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3 years ago

Please answer this correctly I have to finish this today as soon as possible

Mathematics

2 answers:

dangina [55]3 years ago

7 0

Answer:

Sheng

Step-by-step explanation:

user100 [1]3 years ago

5 0

Answer: Sheng

Step-by-step explanation:

First, you list the fraction of each of them. I then used the butterfly method to figure out whose fraction was smaller

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Which of the following points could be added to the graph f(x)=-|x+3| to keep the graph a function?

sasho [114]

None of the points could be added to the graph f(x)=-|x+3| to keep the graph a function

<h3>How to determine the point?</h3>

The equation of the function is given as:

f(x) = - |x + 3|

The points are given as:

(0, 3) and (-3, -6)

When x = 0, we have:

f(0) = - |0 + 3|

f(0) = -3 --- different y value from (0, 3)

When x = -3, we have:

f(-3) = - |-3 + 3|

f(-3) = 0 --- different y value from (-3, -6)

This means that the x values point to different y values (this does not represent a function)

Hence, none of the points could be added to the graph f(x)=-|x+3| to keep the graph a function

Read more about functions and relations at:

brainly.com/question/2328150

#SPJ1

6 0

2 years ago

A scientist is testing a new antibiotic by applying the antibiotic to a colony of 10,000 bacteria. The number of bacteria decrea

artcher [175]

Answer:

3.3 hours.

Step-by-step explanation:

We have been given that a scientist is testing a new antibiotic by applying the antibiotic to a colony of 10,000 bacteria. The number of bacteria decreases by 75% every two hours.

Since number of bacteria is decreasing exponentially, so we will use exponential decay function.

$y=a*b^x$ , where,

a= Initial value,

b = For decay b is in form (1-r), where r is rate in decimal form.

Let us convert our given rate in decimal form.

$75\%=\frac{75}{100}=0.75$

As number of bacteria is decreasing every 2 hours, so number of bacteria decreased in 1 hour will be x/2.

Upon substituting our given values in above formula we will get,

$y=10,000(1-0.75)^{\frac{x}{2}}$

To find the number of hours it will take to for the bacteria colony to decrease to 1000, we will substitute y = 1,000 in our equation.

$1,000=10,000(0.25)^{\frac{x}{2}}$

Let us divide both sides of our equation by 10,000.

$\frac{1,000}{10,000}=\frac{10,000(0.25)^{\frac{x}{2}}}{10,000}$

$0.1=(0.25)^{\frac{x}{2}}$

Let us take natural log of both sides of our equation.

$ln(0.1)=ln((0.25)^{\frac{x}{2}})$

$ln(0.1)=\frac{x}{2}*ln(0.25)$

$-2.302585=\frac{x}{2}*-1.386294$

$x=\frac{-2.302585}{-1.386294}*2$

$x=1.660964*2$

$x=3.3219\approx 3.3$

Therefore, it will take 3.3 hours for the bacteria colony to decrease to 1000.

8 0

4 years ago

MULTIPLYING W/ VARIABLES <br><br> I need to know what goes in the boxes

MaRussiya [10]

Answer:

Alway set your equations up with x first.

4x + 8 = x

-- x + 2 = x

4. x + 2 - 2 = x. is -2

You will always come up with the opposite of the last number in. × + 2

---- = x -2 so x is -2

-2

Step-by-step explanation:

The reason you do this, is what you do to 1 side you must do to the other side. This leaves you with

× = x-2, so x is -2

5 0

3 years ago

Does anyone know the answer? Thanks

Westkost [7]

The 3rd one looks to be the correct one

8 0

3 years ago

Read 2 more answers

The total cost of five boxes of pasta is $13 there is 12 bucks each box of pasta goes the same amount?

polet [3.4K]

Answer:

Step-by-step explanation:

7 0

3 years ago