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3 years ago

What is the scientific notation for this number: .0765 show how you got yoru answer

Mathematics

2 answers:

Daniel [21]3 years ago

5 0

Hey there!!

Scientific notation for 0.0765 is

... 7.65 × 10^-2

Hope my answer helps!!

Alex73 [517]3 years ago

5 0

To not confuse yourself put zero in front of decimal... YOU DO NOT HAVE TO DO THIS

0.0765 You move decimal to the right 2 times

7.65 (You always stop moving decimal when you have a number other than 0 on the left)

Then you add x 10 to the number of spaces you moved

7.65 x 10^2 (2 represents the # of spaces you moved)

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If f(x)=5x^3 and g(x)=x+1, find (f•g)(x)

alukav5142 [94]

Hello from MrBillDoesMath!

Answer:

5 x^3 + 15 x^2 + 15 x + 5 , none of the provided choices

Discussion:

f(x) = 5 x^3

g(x) = x+ 1

(f•g)(x) =

f(g(x)) =

f(x+1) =

5 * (x+1)^3 =

5 x^3 + 15 x^2 + 15 x + 5

which is none of the provided answers.

Thank you,

MrB

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3 years ago

Write a division problem that has a quotient of 1/20

alexdok [17]

Answer:

5 divided by 100

Step-by-step explanation

5 divided by 100 is 0.05 but as a fraction, it's 1/20

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3 years ago

What fraction is at the same location as 1/4

Maksim231197 [3]

Answer:

Fractions equivalent to 1/4 are 2/8, 3/12, 4/16, 5/20, 6/24, 7/28, 8/32, 9/36, 10/40.

those are the ones i know so far

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3 years ago

[3] Find the Social Security tax of 6.2% on $36,511.98

puteri [66]

Answer:

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Step-by-step explanation:

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3 years ago

A fossilized leaf contains 18% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as

Sati [7]

Answer: The age of the fossilized leaf is 13829 years.

Step-by-step explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant = 100

a - x = amount left after decay process = $\frac{18}{100}\times 100=18$

a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$k=\frac{0.693}{5600years}=0.00012years^{-1}$

b) for finding the age

$t=\frac{2.303}{0.00012}\log\frac{100}{18}$

$t=13829years$

The age of the fossilized leaf is 13829 years.

7 0

3 years ago