Plz help answer algebra2

x=55°, y=35°, z=145°

Step-by-step explanation:

y is vertically opposite to 35, meaning they share the same value.

We can see that x and y add to 90, as together they take up the space as the angle with the box (a symbol for 90°). This means x+y=90, and x=90-y, which can be written as x=90-35 when subbing y with its known value. This solves to x=55.

z and 35 together form a straight line, meaning z+35=180, or z=180-35. This can be solved to z=145.

**This content involves working out values of angles, which you may wish to revise. I'm always happy to help!

(x,y,z) = (55,35,145)

Step-by-step explanation:

the angle of a straight line is 180 degrees. We can see that we have a right angle (90 degrees) and 35 degrees. So x must be 180-35-90=55

since the line on the the left if perpandicular with the line going up x and y must add to form a right angle (90 degrees). therefore y = 90-x=35.

finally, z is in a similar situation to x where the angle of the line is 180. We know y so z = 180-y =145

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116