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anzhelika [568]
3 years ago
11

Reyna wants to mail a birthday package to her cousin. The post office told her it would take $5.70 in postage to send the packag

e. Reyna has 3 75-cent stamps and 20 45-cent stamps. Which of the following systems of inequalities correctly represents the constraints on the variables in this problem? Let x represent the 75-cent stamps and y represent the 45-cent stamps.
Mathematics
2 answers:
ololo11 [35]3 years ago
8 0
X = # 0.75 stamps y = # 0.45 stamps total postage = $5.70 
Alexeev081 [22]3 years ago
8 0

Answer:

The inequality representing the situation is 0.75x+0.45y\geq 5.70

Step-by-step explanation:

Let x represent the 75-cent stamps.

Let y represent the 45-cent stamps.

The inequality representing the number of stamps Reyna can use to mail the package is 0.75x+0.45y\geq 5.70

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Alexander needs to collect at least 120 cans for a food drive to urban community service credit he has already collected 64 item
Ahat [919]

Answer:

120-64=56

Step-by-step explanation:

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Solve the following equation algebraically. Represent your answer in simplest radical form, if necessary.
maria [59]
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7 0
3 years ago
FOR 47 POINTS PLEASE HELP
Julli [10]

Answer:

UV=25 units

Step-by-step explanation:

we know that

UW=UV+VW -----> by addition segment postulate

substitute the given values

4x+10=5x+5

solve for x

5x-4x=10-5

x=5

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3 0
3 years ago
What is the sum of the arithmetic sequence 151, 137, 123,..if there are 26 terms?
ElenaW [278]
First term: a1 = 151
common difference: d = -14 (we decrease by 14 each time, eg, 151-14 = 137)

nth term of this arithmetic sequence is...
an = a1+d(n-1)
an = 151+(-14)(n-1)
an = 151-14n+14
an = -14n+165

This will be used in the formula below

Sn = n*(a1+an)/2
<span>Sn = n*(151+(-14n+165))/2
</span><span>S26 = 26*(151+(-14*26+165))/2 ... replace every n with 26
</span>S26 = -624

The final answer here is choice C) -624
<span>
</span>
5 0
3 years ago
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