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
Anna11 [10]
3 years ago
15

A metal worker has several 1-kilogram bars of a metal alloy that contain 23% copper and several 1-kilogram bars that contain 79%

copper. How many bars of each type of alloy should be melted and combined to create 48 kilograms of a 44% copper alloy?
Mathematics
1 answer:
astraxan [27]3 years ago
4 0

Answer:

30 each of 23% bars and 18 each of 79% bars

Step-by-step explanation:

If x is the number of 1 kg 23% copper bars, and y is the number of 1 kg 79% copper bars, then:

x + y = 48

0.23x + 0.79y = 0.44(48)

Substituting and solving:

0.23x + 0.79(48-x) = 0.44(48)

0.23x + 37.92 - 0.79x = 21.12

16.8 = 0.56x

x = 30

y = 48 - x

y = 18

You need 30 each of 23% bars and 18 each of 79% bars.

You might be interested in
Determine the mean absolute deviation of the data.9, 7, 11, 10, 8
Darya [45]

Answer:

mean=average which means you add all of the numbers and divide by the number of numbers there are, which sounds pretty confusing, but i'll show you! 9+7+11+10+8=45, now you divide 45 by 5, which is how many numbers there are that we had to add. 45 divided by 5 is 9, which means the MEAN/average is 9!

Step-by-step explanation:

hope this helps!

5 0
3 years ago
3 hundred thousand 3 thousand 8 hundred 4 tens
alekssr [168]

Answer:

3384

Step-by-step explanation:

3 0
3 years ago
Which table can be represented by a line?<br> A)<br> А<br> B)<br> B<br> C С<br> D<br> D
wel

Step-by-step explanation:

if you really want to get answer you should follow me

6 0
2 years ago
I need help with 1 and 3 please
schepotkina [342]
For #1
city A's mean would be 10.5, then you would divide it by the number of numbers there is which is 5,So 10.5/5 is 2.1

city B's mean would be 11.6  then you would divide it by the number of numbers there is which is 5, So 11.6/5 is 2.32.

thats all I have don't know how to do #3 sorry 
4 0
3 years ago
99is 35percent of????????????????????
Arada [10]
Answer is 283
283 x 0.35 = 99.1

3 0
3 years ago
Other questions:
  • Solve the system of equations using the linear combination method. {9x+5y=35 2x+5y=0 Enter your answers in the boxes.
    14·1 answer
  • How to be best in math?
    15·1 answer
  • PLEASE HELP!
    7·1 answer
  • The vertices of a triangle are A(2,4),B(-1,-3),and C(3,6). Find the new vertices. Use the rule (x,y) &gt;&gt;&gt;(x-3,y+5)to tra
    8·1 answer
  • write the equation of the line that is parallel to the line y = 2x 2 and passes through the point (5, 3). a. y = 2x - 7 b. y=-1/
    7·1 answer
  • Help geometry question
    14·1 answer
  • Mr. Fernández packed 31 red apples and 41 green apples into a box for a customer. He packed 8 boxes like this. Mr. Fernández use
    13·1 answer
  • Need help on this one too ​
    6·1 answer
  • Assume that y varies directly with x then solve y = 2.5 x = .5 when x = 20
    5·1 answer
  • In a game using a spinner with five equal parts numbered 1 to 5, a contestant wins when the spinner lands on an odd number. Is t
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!