Answer:



Step-by-step explanation:
Hello there!
<u>Algebra 1</u>
The first thing we should find is the missing angle
Because this is a right triangle we can solve it using the Pythagorean Theorem
The Pythagorean theorem states that the sum of the two legs squared equal the hypotenuse squared
the formula...
where a and b = legs and c = hypotenuse
we are given two legs so we plug in a and b and solve for c

so we can conclude that the missing side length ( or z) equals 25
now to solve for the angles
<u>Trigonometry</u>
We can solve for y using sin
sin = opposite side divided by the hypotenuse
the opposite of y is 7 and the hypotenuse is 25
so we set up an equation 
now we solve for y

then we round to the nearest hundredth
so we can conclude that angle labeled y = 16.26
<u>basic geometry</u>
Remember all of the angles in a triangle add up to equal 180 so we can find x by subtract the known angles from 180
180 - 90 - 16.26 = 73.74 so we can conclude that x = 73.74
The sum of the exterior angles of the triangle is 360
The sum of the exterior angles of the quadrilateral is also 360
The sum of the exterior angles of the pentagon is again 360
Each of the shapes has an exterior angle sum of 360
Answer:
center b and scale 3 is the correct option
B, y goes up 8, when you add 8 to y