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inessss [21]
2 years ago
6

Write and solve an equation. Three sevenths of a children's choir are boys. If there are 12 boys in the choir, how many children

, c, total are in the choir? Solve for c. Enter your answer in the box. children
Mathematics
1 answer:
Oduvanchick [21]2 years ago
8 0
It should be \frac{12}{28} so that makes c 28
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2 years ago
Find a compound proposition involving the propositional variables p, q, and r that is true when exactly two of p, q, and r are t
VLD [36.1K]

Answer:

Consider the proposition C=(p∧q∧¬r)∨(p∧¬q∧r)∨(¬p∧q∧r)

Step-by-step explanation:

This compound proposition C uses the outer disjunction (∨) then the proposition is true if and only if one of the three propositions (p∧q∧¬r),(p∧¬q∧r),(¬p∧q∧r) is true.

First, it is impossible that two or three of these propositions are simultaneously true. For example, if (p∧q∧¬r) and (p∧¬q∧r) are both true, then ¬r is true (from the first conjuntion) and r is true (from the second one), a contradiction. All the other possibilities can be discarded reasoning in the same way.

Since these propositions are mutually excluyent, C is true if and only if exactly one of the three propositions is true (and false otherwise). This can only happen if exactly two of p,q, and r are true and the other one is false. For example, (p∧q∧¬r) is true when p and q are true, and r is false.

8 0
3 years ago
OK so I have two questions to answer. So the first picture is question five in the second picture is question six.
Vesnalui [34]

Answer:

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Step-by-step explanation:

Assuming from the cut off picture, that we need to find the slope of ...

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In that case, 2.25 is the slope and 3 is the y-intercept

3 0
3 years ago
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