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
lozanna [386]
3 years ago
14

A 15-foot ladder is leaning against a 30-foot wall. The bottom end of the ladder is 9 feet from the wall. How many feet above th

e ground does the ladder touch the wall?
Can you help me break it down it's been a while please thanks.

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0
Applying Pythagoras theorum to the situation ;

\alpha ^2 +  \beta ^2 = C^2 \\ \\ 9^2 +  \beta ^2 = 15^2 \\ \\ 81 +  \beta ^2 = 225 \\ \\ =>  \beta ^2 = 144 \\ \\ =>  \beta = 12 cm

Thus, the answer is 12 ft.
lana [24]3 years ago
6 0
The answer is 12 feet tall... look at pic

You might be interested in
____ x 11 = 13 x (8 x 11)
Ann [662]

Answer:

(13 x 8) x 11 = 13 x (8 x 11)

Step-by-step explanation:

Using the Associative Property

8 0
3 years ago
A flower bed has a perimeter of 144 inches. Wjat is the largest possible area for the flower bed?
Vadim26 [7]
The answer I is 60 feet for this one.
3 0
3 years ago
Read 2 more answers
If point OR=20 and PR=5, would OP=15?
mina [271]

Answer:

No

Step-by-step explanation:

If OR = 20,

PR = 5

<u><em>OP would be</em></u>:

=> 20+5

=> 25

3 0
3 years ago
Will give brainliest if right help plssss
zheka24 [161]

Answer:

B :)

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Find the value of k for which the line y = kx + 6 is a tangent to the curve x^2 + y^2 – 10x + 8y = 84
guajiro [1.7K]

Answer:

k = 1/2

Step-by-step explanation:

input y = kx +6 into the equation of the curve x² + y² – 10x + 8y = 84

x² + (kx + 6)² - 10x + 8(kx + 6) = 84

expand:

x² + k²x² + 12kx + 36 - 10x + 8kx + 48 = 84

simplify by collecting like terms:

x² + k²x² + 20kx - 10x + 84 = 84

subtract 84 on both sides to bring it to the left:

x² + k²x² + 20kx - 10x + 84 - 84 = 0

x² + k²x² + 20kx - 10x = 0

factorise out x:

x²(1 + k²) + x(20k - 10) = 0

using the discriminant b² - 4ac where b is 20k - 10, a is 1 + k² and c is 0, substitute them in the formula b² - 4ac:

b² - 4ac

(20k - 10)² - 4(1 + k²)(0) = 0

the part highlighted in bold is gone because it's all multiplied by 0, so we are left with (20k - 10)² = 0

(20k - 10)² is the same as

(20k - 10)(20k - 10)

equate both to 0

20k - 10 = 0 and 20k - 10 = 0

add 10 on both sides

20k = 10 and 20k = 10

divide 20 on both sides

k = 10/20 and k = 10/20 which are both the same

10/20 is simplified to 1/2

k = 1/2

5 0
2 years ago
Other questions:
  • 85/100 = x/80. What is the unknown quantity?
    15·2 answers
  • Solve the inequality 2x-5&gt;7
    5·2 answers
  • Gary rode his bike for 5 hrs at 14 mph and then rode back at 35 mph how long did the trip take?
    12·1 answer
  • Help me please if you can!!
    14·1 answer
  • the original price for a Jacket is $79.95 the sale price for the sane jacket is $62.79, if you have 59.20, in your pocket how mu
    6·1 answer
  • A2-12a+32÷a-4 pls guys ans fast<br>​
    15·1 answer
  • Help meeeeeeeeeeeeeeee
    6·1 answer
  • What would it be tho 300 doesn’t show up in my options my options are <br> 1/49 -1/49 -49 and 49
    5·1 answer
  • Pls help me out<br> 6x + 12x = 90
    11·2 answers
  • 1, 3/5, 9/25<br><br> Find the 8th term.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!