Step-by-step explanation: A quotient is the answer you get after dividing one number by another, and compatible numbers are numbers that are close to the numbers in question yet can divide one another easily.

5 0

3 years ago

If 2x-y equals 120, what are the values of x and y?

krek1111 [17]

X=60 and y=20
x and y can be many things that answers the question to 120

5 0

4 years ago

Read 2 more answers

How do you find out if something is as likely as not?

Arisa [49]

Well if the definition is <span>very probably then it should be easy.</span>

6 0

3 years ago

The isotope known as carbon-14 is radioactive and will decay into the stable form nitrogen-14. As long as an organism is alive,

yan [13]

Answer:

The number of half lives in 14000 years is 2.4258.

Step-by-step explanation:

Initial amount of carbon-14 = $N_o$

Final amount of carbon-14= N

Half life of carbon-14 = $t_{1/2}=5770 year$

Decay constant = k = $\frac{0.693}{t_{1/2}}=\frac{0.693}{5770 year}$

Age of the sample = t = 14,000 years

$N=N_o\times e^{-kt}$

$N=N_o\times e^{-\frac{0.693}{5770 year}\times 14,000 yeras}$

$N=N_o\times 0.1861$

Formula used for number of half lives

$N=\frac{N_o}{2^n}$

where,

N= amount of reactant left after n-half lives

$N_o$ = Initial amount of the reactant

n = number of half lives

$N_o\times 0.1861=\frac{N_o}{2^n}$

$2^n=\frac{1}{0.1861}$

$2^n=5.3734$

Taking log both sides

$n\log 2=\log (5.3734)$

n = 2.4258

The number of half lives in 14000 years is 2.4258.

7 0

3 years ago