3 years ago

What is 3 1/2 divided by 1/6

Mathematics

1 answer:

sladkih [1.3K]3 years ago

5 0

The best answer would be: 2x3+1=7/2 x 6/1=42/2,= 21 the answer would be 21

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Jamie had seven posters, but only three could fit on his closet door. How many different ways can he arrange the three posters o

Ahat [919]

Answer:

tieneesqe leer ubeni

Step-by-step explanation:

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3 years ago

Classify each number as rational or irrational.

tatuchka [14]

Answer:

π - irrational

0.04053.. - irrational

0.76 - rational

3.565565565 - irrational

-17 - rational

3.275 - rational

Step-by-step explanation:

rational = can express as fraction

irrational = cannot

3 0

3 years ago

A fossil was analyzed and determined to have a carbon-14 level that is 80 % that of living organisms. the half-life of c-14 is 5

liq [111]

Answer:

The fossil is 1860 years old.

Step-by-step explanation:

The equation for the amount of fossil has the following format:

$Q(t) = Q(0)e^{rt}$

In which Q(t) is the amount after t years, Q(0) is the initial amount and r is the rate of change.

Half-life of c-14 is 5730 years.

This means that $Q(5730) = 0.5Q(0)$

$Q(t) = Q(0)e^{rt}$

$0.5Q(0) = Q(0)e^{5730r}$

$e^{5730r} = 0.5$

$\ln{e^{5730r}} = \ln{0.5}$

$5730r = \ln{0.5}$

$r = \frac{\ln{0.5}}{5730}$

$r = -0.00012$

$Q(t) = Q(0)e^{-0.00012t}$

How old is the fossil?

This is t for which

$Q(t) = 0.8Q(0)$

$Q(t) = Q(0)e^{-0.00012t}$

$0.8Q(0) = Q(0)e^{-0.00012t}$

$e^{-0.00012t} = 0.8$

$\ln{e^{-0.00012t}} = \ln{0.8}$

$-0.00012t = \ln{0.8}$

$t = -\frac{\ln{0.8}}{-0.00012}$

$t = 1860$

The fossil is 1860 years old.

4 0

3 years ago

Evaluate the expression

Neporo4naja [7]

Simplify the expression.

Exact form:

$\frac{476}{25}$

Decimal form:

19.04

Mixed Number Form:

$19\frac{1}{25}$

8 0

3 years ago

micheal brought 12 used books at th book sale. he paid $42.60 for the books. if each book cost the same price, how much did one

nordsb [41]

Answer:

Each book cost $3.55

Step-by-step explanation:

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3 years ago