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
Masja [62]
3 years ago
13

If someone can please answer the question in the picture thatd be great

Mathematics
1 answer:
Ann [662]3 years ago
5 0

Answer:

≈ 20.8 ft

Step-by-step explanation:

A right triangle is formed between the wall, the ground and the ladder.

The ladder is the hypotenuse , the wall and ground are the legs.

let h be the height of the wall, then using Pythagoras' identity

h² + 33² = 39²

h² + 1089 = 1521 ( subtract 1089 from both sides )

h² = 432 ( take the square root of both sides )

h = \sqrt{432} ≈ 20.8 ft ( to the nearest tenth )

You might be interested in
A denotes an mn matrix. Determine whether the statement is true or false. Justify your answer. The row space of AT is the same a
ziro4ka [17]

Answer: true

Step-by-step explanation:

For an m*n matrix, the column space of A will be a space formed by the lineal combination of all the columns of A.

column space = a1*c1 + a2*c2 + ...

                       

where a1, a2, ... are scalars, and c1 is the vector of column 1.

Then we should write:

Column space = a1*(A₁₁, A₂₁, A₃₁, ...) + a2*(A₁₂, A₂₂, A₃₂, ...) + ...

Now, the transpose is defined as:

[At]₁₃ = A₃₁

Here i used the element with subindex 3 and 1, but is the same for every subindex.

Notice that if A is m*n, then [At] is n*m

Now, the row space of [At] will be, same as before.

Row space = b1*r1 + b2*r2 + ...

Where b1, b2, ... are scalars and the r's are the vector of each row.

                   = b1*( [At]₁₁ , [At]₁₂, [At]₁₃, ...) + b2*([At]₂₁, [At]₂₂, [At]₂₃, ...) + ...

Now we replace each term of the transpose by the associated element in the original matrix.

                   = b1*( A₁₁, A₂₁, A₃₁, ...) + b2*(A₂₁, A₂₂, ...) + ....

If we take:

b1 = a1, b2 = a2, b3 = a3, ...

We will have that the row space of [At] is the same as the column space of A.

4 0
2 years ago
What is the Coefficient in<br> 1/4 N + 15
olga_2 [115]

Answer:

1/4 N + 15

the coefficient is "n" it is a letter variable associated with a term

Step-by-step explanation:

7 0
3 years ago
suppose the growth of Bermuda grass from germination to lawn-care length is normally distributed with a mean of 20 days with a s
Law Incorporation [45]

I chose D bcuz it the right answer to pick

6 0
3 years ago
What are the factors of 36?
denis23 [38]

Answer:

1, 2, 3, 4, 6, 9, 12, 18, 36

Step-by-step explanation:

3 0
2 years ago
Write an exponential function to model the situation. A population of 470 animals decreases at an annual rate of 12%.
Tamiku [17]
\bf \qquad \textit{Amount for Exponential Decay}&#10;\\\\&#10;A=P(1 - r)^t\qquad &#10;\begin{cases}&#10;A=\textit{accumulated amount}\\&#10;P=\textit{initial amount}\to &470\\&#10;r=rate\to 12\%\to \frac{12}{100}\to &0.12\\&#10;t=\textit{elapsed time}\\&#10;\end{cases}&#10;\\\\\\&#10;A=470(1-0.12)^t\implies A=470(0.88)^t
5 0
3 years ago
Other questions:
  • What is the definition of subtract,this is the hardest question in the WORLD,please help me.
    10·2 answers
  • How many cups equal 372 quarts
    10·2 answers
  • What is the percent of change of 24 songs to 78 songs
    9·1 answer
  • 6/6 as a mixed number
    6·1 answer
  • Winston earns $140.00 by selling 56 hot dogs at a concession stand at school. Using the same rate for the cost of one hot dog, h
    8·1 answer
  • Congruent figure help please :)
    11·1 answer
  • Please help ASAP. Will give brainliest!
    5·1 answer
  • Can someone please help me out? I am noooottt good at these.
    7·2 answers
  • Order at the end and help pls ​
    11·1 answer
  • A swimming pool is shaped like the figure below. Each end is a semicircle, and the length and
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!