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
AleksAgata [21]
3 years ago
7

1. A dining hall had a total of 25 tables-some long rectangular tables and some round

Chemistry
1 answer:
TEA [102]3 years ago
7 0

x = 20 long tables

y = 5 round table

Explanation:

We have the following system of equations:

x + y = 25

8x + 6y = 190

From the first equation we have:

x = 25 - y

And we replace x in the second equation:

8(25 - y) + 6y = 190

200 - 8y + 6y = 190

200 - 2y = 190

200 - 190 = 2y

10 = 2y

y = 5

Now we insert the value of y in the next equation:

x = 25 - y

x = 25 - 5

x = 20

Learn more about:

system of equations

brainly.com/question/1748197

brainly.com/question/1658819

#learnwithBrainly

You might be interested in
23
grigory [225]

Answer:

The anser is C

Explanation:

This is because the fungi and bacteria are the decomposer, and their job is to decompose dead organism.

7 0
3 years ago
Read 2 more answers
What are 4 similarities of Metals, Nonmetals, and Metalloids?
igor_vitrenko [27]
The answer is           


e o i and a



not really sure forgive me if im wrong


7 0
3 years ago
3. 200 ml of 0.2 M HCl is neutralized with 0.1 M
algol [13]

Answer:

  • <u><em>a. 0.1 M</em></u>

Explanation:

By definition, <em>half neutralization</em> is the point at which half of the acid has been neutralized.

The neutralization reaction that you are studying is the acid-base reaction:

  • HCl (aq) + NaOH (aq) → NaCl(aq) + H₂O (aq)

Then, since the starting molarity of the acid (HCl) is 0.2 M, you just need to find half of that concentration:

  • Half molarity = M / 2 = 0.2 M / 2 = 0.1 M

So, the answer is the first choice: a. 0.1 M.

3 0
3 years ago
Which of the following is a half-reaction? A. Zn+CuSO4−&gt; B. 2Cl−−&gt;Cl2+2e− C. H2+1/2O2−&gt;H2O D. −&gt;Cu+ZnSO4
malfutka [58]

Answer:

2Cl——>Cl2+2e-

Explanation:

It shows an electron loss or gain

8 0
3 years ago
a pro golfer hits 45.0-gram golf ball, giving its speed of 75.0 m/s. what is the momenntum has the golfer given to the ball
AfilCa [17]
Momentum = mass x velocity. 45g = 0.045kg. 0.045 x 75 = 3.375 kgm/s
6 0
3 years ago
Other questions:
  • as electrons pass through a particular device magnets begin to rotate. this rotation is then used to power devices such as ceili
    12·2 answers
  • An element or compound which occurs naturally in the earth is a alloymineralrock.
    7·1 answer
  • Calculate the mole fraction of methane in the inital mixture assuming the temperature and volume remain constant
    13·1 answer
  • What is the golden rule of lighting safety?
    10·1 answer
  • While washing his hands before the client consultation with Chloe, Jayden dropped some water onto the countertop. When he came b
    8·1 answer
  • How does a scientist know where on the periodic table to put a newly discovered element?
    8·1 answer
  • How many atoms are there in a molecule?
    6·1 answer
  • Give a brief background of the development of nuclear power.
    6·1 answer
  • How many moles of solute are present in 150mL of 0.30 mol/L NaOH solution
    15·1 answer
  • A solution is made using 245.9 mL of phenol (density 1.070 g/mL) and 400.0 mL of water (density 1.000 g/mL). What is the molalit
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!