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Lady bird [3.3K]
3 years ago
15

the cost of a phone call lasting 3 minutes 30 seconds was 52.5 cents . at this rate what was the cost of a call lasting 5 minute

s 20 second
Mathematics
1 answer:
Effectus [21]3 years ago
6 0

Answer:

80 cents

Step-by-step explanation:

The easiest place to start for this is to calculate how much it costs per minute of call time. To do this, if we know that it costs 52.5 cents to call for 3.5 minutes, we can divide those two numbers to get how much it costs per minute.

52.5/3.5 = 15

If it costs 15 cents per minute, and we want to know how much it would cost to call for 5.33 (5 and 1/3 of a minute), then we multiply our 15 cents a minute by the number of minutes to get the final cost.

15 x 5.33 = 79.99

Because we can't have 99/100 cents, rounding up to 80 is important to get a proper answer.

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Bill is shopping for folders, notebooks, and pencils for the first day of school. A notebook costs 4 times as much as a folder.
spin [16.1K]

<u>Answer:</u>

$14

<u>Step-by-step explanation:</u>

Assuming the cost of folder to be x, then the cost of notebook will be 4 x and the cost of set of pencils will be 2 x.

Cost of the folder = $2

Cost of notebook = 4 × 2 = $8

Cost of pencil = 2 × 2 = $4

Total cost of 1 folder, 1 notebook and 1 set of pencils = $2 + $8 + $4 = $14

4 0
3 years ago
Factorize<br> ху<br> + 3x +3y<br> + 18
noname [10]

Answer:

(x+6)(y+3)

Step-by-step explanation:

  1. xy + 3x + 6y + 18
  2. x(y + 3) + 6(y+3)
  3. <u>(</u><u>x</u><u>+</u><u>6</u><u>)</u><u>(</u><u>y</u><u>+</u><u>3</u><u>)</u>
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2 years ago
Order these triangle with equal sides from least to greatest the triangles are equilateral scalene and isosceles
algol [13]

Answer:

equilateral

isosceles

scalene

7 0
3 years ago
Madison is cleaning the window in her room so she can see the stars at night. The window has 4 equal-size panes. What fraction r
sergiy2304 [10]
Answer: 1/4 should be the correct answer.
5 0
3 years ago
3. If 6x + 4 = 20 − 2x, then x = ?<br> a. 2<br> b. 6<br> c. 8<br> d. 16<br> e. 24
STALIN [3.7K]

Answer:

a

Step-by-step explanation:

6x+4=20-2x

Add 2 to each side

8x+4=20

Subtract 4 from each side

8x=16

Divide 8 by each side

x=2

3 0
3 years ago
Read 2 more answers
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