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Lemur [1.5K]
3 years ago
9

I need help on this I'm super confused.

Mathematics
1 answer:
Ksivusya [100]3 years ago
7 0

Answer:

a) 7x-2

b) 28x-8

c) length of a side: 26 in, perimeter: 104 in, area: 676 square inches

i’m not quite sure abt c but i hope this helps :)

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A certain radioactive material decays in such a way that the mass in kilograms remaining after t years is given by the function
Angelina_Jolie [31]

The mass of radioactive material remaining after 50 years would be 48.79 kilograms

<h3>How to determine the amount</h3>

It is important to note that half - life is the time it takes for the amount of a substance to reduce by half its original size.

Given the radioactive decay formula as

m(t)=120e−0.018t

Where

t= 50 years

m(t) is the remaining amount

Substitute the value of t

m(t) = 120e^-^0^.^0^1^8^(^5^0^)

m(t) = 120e^-^0^.^9

Find the exponential value

m(t) = 48.788399

m(t) = 48.79 kilograms to 2 decimal places

Thus, the mass of radioactive material remaining after 50 years would be 48.79 kilograms

Learn more about half-life here:

brainly.com/question/26148784

#SPJ1

7 0
2 years ago
What is the slope of the line with the points (3,5) and (6,4)
Bumek [7]

Answer:

The slope is -1/3

Step-by-step explanation:

(y2-y1)/(x2-x1)

(4-5)/(6-3)

-1/3

8 0
3 years ago
What number is greater 17 or 20/5
gtnhenbr [62]
Hey there!

17 is greater than 20/5 because 20 divided by 5=4
7 0
3 years ago
Read 2 more answers
What f(5) if f(x) = -2x +1
Effectus [21]
F(5) is like X is 5
you just do this 
f(5)=-2x+1
     =-2(5)+1
     =-10+1
     = -9

:D
5 0
3 years ago
Hello i need help on this pls <br>​
zvonat [6]
I think it says thirteen divided by thirteen and it will equal thirteen with a remainder of two hope this helps you out
8 0
3 years ago
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