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zmey [24]
1 year ago
10

Over the last three evenings, Debra received a total of 110 phone calls at the call center. The second evening, she received 4 t

imes as many calls as the third
evening. The first evening, she received 8 more calls than the third evening. How many phone calls did she receive each evening?
Х
5
?
Number of phone calls the first evening: 0
Number of phone calls the second evening: I
Number of phone calls the third evening: 0
Mathematics
1 answer:
Elza [17]1 year ago
4 0

Answer:

See below.

Step-by-step explanation:

Total = 110

Let calls on third evening = x

second evening = 4x

first evening = x + 8

=> x + 4x + x + 8 = 110

=> 6x = 102

=> x = 17

First evening = x = 17 calls

Second evening = 4x = 68 calls

Third evening = x + 8 = 25 calls

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3 years ago
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Answer:

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3 0
3 years ago
Please Help!
vaieri [72.5K]

You're given an if-then statement which has the structure

"If A, then B"

where A and B are some events.

The converse of this kind of statement reverses the roles of A and B, so that it would say

"If B, then A"

Not to be confused with the inverse, which is the negation of both events and says

"If <em>not</em> A, then <em>not</em> B"

as well as the contrapositive, which is the converse of the inverse, and says

"If <em>not</em> B, then <em>not</em> A"

A bi-conditional statement is sort of a combination of the original statement and the converse, one that says both

"If A, then B"

as well as

"If B, then A"

which means that given either A or B, the other one is also true. Typically this gets condensed into one statement in the form

"A if and only if B"

(and sometimes "if and only if" is abbreviated "iff")

For the given statement,

"If a person is the 44th President of the United States, then that person is Barack Obama"

the converse would be

"If a person is Barack Obama, then that person is the 44th President of the United States"

Then a bi-conditional version of this statement would be

"A person is the 44th President of the United States <em>if and only if</em> that person is Barack Obama"

6 0
3 years ago
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