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Anika [276]
3 years ago
10

A metallurgist needs to make 21 mg of an alloy containing 85% nickel. She is going to melt that 65% nickel with pure nickel. How

much of each should she use?
Mathematics
1 answer:
devlian [24]3 years ago
7 0
99 because if u divided it
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A rancher decreased the number of his
tamaranim1 [39]

Answer:

20%

Step-by-step explanation:

150-120 is 30

30 is 1/5 of 150

1/5 is .2, which is 20%

Hope that helps~

7 0
3 years ago
Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE
Furkat [3]

Answer:

x = -6 and x = 4

Step-by-step explanation:

In math, the critical points of a function are the points where the derivative equals zero.

So, first we will find the derivative of the function. The derivative is:

f'(x)=3x^2 +6x-72

Now, we are going to make the derivative equal zero and find the answers of the equation.

3x^2 +6x-72=0\\3(x^2 +2x-24)=0\\3(x+6)(x-4)=0\\

So we have that the critical points are the answers to this equation:

x+6= 0 \\x= - 6

and

x-4=0\\x=4

Thus, the critical points are x=-6 and x=4

8 0
3 years ago
6 cousins inherited a total of 58 of their great aunt's assets which they divided evenly what fraction of their great aunt's ass
mina [271]

Answer:

9 1/9 per cousin

Step-by-step explanation:

if the aunt has 58 items to be distributed to 6 cousins, we would set a fraction of 58/6. performing that is 9 with 4/6 left over.

since there is 6 cousins, there will be 2/3 divided by 6 = 2/18, or 1/9

4 0
2 years ago
2(3 – 4a) + 5(a – 7)
PilotLPTM [1.2K]

Answer:

The answer is -(29+3a).

Step-by-step explanation:

=2(3-4a)+5(a-7)

= 6- 8a +5a -35

= 6-35-8a+5a

= -29-3a

= -(29+3a)

<em>Hope</em><em> </em><em>it helps</em><em>.</em><em>.</em>

6 0
3 years ago
Read 2 more answers
Write 0.414141414141 as a fraction?
igor_vitrenko [27]

Answer:

The fraction is 41/99.

Step-by-step explanation:

The steps are :

let \: x \: be \: fraction,

x = 0.414141.....

100x = 41.414141.....

100x - x = 41.414141.....  \:  -  \: 0.414141.....

99x = 41

x =  \frac{41}{99}

4 0
3 years ago
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