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3 years ago

X - x-2/6 = x-7/3 + 2/3

Mathematics

1 answer:

elena-s [515]3 years ago

3 0

X-x-2/6=x-7/3+2/3
-2/6+7/3-2/3=x
x= -2/6+5/3
x= 8/6
x= 4/3

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Substitution method x-7y=-9 -x+8y=10

max2010maxim [7]

Answer:

x = -2, y=1

Step-by-step explanation:

x-7y=-9---------------------equation 1

-x+8y=10-------------------equation 2

From equation 1, make x the subject of formula

x=7y-9----------------------equation 3

substituting x=7y-9 in equation 2,

-(7y-9)+8y=10

Expanding bracket

-7y+9+8y=10

Collecting like terms

8y-7y=10-9

y=1

substituting y=1 in 3

x=7(1)-9

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3 years ago

The data to represent average test scores for a class of 16 students includes an outlier value of 78. If the mean, including the

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Answer:

Step-by-step explanation:

Given that The data to represent average test scores for a class of 16 students includes an outlier value of 78.

We can find sum of all 16 test scores = 84(16) = 1344

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If outlier is removed new sum = 1344-78 = 1266

Number of entries without outlier = 15

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We find that average of new data increases.

Also whenever we remove outlier std deviation also would be reduced.

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3 years ago

Read 2 more answers

Al, Pablo, and Marsha shared the driving on a 1,500-mile trip. Which of the three drove the greatest distance on the trip?(1) Al

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Answer:

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Missing Content:

Since information on Pablo is not given, it is impossible to solve this problem. Let us assume some scenario for Pablo. Say:

(3)Pablo averaged 52.7 miles per hour and drove for 10 hours.

Step-by-step explanation:

Using this information, we can find out the data on Al,

Al drove 1 hour longer than Pablo so,

Time Al drove= 10+1 =11 hours

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We know that,

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3 years ago

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Step-by-step explanation:

A dominant ideology is a set of cultural beliefs that help to maintain powerful social, economic, and political interests. In dominant ideology voter are influenced by dominant groups and institutions of the society. At the end it these dominant groups that are benefited.

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3 years ago

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Answer:

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Step-by-step explanation:

5.08/2 = 2.54

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3 years ago