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Julli [10]
2 years ago
5

Please answer question 4

Mathematics
1 answer:
olasank [31]2 years ago
3 0
#4)
cross multiply
2(8x+10) = 4 * 5x
16x + 20 = 20x
4x = 20
  x = 5
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Plz help me, thank you
Kruka [31]

Answer:

P=40(1.03526)^{t}

Step-by-step explanation:

<u>Exponential Growth </u>

The natural growth of some magnitudes can be modeled by the equation:

P=P_o(1+r)^{t}

Where P is the actual amount of the magnitude, Po is its initial amount, r is the growth rate and t is the time.

The initial number of bacteria is Po=40 and it doubles (P=2Po) at t=20 min. With that point we can find the value of r:

2P_o=P_o(1+r)^{20}

Simplifying:

(1+r)^{20}=2

Solving for 1+r:

1+r=\sqrt[20]{2}

1+r=1.03526

The exponential function that models the situation is:

\mathbf{P=40(1.03526)^{t}}

4 0
2 years ago
if the original desk costs $650. It has been marked down to a new price of $520. what is the percent off
skad [1K]
The percent off is 20%
6 0
3 years ago
What is the relationship between the diameter and the radius of a cylinder?
Artist 52 [7]
Diameter = 2* the radius of a cylinder

radius is half the diameter of a cylinder

i.e. r = d/2
4 0
3 years ago
Multiply or divide the following expression: Reduce all answers to lowest terms. Factor the following completely.
Semmy [17]

A function assigns the values. The value of f(-3) and f(3) + f(-3) is 8 and -8, respectively.

<h3>What is a Function?</h3>

A function assigns the value of each element of one set to the other specific element of another set.

Given the function f(x)=-x²-4x+5, therefore, the value of f(x) when the value of x is -3 is,

f(-3) = -(-3)² - 4(-3) + 5

f(-3) = -9 + 12 + 5

f(-3) = 8

Now, the value of f(x) when the value of x is 3 is,

f(3) = -(3)²-4(3)+5

f(3) = - 9 - 12 + 5

f(3) = -16

further, the value of f(3) + f(-3) is,

f(3) + f(-3) = -16 + 8

f(3) + f(-3) = -8

Hence, the value of f(-3) and f(3) + f(-3) is 8 and -8, respectively.

Learn more about Function:

brainly.com/question/5245372

#SPJ1

7 0
2 years ago
2.2
Scorpion4ik [409]

Answer:

my pfp

Step-by-step explanation:

the answer to everything is my pfp

4 0
2 years ago
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