C I think I hope it helps
Answer:
Step-by-step explanation:
From the diagram;
PQ+QS = PS.... 1 and
RS+ST = RT..... 2
From the qauestion we are told that PS = RT, PQ = ST
substitute this into both equationn1, it will become
ST+QS = RT.... 2
Subtract equation 3 from 2;
RS-QS +(ST-SST) = RT-RT
RS-QS+0 = 0
RS-QS = 0
add QS to both sides
RS-QS+QS = 0+QS
RS - 0 = QS
RS = QS (Proved)
Answer:
Yes
Step-by-step explanation:
None of the x's repeat
Answer:
(1) The sample mean of the offers is 70.0
(2) The sample variance of the offers is 68
Step-by-step explanation:
(1) Sample mean = summation of offers ÷ number of offers = (64+72+66+58+78+82) ÷ 6 = 420 ÷ 6 = 70.0 (to one decimal place)
(2) Sample variance = summation (offers - sample mean)^2 ÷ number of offers = [(64-70)^2 + (72-70)^2 + (66-70)^2 + (58-70)^2 + (78-70)^2 + (82-70)^2] ÷ 6 = (36+4+16+144+64+144) ÷ 6 = 408 ÷ 6 = 68
This is because the lines make it opposite. So the opposite of -11 is 11.
Let me know if this helps!