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
romanna [79]
3 years ago
9

A painter leans a 20-ft ladder against a building. The base of the ladder is 12 ft from the building. To the nearest foot, how h

igh on the building does the ladder reach?

Mathematics
2 answers:
Mazyrski [523]3 years ago
7 0
Use Pythagorean Theorem.
a^2 + b^2 = c^2
Substitute the numbers.
12^2 + b^2 = 20^2
144 + b^2 = 400
Subtract 144 from each side.
b^2 = 256
Take square root.
The answer is
b = 16
Mekhanik [1.2K]3 years ago
4 0
<h2>Answer:</h2>

The height of the building to which the ladder reaches is:

                            16 ft.

<h2>Step-by-step explanation:</h2>

We can model this problem with the help of a right angled triangle ΔABC such that the hypotenuse of the triangle is 20-ft and one of it's leg is: 12 ft.

Now we are asked to find the other leg of the triangle.

We will use the Pythagorean Theorem in order to find the other leg.

Pythagorean Theorem says that: If c is the hypotenuse of the right triangle and a and b are it's two legs then,

c^2=a^2+b^2

Hence, here we have:

c=20,\ and\ a=12

So,

20^2=12^2+b^2\\\\i.e.\\\\400=144+b^2\\\\i.e.\\\\b^2=400-144\\\\i.e.\\\\b^2=256\\\\i.e.\\\\b=\pm 16

Since, b can't be negative as it denotes a side of a triangle.

Hence, we get:

b=16

You might be interested in
What is the area in square feet of a 100 yard by 60 yard football field
vitfil [10]

Yards=6000

Feet=18000

6 0
3 years ago
I need help on this one
tia_tia [17]
You need to come up with an array of answers for x and y that will be greater than 0.
x+4y>0. example if x is -1 and y is 1 will this be correct.
-1+(4*1)>0, -1+4>0. 3>0? Yes
if x is 1 and y is -1 then the equation becomes 1+(-4)>0 -3 is not>0 so it's not in the array
x could be -3 and y 1
You will plot a line to show all the answers.
i
8 0
3 years ago
Find the zeros of the function. Enter the solutions from least to greatest. f (x)=(x -3)(2x -8)f(x)=(x−3)(2x−8)f, left parenthes
-Dominant- [34]

Answer:

Step-by-step explanation:

The zeros are the values of x for which f(x) = 0.

f(x) = (x-3)(2x-8) = 0

x = 3, 4

7 0
3 years ago
Please give me an answer fast! :(
tekilochka [14]

Answer:

The answer is D

Step-by-step explanation:

If wrong plz correct me if right plz mark brainliest

7 0
3 years ago
in one week, 128 cell phones were sold. The following week 37 more cell phones were sold than the week before. How many cell pho
Pani-rosa [81]

\large\bf{\underline{Given :}}

  • 128 cellphones were sold in a week
  • 37 more cellphones more were sold than the week before

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎\large\bf{⟹128+37=165}

__________________________________________

\large\bf{\underline{Therefore:}}

\bf{Total\: number\:of\: cellphones\:sold\:in\:two\:weeks}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large{⟹128 + 165}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large{⟹293}

__________________________________________

\large\bf{\underline{Hence}}

  • 293 cellphones were sold in given 2 weeks
6 0
2 years ago
Other questions:
  • Write a word problem that involves multiplication and addition. Include extra numerical information
    13·2 answers
  • An urn contains six chips, numbered 1 through 6. two are chosen at random and their numbers are added together. what is the prob
    5·1 answer
  • What is the best method to solve the system of equations? 2x + 3y = 8 4x - 6y = 2?
    6·1 answer
  • Which of these statements about the function is true?
    10·1 answer
  • A regular hexagon has a perimeter of 150 m. Find its area. Leave your answer in the simplest radical form.
    7·1 answer
  • Read the last sentence of "Ain't I a Woman?"
    7·2 answers
  • Solve for y <br><br> 4x + 4y = -36
    8·1 answer
  • I WILL GIVE BRAINLIEST TO CORRECT ANSWER
    6·1 answer
  • Which number is the additive inverse of 47? Hi. SI56 -47 1 W om 04​
    10·1 answer
  • What number is the opposite of 90?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!