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allsm [11]
3 years ago
5

If n represents the amount of songs stored on an MP3 player, analyze the meaning of the expressions n + 7, n - 2, 4n, and n divi

ded by 2
Mathematics
1 answer:
zmey [24]3 years ago
3 0
N + 7  means that he is adding 7 songs to the MP3 player
n-2 would mean he deleted two songs
4n means he has four times the amount of songs
and n/2 means he deleted 1/2 of them
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If a is a negative number, then a(1/a) is equal to -1. If a is a negative number and b is a negative number, then product ab is
Firdavs [7]

Both claims are false. In fact, a and \frac{1}{a} are one the multiplicative inverse of the other. This means, by definition of multiplicative inverse, that

a \cdot \dfrac{1}{a} = 1 \quad\forall a \in \mathbb{R}

So, it doesn't matter if a is positive or negative: the multiplication of one number and its inverse will always be 1: for example,

(-2) \cdot \dfrac{1}{-2} = \dfrac{-2}{-2} = 1

Similarly, when you multiply two number, the sign of the product depends on the sign of the factors as follows:

  • (+) \cdot (+) = (+)
  • (+) \cdot (-) = (-)
  • (-) \cdot (+) = (-)
  • (-) \cdot (-) = (+)

So, the multiplication of two negative numbers is a positive number.

8 0
3 years ago
What is the solution?<br> A. 1.87<br> B. 1.61<br> C. 3.73<br> D. 1.13
quester [9]
Try A:
6^(2*1.87) = 813.365

Try B:
6^(2*1.61) = 320.366

Try C:
6^(2*3.73) = 638275.725

Try D:
6^(2*1.13) = 57.362

Which one seems like the best answer?
6 0
3 years ago
PLEASE HURRY!!!!!!<br> 10 points !!!!!!!!!!! What is the value of x??
horsena [70]

Answer:

x = 98°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

x is an exterior angle and 53° and 45° are the opposite interior angles, hence

x = 53° + 45° = 98°

3 0
3 years ago
Elijah’s workout at the gym consist of the elliptical and treadmill. After burning 450 cal on the elliptical machine, Elijah swi
krek1111 [17]
The answer is 375

30*12.5 is equal to 15*25
15*25= 375
Plz mark as Brainly
7 0
2 years ago
What is the length of a rectangle that has a width of 2.5 centimeters and an area of 20.5 square centimeters?
olchik [2.2K]
Do 20.5 divided by 2.5 which equals
8.2
7 0
4 years ago
Read 2 more answers
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