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Mnenie [13.5K]
4 years ago
13

A 12-foot ladder is leaning across a fence and is touching a higher wall located 3 feet behind the fence. The ladder makes an an

gle of 60 degrees with the ground. Find the distance from the base of the ladder to the bottom of the fence. Show all of your work.
Mathematics
1 answer:
Svetllana [295]4 years ago
7 0

Answer:

3 feet

Step-by-step explanation:

A 12-foot ladder is leaning across a fence and is touching a higher wall located 3 feet behind the fence. The ladder makes an angle of 60 degrees with the ground.

 ladder is 12 foot

The ladder makes an angle of 60 degrees with the ground.

It form a right angle triangle . ladder is the hypotenuse

cos(60)=\frac{x}{12}

0.5= \frac{x}{12}

multiply 12 on both sides

x= 6

the distance from the base of the ladder to the bottom of the fence

x-3 = 6-3=3 feet

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4) The diameter of a circle is 32m. The radius is represented by 4(x + 2).
vaieri [72.5K]

Answer:

The value of x is 2

Step-by-step explanation:

Diameter = 2r -------------------------------------------------------------------(1)

where r is the radius

The value of the diameter = 32 m   and  radius is given to be 4(x+2)

substitute the above into equation (1)   and then solve for x

32  =  2 [ 4(x + 2)]

first open the inner bracket

32 = 2[4x + 8}

then open the outer bracket

32 = 8x + 16

subtract 16 from both-side of the equation

32 - 16 = 8x +16 - 16

16 = 8x

Divide both-side of the equation by 8

16/8  = 8x/8

2 = x

x = 2

Therefore, the value of x is 2

3 0
3 years ago
A bookcase has two shelves. The top shelf has 10 more than 1/3 the number of books on the bottom shelf. There are 12 books on th
kobusy [5.1K]

Answer: b.14

Step-by-step explanation:

We have two shelves, the top shelf s_{t} and the bottom shelf s_{b}.

Now, firstly we are told the top shelf has 10 more than 1/3 the number of books on the bottom shelf. This can be expressed as:

s_{t}=10+\frac{1}{3}s_{b} (1)

Then, we are told there are 12 books on the bottom shelf:

s_{b}=12 (2)

Substituting (2) in (1):

s_{t}=10+\frac{1}{3}(12) (3)

s_{t}=10+\frac{12}{3} (4)

s_{t}=14 (5) This is the number of books on the top shelf

Hence, the correct option is b.

6 0
3 years ago
The decimal number 0.2 5 is an example of a terminating decimal.<br><br> true false PLEASE ANSWER
frozen [14]

Answer:

true

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which compound inequality best describes the following?
bija089 [108]

Answer:

I think it might be A: 75< x<84

Step-by-step explanation:

but i am not sure

8 0
3 years ago
troy and his sister caitlin can earn money by choosing to do chores around the house . last month caitlin earned $5 more than tw
max2010maxim [7]

Answer:

Lets solve this algebraically

25 is what troy has.

Caitlin has $55

Step-by-step explanation:

x+2x+5=80 3x=75 x=25

8 0
3 years ago
Read 2 more answers
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