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Lady_Fox [76]
3 years ago
13

The half-life of Po-210 is 140 days. If the initial mass of the sample is 5

Mathematics
1 answer:
Nata [24]3 years ago
8 0

Answer:

<h2>0.625kg</h2>

Step-by-step explanation:

an equation can be made given by the detials of the problem

f(n)=5(0.5)^(x/140)

where x is the amount of days

plug in 420 for x to get

0.625

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You buy a veido game for $60 and the sales tax is 8% what is the total cost for the game including the sales tax
Keith_Richards [23]
8% of 60 = 4.8
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5 0
3 years ago
Q1. Prasha has five blocks of wood. The total weight of all five blocks of wood is 3 kilograms. 4 of the blocks of wood each hav
harina [27]

Answer: Weight of the remaining block of wood =400g

Step-by-step explanation:

Total Weight of five(5) blocks = 3kg = 3000g

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Weight of the remaining block of wood =Total Weight of five(5) blocks-Weight of 4 out of the 5 blocks

= 3000g-2600g

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7 0
3 years ago
A polynomial equation with rational coefficients has the roots -8 and 2-i. Find two additional roots
shutvik [7]

Answer:

Step-by-step explanation:

If the polynomial is a cubic (third-degree), then it is

f(x) = x³+4x²-27x+40

and the other root is 2+i.

However, if we need two additional roots, it implies that the polynomial is a quartic (fourth degree).  In that case, we need additional information.  Reread the original question and  update post if necessary.

8 0
3 years ago
What is 3,562.653 in expanded form
Nezavi [6.7K]

Answer:

3000+500+60+2+.6+.05+.003

4 0
4 years ago
Rodney had 7 toffees MORE than Micah. Micah’s father then gave him 2 more toffees. How many toffees more than Micah would Rodney
WARRIOR [948]

Answer:

Rodney will have 9 toffees more than Micah.

Step-by-step explanation:

Let the numbr of toffee Micah have = x

So, the number of toffee Rodney have = x + 7.

Since, Micah's father gave him 2 more toffees.

Then, number of toffee Micah now have = x + 2

<em>So, number of toffees Rodney will have = (x+7) + 2 = x + 9.</em>

Hence, Rodney will have 9 toffees more than Micah.

5 0
3 years ago
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