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Setler [38]
3 years ago
5

Help please I need the answers

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
6 0

Answer:

.8

Step-by-step explanation:

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When x=12 y=8. find y when x=42
Ahat [919]

Answer:

\frac{12}{8}  =  \frac{42}{y}  \\ y =  \frac{42 \times 8}{12}  \\ \boxed{ y = 28}

<h3>28 is the right answer.</h3>
4 0
3 years ago
The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass
krok68 [10]
So, 0.5^5 is 0.03125
multiply that by 125 and get your answer.
*3.90625* (4)
just saying, I got the 0.5^5 thing because 5 is the number of half-lives (x) and 0.5 is the rate of loss (or whatever its called).
If it were to gain, you would put 1.5

7 0
3 years ago
Write a formula for the area A of a parallelogram.
OleMash [197]
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5 0
3 years ago
Solve: x=4+(4x-4)1/2 x = 2
Andreyy89

Answer:

No real solution- Not any of the options anyway

Step-by-step explanation:

So I replaced the x's with the two possible equations and then tried to solve...

2=4+(4x2-4)1/2

2=4+(8-4)1/2

2=4+(4)1/2

2=8(1/2)

2=4   Which is not true

10=4+(4x10-4)1/2

10=4+(40-4)1/2

10=4+36(1/2)

10=40(1/2)

10=20 Which is also not true

Therefore, there is no real solution

6 0
3 years ago
When you answer this please show your work I
Mamont248 [21]

Answer:

wait the whole thing or just one question? if one question please tell me which one! thanks!

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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