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Sergeu [11.5K]
3 years ago
5

Solve the inequality. 2n/7 ≤ 4, but it needs to be in set-notation.

Mathematics
1 answer:
son4ous [18]3 years ago
6 0

Answer

n <u>< </u>14

Step-by-step explanation:

simplify 2n<28

2n/2<28/2

simplify n<14

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Sophia pays $19.99 membership fee for an online music store. If sophia purchases n songs for $0.99 each write the expression for
Alona [7]

Answer:

The expression for the total cost is x = 19.99 + 0.99n .

Step-by-step explanation:

Let us assume that the total cost be x.

As given

Sophia pays $19.99 membership fee for an online music store.

If sophia purchases n songs for $0.99 each .

Than the expression becomes

Total cost = Membership fee + Cost of n songs

x = 19.99 + 0.99n

Here n represented the number of songs.

4 0
3 years ago
What's the standard equation of the circle with the general equation x2 + y2 + 4x – 2y – 20 = 0? answers: 1) (x + 2)2 + (y – 1)2
gizmo_the_mogwai [7]

Answer:

4).  (x + 2)^2 + (y - 1)^2 = 25.

Step-by-step explanation:

x^2 + y^2 + 4x - 2y - 20 = 0

x^2 + 4x + y^2 - 2y = 20

Completing the square on the x and y terms:

(x + 2)^2  - 4 + (y - 1)^2 - 1 = 20

(x + 2)^2 + (y - 1)^2 = 20 + 4 + 1

(x + 2)^2 + (y - 1)^2 = 25.

3 0
3 years ago
What is the sum of the angle measures in a 22-gon?<br><br> 360°<br> 2,200°<br> 3,600°<br> 3,960°
Alex777 [14]

Answer:

3600

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
For $ (x) = 2x+1 and g(x) = x - 7, find (f •g)(2).
blondinia [14]

Answer:

3x - 14

Step-by-step explanation:

f = 2x + 1

2x + 1 * g

g = x - 7

2x + 1 * x - 7 = 3x - 7

3x - 7 * 2 = 3x - 14

Comments:

Hope this helped (:

also I assumed the $ = f at the begining so please let me know if I am wrong

7 0
3 years ago
20 POINTS HURRY PLEASE
irina1246 [14]

Answer:

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Step-by-step explanation:

15² = 12² + 8²

225 = 144 + 64

225 = 208 is a false statement

So not a right angle triangle

4 0
3 years ago
Read 2 more answers
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