What must be the length of zy in order for zy to be tangent to circle x at point y? 14 units 15 units 16 units 17 units

answer:

15

step-by-step explanation:

answer: second option

step-by-step explanation:

remember the following theorem: "the tangent of a circle is perpendicular to the radius through the point of contact".

then, if the radius is perpendicular to the tangent, the angle formed measures 90° degrees. therefore, the triangle shown in the figure is a right triangle.

knowing this, you can appply the pythagorean theorem to calculate the lenght zy:

where "a" is the hypotenuse and "b" and "c" are the legs of the right triangle.

in this case:

then you need to substitute values:

and finally you must solve for zy:

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it