All categories

3 years ago

Simplify- 28 x5 y-3 z w

Mathematics

1 answer:

navik [9.2K]3 years ago

3 0

Answer:

this should explain your answer.

You might be interested in

The design team in charge of the warehouse has chosen a tile that has an area of 2.25 square feet. Which of the following situat

zysi [14]

My best guess would be D.) None of the above. There is not enough info.

3 0

3 years ago

Read 2 more answers

What is the domain of the function represented by the graph?

ioda

Answer:

Step-by-step explanation:

because mathematically 0 less than or equal to x less than or equal to 4 means starting from 0 up to 4 is the domain of the graph

but if we were asked about the range it was going to be all real number (B) because if the range means the value of y then y have solution in all the way down

please mark me brainliest

thanks for asking

8 0

1 year ago

he radioactive element carbon-14 has a half-life of 5750 years. A scientist determined that the bones from a mastodon had lost

elena-s [515]

Answer:

The bones were 12,485 years old at the time they were discovered.

Step-by-step explanation:

Amount of the element:

The amount of the element after t years is given by the following equation, considering the decay rate proportional to the amount present:

$A(t) = A(0)e^{-kt}$

In which A(0) is the initial amount and k is the decay rate, as a decimal.

The radioactive element carbon-14 has a half-life of 5750 years.

This means that $A(5750) = 0.5A(0)$ , and we use this to find k. So

$A(t) = A(0)e^{-kt}$

$0.5A(0) = A(0)e^{-5750k}$

$e^{-5750k} = 0.5$

$\ln{e^{-5750k}} = \ln{0.5}$

$-5750k = \ln{0.5}$

$k = -\frac{\ln{0.5}}{5750}$

$k = 0.00012054733$

$A(t) = A(0)e^{-0.00012054733t}$

A scientist determined that the bones from a mastodon had lost 77.8 % of their carbon-14. How old were the bones at the time they were discovered?

Had 100 - 77.8 = 22.2% remaining, so this is t for which:

$A(t) = 0.222A(0)$

Then

$0.222A(0) = A(0)e^{-0.00012054733t}$

$e^{-0.00012054733t} = 0.222$

$\ln{e^{-0.00012054733t}} = \ln{0.222}$

$-0.00012054733t = \ln{0.222}$

$t = -\frac{\ln{0.222}}{0.00012054733}$

$t = 12485$

The bones were 12,485 years old at the time they were discovered.

8 0

3 years ago

Write a word problem that would have the solution <br> p<21<br> Lineunder neath the

Dimas [21]

The line underneath the inequality line(arrow) means p is less than OR EQUAL to 21.
An example off the top of my head would be, Rachel just started a new job that pays 7 dollars per hour. She only worked 3 hours and decided she wanted to go to the mall to buy some clothes. How much money does Rachel have to spend?
And your answer is right there

5 0

3 years ago

Todd is painting a banner on a wall in the cafeteria. The banner is in the shape of a rectangle and has a blue background. Todd

anastassius [24]

Well todd cant use all of the paint because that would be just waisting it because he has enough paint to cover the banner

6 0

3 years ago

Simplify- 28 x*5 y*-3 z w

Simplify- 28 x5 y-3 z w