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zlopas [31]
3 years ago
9

A scale on a map shows that 3 centimeters represents 10 kilometers. What number of centimeters on the map represents an actual d

istance of 25 kilometers?
Mathematics
2 answers:
ExtremeBDS [4]3 years ago
7 0
Scale: 3cm=10km
3:10 or 3/10

3cm/10km=x/25km

x=25x3/10
=7.5cm

7.5cm represents an actual distance of 25km.
Ludmilka [50]3 years ago
3 0

Answer:6.5 centimeters

Step-by-step explanation:10 kilo + 10 kilo + 5 kilo

Should give you 6.5 centimeters if 10 is 3 centimeters

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The rate of change of the number of students at a high school in Naples is the same from 2005 to 2013 as it is from 2013 to 2021
german

Answer:

Step-by-step explanation:

Linear

6 0
2 years ago
Irene's mean score on 5 tests is 88%. What is
Anestetic [448]

Answer: The least score she can get on her next test is 455 points.

Step-by-step explanation: From the available information, her current mean score is 88%, and that was achieved from a total of 5 tests. Hence, her mean score was computed as follows;

Mean = (Summation of data)/observed data

Where the observed data is 5 and the mean is 88. Therefore the mean can now be expressed as,

88 = Summation of data/5

By cross multiplication we now have

88 x 5 = Summation of data

440 = Summation of data.

So, if she wants to raise her mean score on her next test to 91%, her least possible score would be derived as

91 = (Summation of data)/5

By cross multiplication we now have

91 x5 = Summation of data

455 = Summation of data

Therefore, on her next test, she must score at least 455 points.

4 0
3 years ago
The Chens bought their house for $240 000 twenty years ago. They just sold the house
serg [7]

The percent is the new value of the house of the price they paid 20 years ago is 216.67%.

<h3>Percentage</h3>

  • Old price = $240 000
  • New price = $520 000

percent is the new value of the house = New price / Old price

= 520,000 / 240,000 × 100

= 2.16666666666666

= 216.666666666666%

Approximately,

percent is the new value of the house = 216.67%

Therefore, the percent is the new value of the house of the price they paid 20 years ago is 216.67%.

Learn more about percentage:

brainly.com/question/843074

#SPJ1

5 0
1 year ago
A tourist drives 70 miles along a scenic highway and then takes a 7-mile walk along a hiking trail. The average velocity driving
san4es73 [151]

Answer: T=\frac{17}{x}

Step-by-step explanation:

The formula we need to use is:

time=\frac{distance}{velocity}

We know that "T" is the total time for driving and hiking and "x" is the average velocity on the hike.

Knowing that the tourist drives 70 miles along the scenic highway and walk 7-mile walk along the hiking trail, and also knowing that the average velocity driving is 7 times that while hiking, we can conclude that  the total time is:

T=\frac{70}{7x}+\frac{7}{x}

Finally, simplifying the equation, we get that  the total time for driving and hiking as a function of the average velocity on the hike, is:

T=\frac{10}{x}+\frac{7}{x}\\\\T=\frac{10+7}{x} \\\\T=\frac{17}{x}

8 0
3 years ago
Allison has 3 containers with 25 crayons in each. She also has 4 boxes of markers with 12 markers in each box. She gives 10 cray
worty [1.4K]
I hope you'll save some homework for yourself, but I'll help you with this one, too. If one container of crayons has 25 crayons, multiply that by three to get 75 crayons. The marker information is useless in this equation, it's only to confuse you.  Anyways, because that Allison gives away 10 crayons, we need to take 10 crayons away from 75 to get 65. So, your total answer is 65 crayons. I hope this helped! :)
7 0
3 years ago
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