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
elixir [45]
3 years ago
11

#13. A lighthouse casts a 128-foot shadow. A nearby lamppost that measures 5 feet 3

Mathematics
1 answer:
Ad libitum [116K]3 years ago
7 0

Answer:84

Step-by-step explanation:Using proportions, it is found that the height of the lighthouse is of 84 ft.

This question is solved by proportions, using a rule of three.

For a height of 5.25 feet, the shadow is of 8 feet. What is the height when the shadow is of 128 feet?

The rule of three is:

5.25 feet - 8 feet

x feet - 128 feet

Applying cross multiplication:

The height of the lighthouse is of 84 ft.

credit:joaobezerra

please rate and thanks

You might be interested in
Rule and missing number what would it be
Maurinko [17]
The rule is: MULTIPLY BY 8 because it is true for every term 

13 × 8 =104
22 × 8 = 176
44 × 8 = 352

So, 36 × 8 = 288
6 0
3 years ago
Read 2 more answers
Do parallel rays have to be coplanar?
Vikki [24]
No I belive they don’t have to be
5 0
4 years ago
Greg thinks of a number, multiplies it by 3, subtracts 5 and then multiplies by 2. His answer is 26. What number did Greg think
soldi70 [24.7K]

Answer:

x

3x

3x-5

2(3x-5)

so

2(3x-5)=26

3x-5=13

3x=18

x=6

he thought of 6

8 0
2 years ago
The author of a book was told that he would have to cut the number of pages by 17% for the book to sell at a popular price and s
Ber [7]

Answer:

83%

Step-by-step explanation:

100% - 17% = 83%

Cutting the number of pages by 17% leaves 83% of the original number of pages.

5 0
3 years ago
The rational number -33 is equal
-Dominant- [34]

Answer:

-33

Step-by-step explanation:

The rational number -33 is equal to -33

3 0
3 years ago
Other questions:
  • Tamika makes a 5.5% commision selling electronics how much commission doesshe make if she sells a flat screen for 10000
    6·1 answer
  • organizer for a local race plan to provide 4 water bottles for eah runner. 328 people have signed up to run in the race which of
    6·1 answer
  • After an exercise, Ali and Ben measured their heart rates. The ratio of their heart rates was 15:17 Bens heart beats 18 times pe
    12·1 answer
  • Multiply: (3x + 7)(5x2 − 3x + 6)
    11·1 answer
  • A 20-foot flagpole casts a 6-foot Shadow how tall is a nearby building that casts a 30-foot shadow
    5·2 answers
  • A pack of cardinal flower seeds costs $4, and a pack of petunia flower seeds costs $2.50. You buy the same number of packs of ea
    6·1 answer
  • What is the sum (2/5x+5/8) (1/5x-1/4)?
    12·2 answers
  • Subtracting fractions with unlike denominators
    14·1 answer
  • Assume the acceleration of the object is a(t) = −9.8 meters per second per second (Neglect air resistance.) A baseball is thrown
    13·1 answer
  • A radioactive substance decays from 90 mg to 12.6 mg in 29 years according to the exponential decay model y=ae−bx , where a is t
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!