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mash [69]
3 years ago
5

Which situation is an example of exponential decay?

Mathematics
1 answer:
marshall27 [118]3 years ago
4 0

Answer:

Half Life

Step-by-step explanation:

Cells decay by half of how much they decayed last time. This is an example of  exponential decay.

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You are designing a rectangular swimming pool that is to be sent into the ground. The width of the pool is 5 feet more than the
Vikentia [17]

Answer:  depth = 5 ft

width =  10 ft

length =  40 ft

Step-by-step explanation:

d =  depth

width = d + 5

length = d + 36

Volume = length x width x depth = 2000 cf

d(d+35)(d+5) = 2000

d(d^{2} + 40d + 175) = 2000

d^3 + 40d^2 + 175d = 2000

rewrite in standard cubic polynomial form : ax3 + bx2 + cx + d = 0

d^3 + 40(d^2) + 175d - 2000 = 0

Find the roots of the cubic polynomial:

factors of 2000 are 1, 5, 10 15, 20, etc.

Try the factor 5 first by plugging it in the equation:

5^3 + 40(5^2) + 175(5) - 2000 = 0  

Lucky break!  No need to find the other roots because they will be negative, and you can't have a negative value for a pool depth.

So, depth = 5 ft

width = 5 + 5 = 10 ft

length = 5 + 35 = 40 ft

6 0
1 year ago
Help for brainliest plz
posledela

Answer:

1. Irrational

2. Rational

3. Rational

4. Irrational

5. Irrational

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Complete the steps to solve for x.
hram777 [196]

Answer:

-0.49x+0.19x=6.6

-0.3x=6.6

x=-22

5 0
2 years ago
A cone shaped building has a height of 11.4 meters and a base with a diameter of 12 meters . The building will be filled with ro
Vlad1618 [11]

Answer:

The answer to your question is  $ 8591.04

Step-by-step explanation:

Data

height = 11.4 m

diameter = 12 m

cost = $20/ft³

Process

1.- Calculate the volume of the cone

Formula

Volume = 1/3 πr²h

Substitution

Volume = 1/3 (3.14)(12/2)²(11.4)

Simplification

Volume = 1/3(1288.66)

Volume = 429.55 m³

2.- Calculate the cost

                $20 ----------------- 1 m³

                   x   ----------------- 429.55 m³

                   x = (429.55 x 20)/ 1

                   x = $ 8591.04

8 0
3 years ago
Will give brainliest
posledela

Answer:

I think its the lifo method im not sure but i had a question like this in class

5 0
1 year ago
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