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MissTica
3 years ago
5

HELP PLEASE HELP ITS THE LAST QUESTION

Mathematics
1 answer:
andrew-mc [135]3 years ago
7 0
C and d hope it help
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Does anybody know how to do time with exponential decay
My name is Ann [436]
<span>From the message you sent me:

when you breathe normally, about 12 % of the air of your lungs is replaced with each breath. how much of the original 500 ml remains after 50 breaths

If you think of number of breaths that you take as a time measurement, you can model the amount of air from the first breath you take left in your lungs with the recursive function

b_n=0.12\times b_{n-1}

Why does this work? Initially, you start with 500 mL of air that you breathe in, so b_1=500\text{ mL}. After the second breath, you have 12% of the original air left in your lungs, or b_2=0.12\timesb_1=0.12\times500=60\text{ mL}. After the third breath, you have b_3=0.12\timesb_2=0.12\times60=7.2\text{ mL}, and so on.

You can find the amount of original air left in your lungs after n breaths by solving for b_n explicitly. This isn't too hard:

b_n=0.12b_{n-1}=0.12(0.12b_{n-2})=0.12^2b_{n-2}=0.12(0.12b_{n-3})=0.12^3b_{n-3}=\cdots

and so on. The pattern is such that you arrive at

b_n=0.12^{n-1}b_1

and so the amount of air remaining after 50 breaths is

b_{50}=0.12^{50-1}b_1=0.12^{49}\times500\approx3.7918\times10^{-43}

which is a very small number close to zero.</span>
5 0
3 years ago
Find the area of the rhombus in m squared
Nataly [62]

Answer:

\boxed{\bold{100 \ m^2}}

Step By Step Explanation:

Area Of Rhombus: \bold{\frac{pq}{2} }

Identify 'p'

5 + 5 = 10

p = 10

Identify 'q'

10 + 10 = 20

q = 20

\bold{10 \ \cdot\ \ 20 \ = \ 200}

\bold{200 \ \div \ 2 \ = \ 100}

➤ \boxed{\bold{Mordancy}}

4 0
3 years ago
Simplify (5x^3+7x-8)+(2x^3-5x^2-x+3)​
Anna [14]

Answer:

Step-by-step explanation:

8 0
3 years ago
Which equation accurately represents this statement? Select three options. Negative 3 less than 4.9 times a number, x, is the sa
Svetllana [295]

Equations b,c, and e accurately represent this statement.

<h3>What is the equation?</h3>

A mathematical statement consisting of an equal symbol between two algebraic expressions with the same value is known as an equation.

The three equation accurately represents this statement is;

4.9 x-(-3) = 12.8

3+ 4.9 x = 12.8

12.8 = 4.9 x +3

Hence, equations b,c, and e accurately represent this statement.

To learn more, about equations, refer;

brainly.com/question/10413253

#SPJ1

6 0
2 years ago
A rectangle has an area of 72 square feet and a lengh 8 times greater than its width. what is the perimeter of the rectangle​
Artyom0805 [142]

Answer:

Step-by-step explanation:

width = x  ft

Length = 8x

Area of rectangle = 72 sq.feet

length * width = 72

8x * x = 72

8x² = 72

x² = 72/8

x² = 9 = 3²

x = 3

Width = x = 3 feet

Length = 8x = 8*3 = 24 feet

Perimeter = 2*(length + width)

               = 2*(24 + 3) = 2*27 = 54 feet

6 0
3 years ago
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