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vlada-n [284]
3 years ago
13

Twice the difference of a number and seven is equal to three times the sum of the number and seven

Mathematics
1 answer:
Nana76 [90]3 years ago
5 0
2(n-7) = 3(n+7)
2n-14 = 3n + 21
   -35  = n  (answer)
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Alondra says that (12 + 31) × 5 is equivalent to 12 + 31 × 5 because of the associative property.
Tju [1.3M]

Answer:

Step-by-step explanation:

The associative property states that you can add or multiply regardless of how the numbers are grouped.

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Graph the function defined by the parametric equations x = 2t3 – 3t and y = -2t2 – 1 over the parameter
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Step-by-step explanation:

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write the equation of a line in any form that is parallel 2y = 4x + 8 through the point of (1,3) plz and thank you
V125BC [204]

Answer:

y = 2x+1

Step-by-step explanation:

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Can someone help me
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3 years ago
Solve for z: 11=6|-2z| -5
skad [1K]

Answer:

the roots are {-4/3, 4/3}

Step-by-step explanation:

Begin the solution of 11=6|-2z| -5 by adding 5 to both sides:

11=6|-2z| -5 becomes 16 = 6|-2z|.

Dividing both sides by 12 yields

16/12 = |-z|

There are two cases here:  first, that one in which z is positive and second the one in which z is negative.

If z is positive, 4/3 = -z, and so z = -4/3, and:

If z is negative, 4/3 = z

Thus the roots are {-4/3, 4/3}

3 0
3 years ago
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