Can somebody help me on this and if so please answer correctly

A 25-foot ladder is placed against a building. The bottom of the ladder is 7 feet from the building. If the top of the ladder sl

algol [13]

Answer:

As per the statement:

A 25-foot ladder is placed against a building. The bottom of the ladder is 7 feet from the building.

⇒Length of the ladder against a building = 25 foot

and Length of the bottom of the ladder from the building= 7 feet.

You had Before the slip.

Let x be the height of the building where ladder hits the building

By Pythagoras theorem:

$\text{Hypotenuse side}^2=\text{Perpendicular}^2+\text{Base}^2$

Here, Perpendicular side = Height of the building = x , Base = Length of the bottom of the ladder from the building = 7 foot and Hypotenuse side = 25 foot

Substitute the value to solve for x;

$25^2=x^2+7^2$

$625=x^2+49$

or

$x^2 = 625-49 = 576$

$x = \sqrt{576} = 24$ foot.

⇒Height of the building = 24 foot

Now, if the ladder slips down 4 feet.

You had after slip

⇒Now, the height of the building becomes = 24-4 = 20 foot.

Let y be the distance from the building wall

then by Pythagoras theorem;

$y^2+20^2 = 25^2$

$y^2+400 =625$

$y^2 = 625-400 = 225$

$y=\sqrt{225} = 15$ foot.

We have to find how many feet will the bottom slide out.

Since, Originally the distance of the bottom from the building = 7 foot

And now, the distance is = 15 foot.

The bottom slide out will be = 15 - 7 =8 foot

Therefore, 8 feet will the bottom slide out

6 0

3 years ago

Trigonometry Special Right Triangles Find the exact value of tan 0* + cos 90* - sin 0*.

Margarita [4]

Answer:

0

Step-by-step explanation:

tan(0) = 0

cos(90) = 0

sin(0) = 0

0 + 0 - 0 = 0

6 0

3 years ago

Please help with this!!

lozanna [386]

Answer:

#1.---60% #2.---$12.60 per hour

Step-by-step explanation:

#1. Since It was originally $50 you have 50% already, so what I did was I multiplied 50 by 2. this got me 100 which is a simpler way to calculate by. 50 to 80 dollars is a $30 change, so multiply that by 2 and you get 60. 60 will be your percent of change. You can double check this by multiplying 50 by .60, the answer will be 30 and 50+30=80

#2 Since Tyler starts off with $12 per hour with a 5% increase you will need to multiply 12*.05 this will get you the answer of 0.6 you then need to add $12, since that was his original payment. 12+0.6=12.60, so his final payment would by $12.60 per hour

5 0

3 years ago

A thermometer shows a temperature of Negative 20 and three-fourths degrees. A chemist recorded this temperature in her notebook

fredd [130]

Answer:

The answer is C.

Step-by-step explanation:

3/4 is equal to 0.75. If you combine 0.75 with -20, then it is 20.75.

4 0

3 years ago

Read 2 more answers

Which expression is equivalent to 10√5 A. √500 B.√105 C.√50 D.√15

julsineya [31]

50 is the answer to this question

3 0

3 years ago

Can somebody help me on this and if so please answer correctly​

Can somebody help me on this and if so please answer correctly