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
sergey [27]
3 years ago
9

A bar of brass contains 400g of copper and 200g of zinc.Write the ratio of copper to zinc in its lowest terms​

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
4 0

Answer:

2 : 1

Step-by-step explanation:

The ratio of copper to zinc is

400 : 200 ← divide both parts by 200

= 2 : 1 ← in simplest form

You might be interested in
A standard die is rolled 360 times in hopes of rolling a 5 or 6. So the probability of success is p=1/3. Find the standard devia
lana [24]

Answer: option 1 is the correct answer

Step-by-step explanation:

Number of times for which the die was rolled is 360. It means that our sample size, n is 360.

The probability of rolling a 5 or a 6 is 1/3. It means that probability of success,p = 1/3. The probability of failure,q is

1 - probability of success. It becomes

1 - 1/3 = 2/3

The formula for standard deviation is expressed as

√npq. Therefore

Standard deviation = √360 × 1/3 × 2/3

= √80 = 8.9443

Standard deviation is approximately 8.9

4 0
3 years ago
Plz help me with this :(
koban [17]

Answer:

m is equals to 49 degree + 31 degree so which means it's 80°

6 0
3 years ago
Which of the following is a false statement? Solid substances need different temperature of heat to melt them. All solid substan
maria [59]

Answer:

All solid substances require the same temperature and heat to melt them.

Step-by-step explanation:

Depending on the substance, the required heat to melt it changes, and is not the same for every solid.

4 0
3 years ago
an airline is trying to promote its new Boston to Atlanta flight. the usual price for this flight is $315.00. however the airlin
Veronika [31]

\begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{40\% of 315}}{\left( \cfrac{40}{100} \right)315}\implies 126~\hfill \underset{\textit{after discount}}{\stackrel{315~~ - ~~126}{189}}

8 0
1 year ago
What is 15% of 10.00
natka813 [3]

$1.50

I hope this is what you need

3 0
3 years ago
Other questions:
  • Prove tan3A= (cos(2A)-cos(4A))/ (sin(4A)- Sin(2A)) ...?
    13·1 answer
  • 1/5+5/8=? Please help me with this question
    14·1 answer
  • 5)
    13·2 answers
  • Nasir baked a pie and cut it in fourths. He then cut each piece in half. what fraction of the original pie does each piece repre
    10·1 answer
  • There is a bag filled with 3 blue and 4 red marbles.
    7·1 answer
  • Dry ice is carbon dioxide in a solid state. Its freezing point is –78.5°C. You use dry ice to freeze liquid mercury that is at r
    15·2 answers
  • First One To Solve Gets Brainlyest
    10·2 answers
  • What is the square root of –16?<br> A. –8i<br> B. –4i<br> C. 4i<br> D. 8i
    8·2 answers
  • What is 1 + 7k + k = -7? With work provided
    14·2 answers
  • Please help me asapppp<br><br> ty :)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!