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
iogann1982 [59]
3 years ago
9

Using a compass and straight edge, construct a tangent line to a circle from a given exterior point. Evidence of your constructi

on must be shown to earn credit.

Mathematics
1 answer:
AleksAgata [21]3 years ago
6 0
In the figure attached, red circle A and red point B are the circle and external point of interest. Note that we must know where the center of circle A is. If we don't know that, there are construction techniques for finding it, but that is beyond the scope of this answer.

Step 1. Set your compass to a radius greater than half the length of segment AB. Here, we have made the radius AD.

Step 2. Draw arcs above and below the center of segment AB centered at A and B using the radius of Step 1. Here the "arc" is shown a a full (green) circle. Only the points where the arcs intersect (E and F) are of interest, so it is not necessary to draw the full circle.

Step 3. Identify the points of interesection (E and F) of the arcs of Step 2, then draw a line segment between them. This segment (EF) is the perpendicular bisector of AB. Mark point G where it intersects segment AB. As with the green circles, it is not necessary to draw the whole line EF, since we are only interested in the location of the midpoint of AB, which is point G.

Step 4. Using G as the center, and GA or GB as the radius, draw semicircle AHB. The point of intersection H is the only part of that (blue) circle of interest, so it is not necessary to draw the whole thing.

Step 5. Finish the consruction by drawing tangent line BH.

You might be interested in
Which relation is a function? (look at image below)
Dimas [21]

Answer:

Bottom Right Graph (Absolute Value)

General Formulas and Concepts:

  • Vertical Line Test

Step-by-step explanation:

When we apply the VLT to the 4 different graphs, we see that the only graph that actually passes the VLT is the absolute value graph. Therefore, that is our answer (none of the other graphs pass the VLT).

5 0
2 years ago
A jewelry supply shop buys silver chains from a manufacturer for C dollars each,and then sells the chains at a 40% markup . Writ
alexandr402 [8]
Answer: f(x)= .40c

If c equals 3 lets:
Substitute C for 3 

.40(3) = retail price per each silver 
5 0
3 years ago
What is the area of a sector with radius 6" and measure of arc equal to 120°?
fenix001 [56]
The area of a sector = 0.5 * radius^2 * central angle measure (in radians)

So that:

Area_{sector}=  \frac{1}{2} * 6^2* \frac{120}{180}*\pi=12\pi=37.69911
\\
Area_{sector}=37.7 sq in

7 0
2 years ago
What is the value of y in the equation 5x + 2y = 20, when x = 0. 3 A) 2.5 B) 2.8 C) 9.25 D) 10.75
NemiM [27]
// Plug x into the equation

5(0.3)+2y=20
1.5+2y=20

// Subtract 1.5 from each side

2y=18.5

//Divide each side by 2

y=9.25 (C)
5 0
3 years ago
If the pattern shown continues how many black keys appear on an organ with a total of 240 keys
andre [41]
240 is probably multiplied some other number if theres another number on there to multiply or divide by.

6 0
3 years ago
Other questions:
  • What is 7-3x=2x-7-5x?
    15·2 answers
  • In which of these figures appear to contain a set of lines that is neither parallel nor perpendicular?​
    10·1 answer
  • At a time denoted as t = 0 a technological innovation is introduced into a community that has a fixed population of n people.
    6·1 answer
  • Ushma and her friends went to a movie that started at 7:35 PM the movie ended at 9:20 AM How long was the movie in hours and min
    11·2 answers
  • Justin had 30 pictures got 2 new pictures each week. David had 20 pictures he decided to get 3 more pictures each week. Who has
    9·2 answers
  • Need helppppp I’m stuckkkk
    11·2 answers
  • Nobody has helped me all day and I really need this answer please. Will mark brainliest. Find the length of AB.
    13·1 answer
  • Can you answer that but simply make it look it easy
    7·1 answer
  • Ofc my day is going bad its monday ugh :(
    12·2 answers
  • Can someone plz help me with this question
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!