5. Seven more than three times a number is twenty-five.

Mathematics

2 answers:

yanalaym [24]3 years ago

7 0

Answer:

let the number be x

then, 3x + 7= 25

3x=18

x=6 so number is 6 and ewiation is 3x+7=25

harkovskaia [24]3 years ago

6 0

Answer:

The number is 6

Step-by-step explanation:

Let x be the number

3x+7 = 25

Subtract 7 from each side

3x+7-7= 25-7

3x = 18

Divide by 3

3x/3 =18/3

x=6

You might be interested in

The U.S. Census Bureau conducts annual surveys to obtain information on the percentage of the voting-age population that is regi

Digiron [165]

Answer:

Yes. We can conclude that the percentage of the employed workers (p1), who have registered to vote, exceeds the percentage of unemployed workers (p2), who have registered to vote.

Step-by-step explanation:

Number of employed persons in the sample = 700

Number of unemployed person in the sample = 300

Number of employed persons who have registered to vote (p1) = 500

Number of unemployed persons who have registered to vote (p2) = 200

Proportion of registered voters who are employed = 500/700 = 71.4%

Proportion of registered voters who are unemployed = 200/700 = 28.6%

This implies that the percentage of registered voters who are employed is more than the percentage of registered voters who are employed. 71.4% (500/700) of the employed registered to vote as against 66.7% (200/300) of the unemployed who registered to vote.

We can conclude that of the 700 registered voters in the sample, 71.4% (500/700) are employed while 28.6% (200/700) are unemployed.

Therefore, the percentage of the employed workers (p1), who have registered to vote, exceeds the percentage of unemployed workers (p2), who have registered to vote.

7 0

3 years ago

In 1990, 23.8% of 18-24 year-olds in Biddeford, Maine were attending college. About 10 years later, a random sample of 610 18-24

Vlada [557]

Answer:

There is enough evidence to support the claim that the percentage of residents attending college in that age-group is greater than 23.8%

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 610

p = 23.8% = 0.238

Alpha, α = 0.01

Number of 18-24 year-old attending college , x = 178