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zhannawk [14.2K]
2 years ago
11

A + b + c = 4 a^2 + b^2 + c^2 = 10 a^3 + b^3 + c^3 = 22 a^4 + b^4 + c^4 = ?

Mathematics
1 answer:
77julia77 [94]2 years ago
7 0

Answer:

the answer is 40, turn it into a number pattern and from there you can work out the answer to be 40

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A radioactive substance decays at a rate of 25% every 10 years. Which equation represents the amount of the substance (S) remain
Lelechka [254]

Answer:

y = 100 * (0.75)^{30

Step-by-step explanation:

Given

a =100 --- Initial Amount

r= 25\% every 10 years

Required

The remaining amount after 300 years

To do this, we make use of:

y = a(1 - r)^T

Where

r = decay rate

T = the period of decay

In 300 years, there are 30 periods of 10 years.

i.e.

T = \frac{300}{10}

T = 30

y = a(1 - r)^T

y = 100 * (1 - 25\%)^{30

y = 100 * (1 - 0.25)^{30

y = 100 * (0.75)^{30

3 0
3 years ago
Convert from radians to degrees
Natali [406]

Answer:

The answer is

<h2>135°</h2>

Step-by-step explanation:

In order to convert a value from radians to degrees we multiply the value by \frac{180}{\pi}

So from the question the value to be converted into degrees is

<h3>\frac{3}{4} \pi</h3>

<u>Converting into degrees we have</u>

<h3>\frac{3\pi}{4}  \times  \frac{180}{\pi}</h3>

<u>Reduce the expression with π</u>

That's

<h3>\frac{3 \times 180}{ 4}  =  \frac{540}{4}</h3>

We have the final answer as

<h3>135°</h3>

Hope this helps you

5 0
3 years ago
Science is Hayley's favorite class! She especially loves doing experiments. Today, she began
raketka [301]

Answer: the final mass of the solid is 176 grams.

Step-by-step explanation:

The "change" between two quantities, one initial Qi and one final Qf is defined as:

Change = Qf - Qi.

In this case, the quantity is mass, and we know that the initial mass is 260 grams.

And we also know that the change is -84 grams.

Then we have the equation:

Qf - 260 g = -84g

Qf = -84g + 260g = 176g

So the final mass of the solid is 176 grams.

8 0
2 years ago
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dem82 [27]
0.75 of a mile Amy ran
6 0
3 years ago
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mihalych1998 [28]
I hope this helps c:

5 0
3 years ago
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