Answer:
1. 
2. 
3. 
Step-by-step explanation:
The equation of the line that passes trough the points A(14,-1) and B(2,1) is

The y-intercept of this line is

Line BC is perpendicular to line AB, then its slope is
Line BC passes through the point B, so

If the y-coordinate of point C is 13, then x-coordinate is

Answer:
90$ I'm pretty sure
Step-by-step explanation:
25% of 120=30$, 120-30=90$
To find the answer, you must first convert the sales percentage to a decimal by moving the decimal left two places.
20%=0.20
Then, multiply the total cost by the decimal.
$15.98(0.20)=$3.19
This gives us the amount of the discount. To find the remaining cost, we subtract that number from the original cost to get the answer.
$15.98−$3.19=$12.79
An example of explaining percents I found to help explain it better then I probably could do
17 = 5k-2
+2 +2 The first step is to add 2 to both sides
-------------
19 = 5k Then you divide both sides by 5
The answer is 3.8 = k
Hey there, Lets solve this problem together.
Our first step will be to g<span>ather like terms
</span>
<span>
Simplify 5×−2k×k to −5×2k×k
</span>
Simplify <span><span>5×2k×k</span></span><span> to </span><span><span>10<span>k^2
</span></span></span>

<span><span><span>
</span></span></span>
Answer:
see below
Step-by-step explanation:
Any line between two points on the circle is a chord.
Any angle with sides that are chords and with a vertex on the circle is an inscribed angle.
Any angle with sides that are radii and a vertex at the center of the circle is a central angle. Each central angle listed here should be considered a listing of two angles: the angle measured counterclockwise from the first radius and the angle measured clockwise from the first radius.
<h3>1.</h3>
chords: DE, EF
inscribed angles: DEF
central angles: DCF . . . . . note that C is always the vertex of a central angle
<h3>2.</h3>
chords: RS, RT, ST, SU
inscribed angles: SRT, RSU, RST, RTS, TSU
central angles: RCS, RCT, RCU, SCT, SCU, TCU
<h3>3.</h3>
chords: DF, DG, EF, EG
inscribed angles: FDG, FEG, DFE, DGE
central angles: none
<h3>4.</h3>
chords: AE
inscribed angles: none
central angles: ACB, ACD, ACE, BCD, BCE, DCE