HElps What is M∠1 =??

m<1 = 145

Step-by-step explanation:

I'm going to name the unkown angle y for clarification

<1 will be x

y + 115 + 30 = 180

y + 145 = 180

y = 35

x + y = 180

x + 35 = 180

x = 145

M angle 1 = 145

Step-by-step explanation:

The measurement of angle one is a combination of all the angles present in the triangle. This means that 115+30 is equal to angle 1

i think the answer is b.

step-by-step explanation:

not 100% sure though.

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