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4 years ago

What is the domain and range of the function f(x)= √x

Mathematics

1 answer:

sergij07 [2.7K]4 years ago

3 0

Answer:

x is x≥0 x ≥ 0

Step-by-step explanation:

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a dental company has rolls of floss that are 1872 in long they want to put the distance in yards on their labels what is the dis

Aleonysh [2.5K]

The answer is 52 yards

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3 years ago

The core melt- down and explosions at the nuclear reactor in Chernobyl in 1986 released large amounts of strontium-90, which dec

elena-14-01-66 [18.8K]

If $S(t)$ is the amount of strontium-90 present in the area in year $t$ , and it decays at a rate of 2.5% per year, then

$S(t+1)=(1-0.025)S(t)=0.975S(t)$

Let $S(0)=s$ be the starting amount immediately after the nuclear reactor explodes. Then

$S(t+1)=0.975S(t)=0.975^2S(t-1)=0.975^3S(t-2)=\cdots=0.975^{t+1}S(0)$

or simply

$S(t)=0.975^ts$

So that after 50 years, the amount of strontium-90 that remains is approximately

$S(50)=0.975^{50}s\approx0.282s$

or about 28% of the original amount.

We can confirm this another way; recall the exponential decay formula,

$S(t)=se^{kt}$

where $t$ is measured in years. We're told that 2.5% of the starting amount $s$ decays after 1 year, so that

$0.975s=se^k\implies k=\ln0.975$

Then after 50 years, we have

$S(50)=se^{50k}\approx0.282s$

5 0

3 years ago

Zara is shopping at a furniture store with a budget of $1,500

Burka [1]

The Estimated total cost was $1564. Zara do not have eough money to buy the sofa and coffee table.

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

An equation is an expression that shows the relationship between two or more numbers and variables.

She wants to buy a sofa for $924 and a coffee table for $640, hence:

Estimated total cost = 924 + 640 = $1564

The Estimated total cost was $1564. Zara do not have eough money to buy the sofa and coffee table.

Find out more on equation at: brainly.com/question/1214333

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2 years ago

|x+8| =−3<br> plz help!! show steps and stuuf

Mashcka [7]

Answer:

No solution

Step-by-step explanation:

since it equals a negative 3 in the original equation it cannot be solved

7 0

3 years ago

Read 2 more answers

How do I do this ? I need help

Amiraneli [1.4K]

Answer: 40

Step-by-step explanation:

You first start by multiplying 15 times 16 to see how many ounces you have.

15 x 16 = 240

Then you divide it by 6

240/6 is 40

So you can make 40 burgers

8 0

3 years ago