1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DochEvi [55]
3 years ago
10

What expression represents the action "to go down 3 floors"

Mathematics
1 answer:
il63 [147K]3 years ago
6 0
X - 3, where x represent the floor you are on currently.

Hope this helps!
You might be interested in
Select the correct order for the following numbers
Andru [333]

Answer:

cdab

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
How many grams of NH3 are required to produce 4.65 g of HF
nignag [31]

1.326 grams of NH3 are required to produce 4.65 g of HF.

Step-by-step explanation:

Balanced chemical reaction is written first to know the number of moles taking part in original reaction.

NH3 +3 F2 ⇒3 HF  +  NF3

Given:

mass of HF = 4.65

First the number of moles of HF in 4.65 grams is calculated by using the formula:

number of moles (n) = \frac{mass}{atomic mass of 1 mole}

atomic mass of HF = 20 grams/mole

putting the values in the above equation number of moles can be found.

n = \frac{4.65}{20}

  = 0.235 moles of HF are given.

From the equation it can be said that:

1 mole of NH3 reacts to form 3 moles of HF

so, x moles of NH3 would react to form 0.235 moles of HF

\frac{3}{1} = \frac{0.235}{x}

3x = 0.235

x = \frac{0.235}{3}

x = 0.078 moles of NH3 is required.

The moles are converted to mass by applying the formula:

mass = atomic mass X number of moles (atomic mass of NH3 = 17 grams/mole)

        putting the values in the formula

mass = 17 X 0.078

mass = 1.326 grams

8 0
3 years ago
pls help immediately! this is due in 3 mins :/.(i’ll mark brainiest if u don’t leave a link just help me pls!)
Serhud [2]

Answer:

They help the tree reach deep into the sandy soil for nutrients and ground water.

Step-by-step explanation:

The job of a tree's roots is to collect water and nutrients.

5 0
3 years ago
The scale from a square park to a drawing of the park is 5 miles to 1 miles. The actual park has an area of 1,600 m×2 what is th
Flauer [41]

The user corrected that the scale of a drawing of a park reads: 5 miles to 1 cm , and we know that the park measures 1,600 square meters (user insisted that this measure is given in square meters and not square miles).

So we have to convert the 1600 square meters into miles, knowing that 1 meter is the same as: 0.000621371 miles

then meters square will be equivalents to:

1 m^2 = (0.000621371 mi)^2

then 1600 m^2 = 0.00061776 mi^2

now, since 5 miles are represented by 1 cm, then 25 square miles will be represented by 1 square cm

and therefore 0.00061776 square miles will be the equivalent to:

0.00061776 / 25 cm^2 = 0.000024710 cm^2

So and incredibly small number of square cm.

I still believe that some of the information you gave me are not in meters but in miles. (For example, the park may not be in square meters but in squared miles). The park seems to have the size of a house according to the info.

3 0
1 year ago
What is an equation for the line that passes through the points (-2,3) and (2,1)?
Nastasia [14]

Answer:

y = -1/2x + 2

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • A leaky valve on the water meter overcharges the residents for one gallon of water every 1 1 over 3 months. The overcharged amou
    7·2 answers
  • Which statements are true about markups and markdowns? Check all that apply. To find a markup price, add the original amount to
    5·2 answers
  • lenox ironed 1/4 of shirts over the weekend,she plans to split remainder of work equally over the next 5 evenings. what fraction
    6·2 answers
  • HSDhDfhDhDcgjdjdjzffnzfggnDdt
    15·1 answer
  • 2/3 of a class are girls
    13·1 answer
  • Mortar is made by mixing cement, sand and quicklime in the ration 1:2:3
    15·1 answer
  • Please help and thank you!
    13·2 answers
  • Ill mark branlist plls help
    10·1 answer
  • A window is twice as long as it is wide. The area of the window is 2x where x
    10·1 answer
  • What is 1200 x 1200?<br><br> (this is just becouse i was bored) <br> Plz answer me <br> thx
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!