V = (2π)/60 * r * rpm
V = (2π)/60 * 2ft * 10 = 2.09ft/min
The amount of radioactive material that would remain by the 7th hour of decay is 0.12 grams.
<h3>
Exponential function</h3>
An exponential function is in the form:
y = abˣ
where y,x are variables, a is the initial value and b is the multiplicative factor.
Let y represent the amount of substance remaining after x hours. Hence:
a = 9375, at x = 4, y = 15:
15 = 9375(b)⁴
b = 0.2
y = 9375(0.2)ˣ
For the 7th hour, x = 7:
y = 9375(0.2)⁷ = 0.12
The amount of radioactive material that would remain by the 7th hour of decay is 0.12 grams.
Find out more on Exponential function at: brainly.com/question/12940982
A 1:4
Find a common factor. In this case it’s 15
15/15=1 60/15=4
Therefore the answer Is 1:4
Answer:
1.135 or 17.5%
Step-by-step explanation:
√58 ≈ 7.616
√42 ≈ 6.481
7.616 -6.481 = 1.135
√58 is about 1.135 greater than √42. This is about 1.135/6.481 = 17.5% of the value of √42.
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√58 is about 1.135, or 17.5%, greater than √42.
