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rjkz [21]
3 years ago
11

What is the domain and range of y= x⁴-1?anyone help me quickly please!!!

Mathematics
1 answer:
jasenka [17]3 years ago
6 0
I don’t know if this will help....

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WILL GIVE BRAINLIEST
Evgesh-ka [11]
All you have to do is plug in the given values into the given equation and evaluate.

The expression is,

A(t) =  l{e}^{rt}
But we have to analyze the problem carefully. This is a natural phenomenon that can be modelled by a decay function. The reason is that, after every hour we expect the medicine in the blood to keep reducing.

Therefore we use the decay function rather. This is given by,


A(t) =  l{e}^{-rt}

where,

l = 100 \: milligrams

r =  \frac{14}{100}  = 0.14

and

t = 10 \: hours

On substitution, we obtain;

A(10) =  100 \times {e}^{ - 0.14 \times 10}


A(10) =  100 \times {e}^{ - 1.4}



Now, we take our calculators and look for the constant
e

,then type e raised to exponent of -1.4. If you are using a scientific or programmable calculator you will find this constant as a secondary function. Remember it is the base of the Natural logarithm.



If everything goes well, you should obtain;

A(10) =  100 \times 0.24659639


This implies that,


A(10) =  24.66

Therefore after 10 hours 24.66 mg of the medicine will still remain in the system.
3 0
3 years ago
Kevin spent 10 hours doing homework last week. This week he spent 15 hours doing homework. He says that he spent 150% more time
agasfer [191]
No he is wrong because 75% more time would be spent doing homework
6 0
3 years ago
Write 4.14 in a fractional notation ?
tatiyna
If it's in a fraction you want it it's 207/50 irregular
And 4 7/50 as a mixed fraction
3 0
3 years ago
Answer pls 10pts.........................
AlladinOne [14]

Answer:

7x + 4 = 5x + 16 \\ 7x - 2x = 16 - 4 \\ 5x = 12 \\ x = 2.4

\\ y + 6  + (7x + 4) = 180 \\ y + 6 + 7 \times 2.4 + 4 = 180 \\  \\ y + 17 + 16.8 = 180 \\ y + 33.8 = 180 \\ y = 180 - 33.8 \\ y = 146.2

5 0
2 years ago
Read 2 more answers
Based on the bar graph shown below, the 25th percentile is located in which interval?
STatiana [176]
0-5 because 25th percentile can also be known as the 1st quartile or the first 25% of it. so since the medium is 8 then it would be the first interval or 0-5.

if i am wrong please let me know.
4 0
3 years ago
Read 2 more answers
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