Multiply all terms by x and cancel
xx+-15=2x
x^2-15=2x simplify both sides
x^2-15-2x=2x-2x subtract 2x from both sides
x^2-2x-15=0
(x+3)(x-5)=0 factor left side of equation
x+3=0 or x-5=0 set factors equal to 0
x=-3 or x=5
hope this helps!
Answer:
Step-by-step explanation:
Rotation of any point in the form of (x, y) about the origin O through 180 degree in anticlockwise or counterclockwise direction, it will takes the new position (-x, -y)
i.e,
The rule of rotation about the origin through 180 degree is given by:
For example:
Let the point A(-4, 6) rotate by the rule 
then;
⇒the coordinate of image of the point A is, (4, -6)
Therefore, the rule represents is,
RS; RP; RQ; QP
Using RQ^2 = (RS)(RP) <--- That's the length of a secant and chord
to find RQ (You already know the length of RS and RP, because they are labelled, so the only other value that can be found is RQ)
QP (This is the only value that hasn't been found)
(14)(14+12) = RQ^2 -->
14(26) = RQ^2 -->
2sqrt(7*13) = RQ
QP = sqrt(26^2 - 364) = sqrt(676-364) = 2sqrt(78)
Triangle ABC is a right triangle, so you can use the Pythagorean Theorem to find diameter AC. 6^2 + 8^2 = x^2. Solve for x to get x = 10. The circumference equation is pi * d, where d is the diameter. So, the answer is 10 pi.
Answer:
5 units. Since they have the same y coordinate the x coordinate determines the distance from each other. In the case 9-4=5.
