3 years ago

Evaluate expression of 2ac

Mathematics

1 answer:

miss Akunina [59]3 years ago

4 0

We would do 2*a=4*c=6

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6 out of the 60 employees at the sports shop are part-time employees. What percentage of the employees at the sports shop work p

Serhud [2]

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3 years ago

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exis [7]

Answer:

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3 years ago

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

I hope it helps you!

4 0

3 years ago

Prove that the value of the expression: 731^2−631^2 is divisible by 100

Ivanshal [37]

Answer:

Step-by-step explanation:

731² - 631² is the difference of squares.

731² - 631² = (731+631)(731-631) = 1362×100

therefore, 731² - 631² is divisible by 100

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3 years ago

Can someone please help me with number 19

kipiarov [429]

The expression of the problem is, 8x.
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