Answer:
Step-by-step explanation:
Id QS bisects angle PQR, then <PQS = <SQR and <PQS+<RQS = <PQR
The formula then becomes
<PQS+<PQS = <PQR
2<PQS = <PQR
<PQS = <PQR/2
Given <PQR = 119°
Substitute into the resulting expression above;
<PQS = <PQR/2
<PQS = 119/2
<PQS = 59.5°
Since <RQS = <PQR, hence <RQS is also 59.5°
The GCF of 21 and 15 is 3. The are no variables in common so the factor =
3(7x -5y)