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sashaice [31]
3 years ago
5

Five times the difference of a number and 12 minus 4 times the same number is – 36. What is the equation?

Mathematics
2 answers:
gregori [183]3 years ago
5 0

Step-by-step explanation:

let x be the number

5(x - (12 - 4x))= -36

3241004551 [841]3 years ago
4 0
5(x - 12) - 4x = -36
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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
Tamiku [17]
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
6 0
3 years ago
5(2f+3)+7. please simplify
Sergio [31]
Hi there!

5(2f+3)+7
= 10f+15+7
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Hope this helps!
3 0
3 years ago
Read 2 more answers
Find g. (-9)<br> g(+)= r^2 + 3r
oee [108]

Answer:

  • g(-9) = 64

Step-by-step explanation:

<u>Given function:</u>

  • g(r) = r² + 3r

<u>Find g(-9):</u>

  • g(-9) = (-9)² + 3(-9) = 81 - 27 = 64
7 0
3 years ago
Solve by unfolding: a0=2, and, n&gt;=1, a_n=7a_n-1.
vodomira [7]
We are told that the first term is 2.  The next term is 7(2) = 14; the third term is 7(14) = 98.  And so on.  So, the first term and the common ratio (7) are known.

The nth term of this geometric series is a_n = 2(7)^(n-1).

Check:  What is the first term?  We expect it is 2.  2(7)^(1-1) = 2(1) = 2.  Correct.

What is the third term?  We expect it is 98.  2(7)^(3-1) = 2(7)^2 = 98.  Right.<span />
6 0
3 years ago
.... someone pls help me !!! pleaseee
Archy [21]

Answer:

m=4 is the correct answer

6 0
2 years ago
Read 2 more answers
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