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
abruzzese [7]
3 years ago
12

A 15m long ladder reached a window 9m high from the ground on placing it against a wall at a distance x. Find the distance of th

e foot of the ladder from the wall.
Mathematics
1 answer:
Ilya [14]3 years ago
8 0

Answer:

12 meters

Step-by-step explanation:

Given That :

Length of ladder = 15m

Height of wall =. 9 m

Using Pythagoras rule :

Adjacent² = hypotenus² - opposite²

Adjacent² = 15² - 9²

Adjacent² = 225 - 81

Adjacent² = 144

Adjacent = sqrt(144)

Adjacent, x = 12

You might be interested in
PLEASE HELP I GIVE THANKS
drek231 [11]
A, C, And D

Could be these answers...
7 0
3 years ago
The length of a rectangle is 6 inches more than its width. Its area is 91 square inches. The length is .
Vika [28.1K]

Answer:

13 in

Step-by-step explanation:

let w be width then length is w + 6

the area (A) of a rectangle is calculated as

A = length × width , then

A = w(w + 6) = 91 , that is

w² + 6w = 91 ( subtract 91 from both sides )

w² + 6w - 91 = 0 ← in standard quadratic form

(w + 13)(w - 7) = 0 ← in factored form

equate each factor to zero and solve for w

w + 13 = 0 ⇒ w = - 13

w - 7 = 0 ⇒ w = 7

however, w > 0 then w = 7

and length = w + 6 = 7 + 6 = 13 in

8 0
2 years ago
Subtract. 5x^2-5x+1-(2x^2+9x-6)
Talja [164]
<h2>Hello!</h2>

The answer is:

3x^{2} -14x+7

<h2>Why?</h2>

To solve the problem we need to add/subtract like terms. We need to remember that like terms are the terms that share the same variable and the same exponent.

For example, we have:

x^{2} +2x+3x=x^{2} +(2x+3x)=x^{2}+5x

We have that we were able to add just the terms that were sharing the same variable and exponenr (x for this case).

So, we are given the expression:

5x^2-5x+1-(2x^2+9x-6)=5x^{2}-2x^{2}-5x-9x+1-(-6)\\\\(5x^{2}-2x^{2})+(-5x-9x)+(1-(-6))=3x^{2}-14x+7

Hence, the answer is:

3x^{2} -14x+7

Have a nice day!

4 0
3 years ago
Problem solving 123456 to multiplication using all the numbers once
Degger [83]

Answer:

720.

Step-by-step explanation:

1*2*3*4 * 5*6

= 24 * 30

= 720.

Splitting it up in this way makes it easier.

5 0
3 years ago
How to do fractions Equations multiplication and division
anygoal [31]
Add subtraction multiplication and division
6 0
3 years ago
Read 2 more answers
Other questions:
  • Compare the numbers 0.5 and 0.05. how many times 0.05 is 0.5
    14·2 answers
  • Which relations are functions ​
    12·1 answer
  • HELP! Find the missing value for the exponential function represented by the table below.
    8·2 answers
  • Find X when y= -2 <br> Thank you for your help and have a blessed day
    6·2 answers
  • After nine years, the total was $430. After 12 years, the total amount in Sally's savings account was $480.
    5·1 answer
  • Suppose the linear regression line y = 2.009x - 37.131 predicts a pizza
    14·1 answer
  • Math Question,please help​
    14·1 answer
  • Cant seem to find the answer​
    7·2 answers
  • HELP I NEED HELP ASAP
    14·1 answer
  • What are the endpoint coordinates for the midsegment of △BCD that is parallel to BC¯¯¯¯¯?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!