1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Schach [20]
3 years ago
7

The length of a bridge on a map is 1.5 cm. What is the actual length of the bridge in meters if the map is drawn at a scale of 1

:40,000
Mathematics
1 answer:
Vitek1552 [10]3 years ago
6 0

Answer:

The actual length of the bridge is 600 meters

Step-by-step explanation:

we know that

The scale on a map is

\frac{1}{40,000}

That means

1 unit on a map represent 40,000 units in the actual

1 cm on a map represent 40,000 cm in the actual

Remember that

1/ m=100/ cm

so

40,000\ cm=40,000/100=400\ m

we can rewrite the scale as

\frac{1}{400}\frac{cm}{m}

using proportion

Find out the actual length of the bridge in meters if the length of a bridge on a map is 1.5 cm.

Let

x ----> the the actual length of the bridge in meters

\frac{1}{400}\frac{cm}{m}=\frac{1.5}{x}\frac{cm}{m}\\\\x=400(1.5)\\\\x=600\ m

You might be interested in
Is (-2,-3) a solution of the graphed system of inequalities?
makkiz [27]
No. A solution is any co ordinated that lies in the blank space on the graph. (-2,-3) is in the blue shades section so it is not a solution.
4 0
3 years ago
Twenty-five members of the eighth grade class at Park Center Middle School are going to a museum and then to lunch. Each student
Damm [24]
There are two costs involved:

1) the cost for lunch, which is given as a rate per student: $7.25/student

2) the cost for the trip which is $443.75 to be divided by the 25 students, so it is $443.75 / 25 = $17.75/student

Now, you can add up those two costs per student to have the total cost per student:

$7.25 + $17.75 = $25.00/student

Answer: $25.00
5 0
3 years ago
Read 2 more answers
An economist conducted a study of the possible association between weekly income and weekly grocery expenditures. The particular
kolezko [41]

Answer:

42.1% of variation in the response is explained by the regression line

Step-by-step explanation:

Correlation coefficient is a measure which tells us that how strongly are two variables under study are linearly related to each other i.e correlation coefficient gives the strength of linear association between the variables.

If the magnitude of correlation coefficient is closer to 1, it indicates a strong linear relationship. If the magnitude of correlation coefficient is closer to 0, it indicates a weak linear relationship.

There is another variable known as "Coefficient of Determination", which is equal to square of Correlation Coefficient. Coefficient of Determination tells us that what percentage of variation in the response of the study can be explained by the regression line.

This means, for this question we need to calculate the Coefficient of Determination.

Correlation coefficient = r = 0.649

Coefficient of Determination = R = r² = (0.649)²= 0.421 = 42.1 %

This means that 42.1% of variation in the response is explained by the regression line.

5 0
3 years ago
Please please please help me show your work (10 points!!)
Shkiper50 [21]

Answer:

C or 8

Step-by-step explanation:

Once again, first you ant to simplify the equation before putting in the numbers.  So the simplified equation is mh + mp -p/h +m. Then you put the numbers in. mh is actually 3(-1), which is -3. mp is really 3*4, which is 12. p/h is 4/-1, which is -4, and then you add m. So when you put the numbers is it ends up as -3 + 12 - 4 +3, which simplified is 8, or C

8 0
3 years ago
Read 2 more answers
11. In circle H, if m3DHG = (11x - 36)* and m3GHF = (x + 12), find mDG.
Crazy boy [7]

Answer:

B. 187

Step-by-step explanation:

I think this is correct I took a test on this before

3 0
3 years ago
Read 2 more answers
Other questions:
  • Help solve this picture
    9·1 answer
  • A line that contains the point (2,-3) and has a slope of 8
    12·2 answers
  • You have 4 apples and you add 5 more apples how many apples do you have.
    8·1 answer
  • Chaney is spending the day by selling candy bars for $5 a piece . He spent $13 on supplies. He ended the day with $32, how many
    7·2 answers
  • Question 11: Given f (x), what is f (-4.5)?<br><br><img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%28x%20-%201%29%20" id="Te
    5·1 answer
  • If 10 cakes cost $30 then, what would be the cost of 25 cakes? Please help
    6·2 answers
  • Can i get help plz its not hard
    6·1 answer
  • The ratio of boys and girls riding the bus is 4:3 if there are a total of 56 students on the bus,how many girls are on the bus
    8·1 answer
  • Solve for brainiest; thanks in advance
    13·1 answer
  • Pleas I really need help with this all I need is the answer
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!