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2 years ago

What is 25= n+20 ?????will mark brainliest

Mathematics

2 answers:

77julia77 [94]2 years ago

6 0

Answer:

n = 5

Step-by-step explanation:

5 + 20 = 25

therefore n = 5

Oksi-84 [34.3K]2 years ago

5 0

Answer:

n=20-25

n=-5

Step-by-step explanation:

plz Mark my answer in brainlist

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Find the surface area!!!<br>HELP ME PLZZZ<br>

morpeh [17]

Answer:

add up all the sides and angles then divide by the radius to get the square centimeters and it will lead to the surface area which is 14

Step-by-step explanation:

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3 years ago

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On a particular day, the wind added 4 miles per hour to Alfonso's rate when he was cycling with the wind and subtracted 4 miles

german

On a particular day, the wind added 4 miles per hour to Alfonso's rate when he was cycling with the wind and subtracted 4 miles per hour from his rate on his return trip. Alfonso found that in the same amount of time he could cycle 57 miles with the wind, he could go only 33 miles against the wind.What is his normal bicycling speed with no wind?

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3 years ago

If you subtract 8 from 7 times a certain number, you end up with 34. what is the number?

Mkey [24]

If we call the unknown number x, we have:

7 times a certain number is $7x$
If we subtract 8, we have $7x-8$

If this equals 34, we have

$7x-8=34$

Add 8 to both sides:

$7x=42$

Divide both sides by 7:

$x=6$

8 0

3 years ago

23 POINTS AND WILL GET BRAINLIEST!!

Phoenix [80]

The difference in percentage of youngest and oldest age groups is 15.4%

<h3>The percentage from 11 to 20</h3>

Start by calculating the total number of people, as follows

People = 102 + 36 + 66 + 150 + 78 + 60 + 90 + 11 + 9

Evaluate

People = 602

The number of people in the age group 11 to 20 is:

Group = 36

So, the percentage is

Percentage = 36/602

Percentage = 6.0%

Hence, the percentage from 11 to 20 is 6.0%

<h3>The percentage from 31 to 40</h3>

The number of people in the age group 31 to 40 is:

Group = 150

So, the percentage is

Percentage = 150/602

Percentage = 24.9%

Hence, the percentage from 31 to 40 is 24.9%

<h3>The percentage from 71 to 80</h3>

The number of people in the age group 71 to 80 is:

Group = 11

So, the percentage is

Percentage = 11/602

Percentage = 1.8%

Hence, the percentage from 71 to 80 is 1.8%

<h3>The lowest percentage</h3>

This is the percentage of age group 81 to 90

And, the percentage is

Percentage = 9/602

Percentage = 1.5%

Hence, the lowest percentage on the chart is 5%

<h3>The percentage from 51 to 60 and 61 - 70 combined</h3>

The number of people in the age group 31 to 70 is:

Group = 60 + 90 = 15-

So, the percentage is

Percentage = 150/602

Percentage = 24.9%

Hence, the percentage from 51 to 60 and 61 - 70 combined is 24.9%

<h3>The difference in percentage of youngest and oldest</h3>

The youngest is 0 to 10 and the oldest is 81 to 90.

The number of people in these age groups are:

Youngest = 102

Oldest = 9

The difference is

Difference = 102 - 9

Difference = 93

So, the percentage is

Percentage = 93/602

Percentage = 15.4%

Hence, the difference in percentage of youngest and oldest is 15.4%