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Aleonysh [2.5K]
3 years ago
7

Pls Solve the equation.

Mathematics
2 answers:
aliya0001 [1]3 years ago
7 0

2.3x-5.4=-10

2.3x=-4.6

x=-2

larisa [96]3 years ago
3 0

1.1x+1.2x-5.4=-10\\ 2.3x=-4.6\\ x=-2

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A student solves a problem correctly 40 times out of 72 tries. Based on this data, what is the probability that the student inco
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Answer:

The probability of the student incorrectly solves the next problem is 44%.

Step-by-step explanation:

Let E be the event of solving a problem correctly.

Then E' is the event that the problem is solved incorrectly.

Now, recall the definition of probability.

probability of an event = \frac{number of favorable events}{total number of events}

So,

p(E) = \frac{40}{72}

Also,

p(E) + p(E') = 1 and

p(E') = 1 - p(E)

= 1 - \frac{40}{72}

= \frac{72-40}{72}

= \frac{32}{72}

= \frac{4}{9}

= \frac{4}{9} (100)

= 44% rounded.

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<em>Greetings from Brasil...</em>

The average for a set of 9 elements will be

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Let's make (A + B + C + D + E + F + G + H + I) like S

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Let us think.....

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According to the statement, we will include a number (element J) in the sum to obtain a mean of (20 - 4), that is:

<h3>(A + B + C + D + E + F + G + H + I + J) ÷ 10 = (20 - 4)</h3>

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