2 years ago

PLEASE HELP!! Question:use the figure to solve for x

Mathematics

2 answers:

liberstina [14]2 years ago

8 0

The answer to this is D= 45

Norma-Jean [14]2 years ago

6 0

Answer:

d. x=45

Step-by-step explanation:

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galben [10]

Find both roots :
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2 years ago

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A hospital uses cobalt-60 in its radiotherapy treatments for cancer patients. Cobalt-60 has a half-life of 7

NeTakaya

Answer:

We have 197 g of Co-60 after 18 months.

Step-by-step explanation:

We can use the decay equation.

$M_{f}=M_{i}e^{-\lambda t}$

Where:

M(f) and M(i) are the final and initial mass respectively
λ is the decay constant (ln(2)/t(1/2))
t(1/2) is the half-life of Co
t is the time at the final amount of m

$M_{f}=228e^{-\frac{ln(2)}{7} 1.5}$

$M_{f}=197\: g$

<u>Therefore, we have 197 g of Co-60 after 18 months.</u>

I hope it helps you!

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3 years ago