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Westkost [7]
3 years ago
15

The model below, the anchor of a guy-wire is 16 feet away from the telephone pole. John puts a 5 foot pole under the guy-wire pa

rallel to the telephone pole (see image below).
John knows the distance he put his pole from the anchor, which is labeled X. John says he can use similar triangles to calculate the height of where the guy-wire meets the telephon
ble.
o you agree with John's statement that he can prove similarity if we know side x? Provide mathematical justification.
h
5 ft
16 ft
В І у

Mathematics
1 answer:
beks73 [17]3 years ago
8 0

Answer:

Yes, because the two triangles share common segments.

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PLEASE HELP ASAP WILL MARK BRAINLIEST
luda_lava [24]

Answer:

x=11

Step-by-step explanation:

7x-9-4(x-1)=28

7x-9-4x+4=28

3x-5=28

3x=33

x=11

4 0
3 years ago
Pls help with Trigonometric
Sav [38]

The value of the given trigonometry function is 2√15/15

<h3>Half angles</h3>

Half angles are trigonometric identities used to express sine, cosine and tangent of half angles.

For instance the value of cos theta is expressed as shown below;

cosФ = cos(Ф/2+Ф/2)

cosФ = cos²Ф/2-sin²Ф/2
cosФ = cos²Ф/2-(1-cos²Ф/2)
cosФ  = 1 - 2cos²Ф/2

Given the following parameters

cosФ = -7/15

Substitute

cosФ  = 1 - 2cos²Ф/2

-7/15  = 1 - 2cos²Ф/2

-2cos²Ф/2 = -7/15 - 1

-2cos²Ф/2 = -8/15

cos²Ф/2 = 4/15
cosФ/2 = 2/√15

Rationalize

2/√15 * √15/√15

2√15/15

Hence the value of the given trigonometry function is 2√15/15

Learn more on trigonometry function here: brainly.com/question/2254074

#SPJ1

8 0
1 year ago
-7x+14=4x-19 please help w/ answer
Vladimir79 [104]
The correct answer is x=3. Hope this helps!!
6 0
3 years ago
Read 2 more answers
Value of 8 <br> in 1,283,479
Nutka1998 [239]

Answer:

80,000

Step-by-step explanation:

Since 8 is 4 spaces to the left, it’s in the 10,000’s range, making it 80,000

6 0
2 years ago
Consider the following pair of equations:
Bond [772]
So the equations are: 

y= 3x + 3

y= x- 1

By the transitive property, we know x-1= 3x+3 (Transitive property means if a= b, and b= c, shouldn't a = c if they both equal b?)

so, x- 1= 3x + 3.  Now we isolate x and solve:
        +1          +1
x= 3x+ 4
-x  -x

0 = 2x+ 4
-4        -4

-4 = 2x
/2    /2

x= -2

Now, you can plug that back in to find y:

y = x- 1
y= -2 -1
y= -3

Then plug them both in to make sure it is correct. :o)
6 0
2 years ago
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