Hello,
Assume v the speed of the eastbound train,
v-14 the speed of the westbound train
v*4+(v-14)*4=800
==>8v=800+56
==>v=107 (mi/h)
Speed of the westbound train: 107-14=93 (mi/h)
Answer:
Total amount spread on electricity in three months is $784.98.
Step-by-step explanation:
Tan's electricity bill for the month of August was $267.00.
It is given that the September bill showed a 2% increase from his August bill.
Increase in electricity bill is 2% of $267.00.
The electricity bill for the month of September is
It is given that in October, his bill decreased 8% from the amount he was billed in August.
decrease in electricity bill is 8% of $267.00.
The electricity bill for the month of October is
Total amount spread on electricity is
Therefore total amount spread on electricity in three months is $784.98.
Standard deviations, σ, is generally preferred over range. Reason being, it is calculated from all the data and when there is outliers it will not be impacted as much as the range. It is great to not also that, The IQR is preferred to the standard deviation when the distribution is very highly skewed or when there are severe outliers, because the IQR is less sensitive to this features than standard deviation.
Answer: Danny's supermarket
Step-by-step explanation:
Danny's price- 0.75x1.5= $1.12 for 1 liter water bottle
Marta's price- $1.50 for 1.25 liter water bottle
1.12x1.25=1.40, if Danny was selling a 25% bigger bottle(making the bottle size equal to Marta's) it would cost $1.40, the lower price
