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myrzilka [38]
3 years ago
14

2n + 5 = n - 7 Solution: ?

Mathematics
1 answer:
horsena [70]3 years ago
5 0

Answer:

<h2>n = -12</h2>

Step-by-step explanation:

2n + 5 = n - 7          <em>subtract 5 from both sides</em>

2n + 5 - 5 = n - 7 - 5

2n = n - 12          <em>subtract n from both sides</em>

2n - n = n - n - 12

n = -12

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kvv77 [185]

Answer:

median

Step-by-step explanation:

The first step is to sort the numbers from largest to smallest (you could go the other way as well).

60 52 48 44 20 16 12

The median is the middle number 44 in this case. The median has 3 numbers on its left and 3 on its right (in this case). 44 has 60 52 48 or its left and 20 16 and 12 on its right.

The mean is the average. We'll call it the new average

The mean is 60 + 52 + 48 + 44 + 20 + 16 + 12 = 252

The new mean is 252 / 7 = 36

=====================

The old median is the average between the middle 2 numbers (before you added 60 you had 6 numbers)

52 + 48 + 44 + 20 + 16 + 12 = the average of 44 + 20 which 64/2 = 32

The old mean was (52 + 48 + 44 + 20 + 16 + 12)/6 = 32.

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The median increased from 44 to 32 = 12

The mean went from 32 to 36 which is 4

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3 0
3 years ago
Tom mows lawns, after mowing 5 lawns he made 100$. Assuming he
BARSIC [14]

Answer:

$20

Step-by-step explanation:

simple maths

5 0
3 years ago
How many batches of cookies can Robert make?
Finger [1]

Answer:

5 batches

Step-by-step explanation:

For this you need to divide the 2 fractions, and what ever you get will be the answer.

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<u>Final answer</u>

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Step-by-step explanation:

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Answer:

D) AB = AB  

Step-by-step explanation:

The reflexive property states that a value is equal to itself: x = x.

The reflexive property of length states that a length is equal to itself:

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8 0
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