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3 years ago

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A scientists writes the equation N(h)= 100e^0.25h to model the growth of a certain bacteria in a petri dish, where N represent t

he number of bacteria after h hours. After approximately how many hours will 450 bacteria be present?
1 hour
6 hours
13 hours
15 hours

1 answer:

balandron [24]3 years ago

8 0

The answer is 6 hours

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-3x + 7y = -16<br> -9x + 5y = 16

otez555 [7]

Answer:

x = -4 y =-4

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

7 0

3 years ago

HELP ME ASAP........

butalik [34]

The sample at option B, {0, 2} is not a part of the sample space of a spinner when spun two times.

<h3>What is a sample space?</h3>

The set consists of all the possible outcomes of an event called sample points, which is said to be a sample space.

<h3>Calculation:</h3>

It is given that,

a spinner has 5 sections of equal area and each section is numbered from 1 to 5.

If the spinner is spun two times, then the possible outcomes are 25. They are:

{(1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (5, 1), (5, 2), (5, 3), (5, 4), (5, 5)}

So, from the given options, the sample {0, 2} is not possible since there is no such a section on the spinner named 0.

Learn more about sample space here:

brainly.com/question/9773761

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2 years ago

A cubic container has a height of 3 meters. what is the surface area of the cube

BartSMP [9]

A. is the correct answer

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3 years ago

Find the pattern and use it to list the nth term in the sequence.<br> 3, 9, 27, 81, 243 ...

KonstantinChe [14]

The pattern is formed a geometric sequence

The nth term of the sequence is $a_{n}=3^{n}$

Step-by-step explanation:

The formula of the nth term of a geometric sequence is:

$a_{n}=ar^{n-1}$ , where

a is the first term
r is the common ratio between the consecutive terms

∵ The pattern is 3 , 9 , 27 , 81 , 243

∵ 9 ÷ 3 = 3

∵ 27 ÷ 9 = 3

∵ 81 ÷ 27 = 3

∵ 243 ÷ 81 = 3

- There is a common ratio 3 between each two consecutive terms

∴ The pattern is formed a geometric sequence

∵ The first term is 3

∴ a = 3

∵ The common ratio is 3

∴ r = 3

- To find the nth term substitute a and r in the formula above

∵ $a_{n}=ar^{n-1}$

∴ $a_{n}=3(3)^{n-1}$

- Remember we add the powers of the same base with multiplication

∵ 3 × $3^{n-1}$ = $3^{1+n-1}$

∴ 3 × $3^{n-1}$ = $3^{n}$

∴ $a_{n}=3^{n}$

∴ The nth term of the sequence is $a_{n}=3^{n}$

Learn more:

You can learn more about the sequences in brainly.com/question/1522572

#LearnwithBrainly

3 0

3 years ago

Compare and contrast prisms and pyramids

iogann1982 [59]

Answer:

A prism has 5 sides, pyramids have 4 sides, the shapes of the sides of a pyramid are squares and triangles, the sides of a prism are rectangles and triangles, both are 3D

I hope this helps u pls give a brainliest and a thx ;)

3 0

3 years ago