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Lostsunrise [7]
4 years ago
10

Paco's cell phone carrier charges him $0.20 for each text message he sends or receives, $0.15 per minute for calls, and a $15 mo

nthly service fee. Paco is trying to keep his bill for the month below $30. Which best describes the possible values of t, the number of texts he can send or receive? t can be any real number where 0 ≤ t < 75. t can be any whole number where 0 ≤ t < 75. t can be any real number where 0 ≤ t < 150. t can be any whole number where 0 ≤ t < 150.
Mathematics
2 answers:
4vir4ik [10]4 years ago
7 0

Answer:

t can be any whole number where 0 ≤ t < 75.

Step-by-step explanation:

Given is:

Paco's cell phone carrier charges him $0.20 for each text message he sends or receives, $0.15 per minute for calls, and a $15 monthly service fee. Paco is trying to keep his bill for the month below $30.

The fixed fee is $15.

So, he has a limit left30- 15 = $15 for his monthly calls and texts.

That is, the amount he has to pay for texting and calling has to be less than $15.

For texts, Paco is charged $0.20 for sending/receiving texts.

For calls, he is charged $0.15 per minute.

Let 't' represents the number of texts.

Let 'c' represents the number of calls.

Equation forms:

0.20t+0.15c

For Paco to send a maximum number of texts, he has to spend 0 minutes on calls.

Substituting c = 0

0.20t

t

That is, Paco has to send and receive less than 75 texts.

So, the inequality that best describes the number of texts Paco can send or receive to keep his bill less than $30 in a month is:

0\leq t

kirill115 [55]4 years ago
5 0
<span>t can be any whole number where 0 ≤ t < 75. is the answer

</span>
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You collect pennies. you start with one penny and double the number of pennies you have each day for the next 27 days. how many
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Imagine, at the first day you have only one penny. Then tomorrow you have 2 pennies, next day you have 4 (2x2), next day you have 8 (4x2), next day you have 16 (8x2).... and so forth.

It looks like geometric sequence isn't it? (the ratio between the number of pennies that you have from the 2nd day and the 1st day is 2)

So, by using geometric sequence theorem we can total those pennies until day-27

S (total pennies at day-27) = (1)(2^27-1) / 2-1 = 2^26 pennies

So, you have 2^26 pennies.. a big number of pennies huh?=))


{The formula is: S = a( r^n-1) / r-1
Where:
a= the number of pennies that you've got at the 1st day
n= number of days you spent to collect those pennies)
r= the ratio of the number of pennies}
7 0
3 years ago
Plz help me .....simplify the ratio of 0,0064kg to 32 grams<br>​
Degger [83]

9514 1404 393

Answer:

  1/5

Step-by-step explanation:

1 kg = 1000 g so your ratio is ...

  \dfrac{0.0064\text{ kg}}{32\text{ g}}=\dfrac{0.0064\cdot1000\text{ g}}{32\text{ g}}=\dfrac{6.4}{32}=\boxed{\dfrac{1}{5}}

4 0
3 years ago
The table shows data from a survey about the number of times families eat at restaurants during a week. The families are either
Talja [164]
<span>The best answer choice is:

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4 0
4 years ago
A certain type of ceral is sold in boxes of two different sizes. The price of the 8-ounce box is $2.48, and the rice of the 14-p
Bess [88]

Answer:

Step-by-step explanation:

The cereals are sold in boxes of two different sizes.

The price of the 8-ounce box is $2.48. It means that the cost per ounce of cereal in the 8-ounce box is

2.48/8 = $0.31 per ounce

The price of the 14-ounce box is $3.36. It means that the cost per ounce of cereal in the 8-ounce box is

3.36/14 = $0.24 per ounce

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4 0
3 years ago
Make r the subject of the formula: V=pier^2h
navik [9.2K]
If you mean π. Then, all that will be ;
V=πr²h
 First of all, you have to divide the both the sides by πh. You have to do this because the relationship between r and those two characters is multiplication. The opposite of multiplication is division. Anyway;
V/πh=πr²h/πh
V/πh=r²
  Next you have to take the square root of both sides. This is done to cancel the square. Anyway;
√V/πh=√r²
 The square root cancels the ². Anyway, you will be left with;
√V/πh=r
  So;
r=√V/πh.  
   Hope i helped. Have a nice day.
4 0
3 years ago
Read 2 more answers
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