343 divided by 7 is 49
There are 49 groups of 7 in 343
The answer is 49
Answer:
Step-by-step explanation:
volume of concrete=162×12×4/12=648 ft³
Focus on the triangle PQN and triangle SQP, prove that they are similar:
PQ=PR, PN is the altitude, so QN=NR=9
PQ of ΔSQP:QN=15:9=5:3
PS:PN=20:12=5:3
∠PQN=∠SQP (they are the same angle, reflexive property)
therefore, according to the SAS similarity theorem, ΔPQN is similar to ΔSQP
∠PNQ=∠SPQ =90 degree
therefore, QPS is a right angle.
you may have to reword it depending on what your teacher requires, column proof or paragraph proof.
I'll try to help
It is a bisector so the two equations with Y are congruent
3y+6=5y-18
2y=24
y=12
Hope I did it right...