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
raketka [301]
3 years ago
13

An alloy is composed of nickel, zinc, and copper in a 7:2:9 ratio. How many kilograms of each metal is needed to make 3.8 kg of

this alloy?
Mathematics
1 answer:
Tamiku [17]3 years ago
6 0
Ni : Zn: Cu = 7:2:9 =7x : 2x : 9x

7x+2x+9x = 3.8
18x=3.8
x=3.8/18=1.9/9≈0.21

Ni:   7x=7*0.21=1.47 ≈1.5 kg
Zn:  2x=2*0.21=0.42≈0.4 kg
Cu: 9x=9*0.21=1.89 ≈1.9 kg

Check 1.5+0.4+1.9 =3.8 True
You might be interested in
The volume of a cylinder is 169 in.3 and the height of the cylinder is 1 in. What is the radius of the cylinder?
LenKa [72]

Answer:

4.71

Step-by-step explanation:

6 0
4 years ago
A paper plate has a diameter of 35 yards. What is the circumference of the plate?
mihalych1998 [28]
Pi is multiplied by diameter so,
35 x pi= 109.995
tell me how many decimal places should the finals should be so that I can round off
6 0
3 years ago
1. Drag Each Tile To The Correct Location On The Inequality.
velikii [3]
Can you let me know when you get the answer?
5 0
3 years ago
Read 2 more answers
Given the linear equation 2x + y = 6, perform the necessary operations to put the equation into the proper general form. Explain
likoan [24]

Step-by-step explanation:

The general equation is y = mx + c...

The given equation is 2x + y = 6

Firstly, move everything on the left except the y to the right.i.e.

y = 6 - 2x

Secondly, rearrange the values on the right to look just like the general equation.

y = -2x + 6

The equation is now in proper general form because it matches the format laid down.

3 0
4 years ago
Is this right? Algebra II
Doss [256]
I think it is. Dont take my word for it tho

5 0
4 years ago
Other questions:
  • What is the value of x^2+4 for x=5?<br>A)14<br>B)21<br>C)29<br>D)41<br>​
    6·2 answers
  • Joel has pans of brownies. The length of each brownie pan is 7 cm and the width is 9 cm. Find the area of the brownie pan.
    14·2 answers
  • Can you please find x
    14·1 answer
  • Prove that any number raised to the 0'th power equals 1
    6·1 answer
  • Factor completely: 16x2 − 81
    10·1 answer
  • Write statements for the following algebraic expressions:
    14·1 answer
  • Help a girl out this is 9th grade math is really appreciate it
    12·1 answer
  • In c it says shaded it got cut if indeed help please
    9·1 answer
  • PLEASE HELP ASAP I WILL GIVE BRAINLYEST!!!
    7·1 answer
  • Prove the following trigonometric identities
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!