(3-1) + (1 - 2) =
what is the answer to this question? i don’t understand it.

1

Step-by-step explanation:

parenthesis tell you to solve whatever is inside first.

Ex. (2+3)-2=(5)-2

In this problem you would solve the (3-1) and (1-2) and you get the equation

(2)+(-1)

Now you can just solve like a normal addition problem. Keep in mind the negative sign in front of the number 1.

2+(-1)=1

This can also be rewritten as 2-1 because we are adding a negative number.

(I kept the parenthesis on the -1 so it would be easier to see)

2

step-by-step explanation:

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.