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
Sati [7]
3 years ago
6

An alloy composed of nickel, zinc, and copper in a 4:1:2 ratio. How many kilograms of each metal are needed to make 35 kg of thi

s alloy?

Mathematics
2 answers:
9966 [12]3 years ago
8 0

Answer:

Let X be the amount of each metal needed to make 35 Kg of this alloy.

We know that an alloy is composed of nickel, zinc and copper in a proportion

4:1:2. Therefore, we have:

4X+1X+2X = 35

7X = 35

X=\frac{35}{7}

X=5 Kg

Therefore, there are 5 \times 4 =20 kg of nickel, 1 \times 5 =5 kg of zinc, and 2 \times 5 = 10 kg of copper needed to make 35 kg of this alloy


gregori [183]3 years ago
7 0

Answer:


Step-by-step explanation:

The ration of weight of nickel, zinc, and copper in an alloy is 4:1:2

The weight of alloy can be written as

4x + x + 2x = 35 Kg

7 x = 35 Kg

X = 35 Kg/7

X = 5kg

The weight of nickel the alloy = 4 x 5 = 20 Kg

The weight of zinc in the alloy= 1 x 5 = 5kg

The weight of copper in the alloy = 2 x 5 = 10 kg


You might be interested in
Solve the following simultaneous equations in ELIMINATION way​
Allisa [31]

Answer:

Here is the solution...hope it helps:)

3 0
2 years ago
Which angle is vertical to <br><br> (Will reward)
xenn [34]
The angle vertical to it is DF
3 0
3 years ago
Your friend Michelle just graduated and has two job offers that she is considering. Both job offers pay the same, but JobA
just olya [345]

Money offered to Michelle per annum in Job A = $1700

Number of years she will work in job A = 5

Percentage of earnings per annum for her retirement plan = 6.60%

Money she will earn will be the simple interest at the end of 5 years.

We know that :

\color{plum}{ \tt{Simple \:  interest  =  \frac{Principle  \ \: \times  \: Rate  \:  \: \times \:  \:  Time}{100} }}

Principal = $1700

Rate = 6.60%

Time = 5 years

Which means :

=  \frac{1700 \times 6.60 \times 5}{100}

=  \frac{56100}{100}

= \color{plum}\$561

We also know that :

\color{plum}\tt \: Amount = Principal + Interest

Amount Michelle will earn at the end of 5 years for her retirement plan :

= 1700 + 561

=\color{plum}\bold{\$ 2261}

2261 can be rounded off to 2260.

Therefore, Michelle will earn <u>$2260</u> at the end of 5 years for her retirement plan.

5 0
2 years ago
Chance can wash the car in 2 hours, while Sandy can wash the same car in 4 hours. How many hours would it take for them to wash
VashaNatasha [74]
<span>1 hour and 1/3rd of an hour
</span>
so A is right 
4 0
3 years ago
Write the equation of the line described in point-slope form. Then, change to Standard Form. Contains points (3/2,-1/2) and (-1/
larisa [96]
Slope point form :
To put in slope point form, label any of the points as either X1,y1 and X and y, then plug in those values into the following equation form.
Y - y1 = m(X-X1)

But before, we must solve for the m value or slope.
M = y2-y1/x2-X1
M = 5/2 - -1/2 / -1/2 - 3/2.
M = 5/2 + 1/2 / -(1/2+3/2)
M = 6/2 / -(4/2)
M = 3/-2

Now we can place it in slope point and also in standard form of a line.

Y-y1 = m(X -X1)

Y - -1/2 = -3/2(X - 3/2)

Y + 1/2 = -3/2(X - 3/2)

This is in slope point form.

Y + 1/2 = -3/2x + 9/4
Y + 1/2 - 1/2 = -3/2x + 9/4 - 1/2
1/2 = 2/4
Y = -3/2x + 7/4
-3/2x = -6/4x
Y = -6/4x + 7/4
Y • 4 = 4( -6/4 X + 7/4)
4y = -6x + 7
4y + 6x = -6x + 6x +7

6x + 4y = 7

This is in standard form. If you have any questions of the steps just ask.
4 0
2 years ago
Other questions:
  • Matt borrows $1000 at 9% compounded monthly for 2 years. Find the total interest amount on the loan.
    13·2 answers
  • The dashed curve on the graph shows the initial function . What is the equation of the solid curve?
    6·1 answer
  • What is the least common multiple of 18,20 and 24?
    5·2 answers
  • What is the answer to this question
    8·2 answers
  • Geetha decides to take her puppy for a walk. After 90 feet, they stop to smell some roses. Then, Geetha runs into a friend 200 y
    8·1 answer
  • What Ln(z) is answer????!!
    14·1 answer
  • Find the rate of change in a table
    11·2 answers
  • Find more answers to 1+1
    13·1 answer
  • Expand and simplify (2x−12) ^2
    7·1 answer
  • Creating a dot plots. Use the data plot below to create a dot plot
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!