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ladessa [460]
3 years ago
13

The average of 16 and x is 3. Find x.

Mathematics
2 answers:
IrinaK [193]3 years ago
6 0

Answer:

x = - 10

Step-by-step explanation:

Average is calculated as

average = \frac{sumofdata}{count} , thus

\frac{16+x+3}{3} = 3

Multiply both sides by 3 to clear the fraction

19 + x = 9 ( subtract 19 from both sides )

x = - 10

grigory [225]3 years ago
6 0

Answer:

x=-10

Step-by-step explanation:

:)

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3 years ago
In a class room 3/10 of the students are wearing blue shirts and 3/5 are wearing white shirts there are 20 students In The class
shtirl [24]

Total number of students in the class = 36

Number of students wearing blue shirts = (1/6) * 36

                                                                = 36/6

                                                                = 6

Number of students wearing white shirts = (2/3) * 36

                                                                 = 2 * 12

                                                                 = 24

Then

Number of students not wearing blue or white shirts in the class = 36 - (6 + 24)

                                                                                                       = 36 - 30

                                                                                                       = 6

So 6 students in the class are wearing a shirt other than a blue or a white shirt. I hope the procedure is clear enough for you to understand.

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3 years ago
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