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Yuri [45]
3 years ago
7

Else purchased a prepaid phone card for $15. Long distance calls cost 6 cents a minute using this card. Elsa used her card only

once to make a long distance
cal. If the remaining credit on her card is $13.50, how many minutes did her call last?
Mathematics
1 answer:
Ede4ka [16]3 years ago
7 0

Answer:

25 minutes

Step-by-step explanation:

First you subtract the original amount on the card from the remaining amount left.

So you can get the amount of money spent on that call.

$15 - $13.50 = $1.50

Then you divide that number by how much it cost per minute.

$1.50 ÷ 6 = 0.25

Then you get your answer!

She was on the phone for 25 minutes

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Dahasolnce [82]

Answer:

The answer is 17

A function is a relation in which each possible input value leads to exactly one output value. For example, we say “the output is a function of the input.”

Step-by-step explanation:

f(-7)=3-2x

3-2(-7)

3 - -14= 17

4 0
3 years ago
Find the center and radius of this circle x^2+y^2-6x-10y+30=0
Vsevolod [243]

Answer:

The circle's centre is at the position (3, 5), and it has a radius of 2

Step-by-step explanation:

First let's put it in a useful format by completing the squares:

x² + y² - 6x - 10y + 30 = 0

x² - 6x + y² - 10y = -30

x² - 6x + 9 + y² - 10y + 25 = -30 + 9 + 25

(x - 3)² + (y - 5)² = 4

This tells us that the centre position is (3, 5) and the radius is √4, or 2

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3 years ago
Help
earnstyle [38]
Aas is not d triangle buddy
8 0
3 years ago
Help is very much needed
Nikitich [7]

Answer:

IT'S NEGATIVE 3. HOPE THIS HELPS...

8 0
3 years ago
The Temperature is 50F. The temperature will decrease by 4F each hour. Let h be the numbers of hours.
Marysya12 [62]

Answer:

a. 50 - 4h < 32

Step-by-step explanation:

The question is "When will the temperature be below 32F?" so it can't be less than or equal to (≤), it has to be less than (<).

If the temperature is <u>decreasing </u> every hour you have to decrease 4 for each hour.

hope that helps!

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3 years ago
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