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
vaieri [72.5K]
3 years ago
12

How many pounds of a 23% zinc alloy must be mixed with a 42% zinc alloy to make 516 pounds of a 37.25% zinc alloy?

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0

Answer:

(A)129 Pounds

Step-by-step explanation:

Let x be the number of 23% zink alloy

Therefore:

Since the total result is 516 pounds

The number of pounds of 42% zink alloy =516-x pounds

We then have the resulting equation:

0.23x+0.42(516-x)=0.3725*516

0.23x+216.72-0.42x=192.21

Colect like terms

0.23x-0.42x=192.21-216.72

-0.19x=-24.51

Divide both sides by 129

x=129 pounds

Therefore, the number of pounds of 23% zink alloy that must be mixed is 129 pounds.

You might be interested in
In triangle ABC, it is given that A = 70 degree, B = 52 degree, BO and CO are the bisectors of angle B and angle C
natta225 [31]

Answer:

Angle OCB= 35 degrees and Angle BOC= 119

Step-by-step explanation:

ANGLE OCB= 1/2 C (Construction of bisector)

= 1/2 70

= 35

ANGLE OBC= 1/2 B (Construction of bisector)

= 1/2 52

= 26

Therefore, in triangle BOC,

180 degree= ANGLE OBC+ANGLE BOC+ANGLE OCB

180= 35+26+ANGLE BOC

180= 61+ANGLE BOC

ANGLE BOC= 180-61

ANGLE BOC= 119

6 0
3 years ago
Read 2 more answers
Jackson bought 5 ounces of raisins for $4. How much could he have buy for 1$?
Yuliya22 [10]
If you do 5 divide by 4 then you can find what 1$ would be worth so ie.
5 divide by 4 is 1.25 which means that for 1$ you could buy 1.25 ounces
4 0
3 years ago
Read 2 more answers
BRAINLIST IF CORRECT! 10 POINTS!<br> What is the constant of proportionality if x is 3 and y is 9?
velikii [3]

Answer:

constant of proportionality, k is 3

Step-by-step explanation:

constant, k= y/x

k=9/3

 = 3

7 0
3 years ago
what is the height of a box with a volume of 50 cubic meters, length of 10 meters, and which of 2 meters
Wittaler [7]
H = v over l (w)
so 50 divided by 20
= 2.5
4 0
3 years ago
Read 2 more answers
Which one is greater 3/8 or 2/6
Katyanochek1 [597]

Answer: 3/8

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Tameron made a recipe that called for 1/4 teaspoon of salt. If the recipe is doubled, how much salt is needed??
    9·1 answer
  • 20 multiplied by three
    8·2 answers
  • What is the value of x? enter in the box.​
    15·2 answers
  • Do Number 20 PLEASE I have 2 go to sleep so someone Answer this
    6·2 answers
  • Explain? estimate and then record the product?
    15·1 answer
  • (Q10) It's a long question so I will give you 30 points for answering it. Thank You!
    11·1 answer
  • Solve the inequality.<br> -2(w+4) +9&lt;-11
    14·1 answer
  • What is the difference between a rational and irrational number?
    13·1 answer
  • Which one is right for this please
    15·1 answer
  • Solve the equation by finding the common denominator. Two and one third plus three and five elevens equals blank
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!