Answer:
Wait can you explain it better?
Step-by-step explanation:
Answer:
90
Step-by-step explanation:
3 hours = 180 mins
180 ÷ 45 = 4. so Ellie will drive 4x more miles in 3 hours.
22.5 × 4 = 90
Answer:
x = 10
Step-by-step explanation:
25x + 10 = 260
=> 25x = 250
=> x = 10
Hoped this helped.
Answer:
yes it is right but you might want to make it neater
Step-by-step explanation:
:)
Step-by-step explanation:
Margin of error = critical value × standard error
ME = CV × SE
At 95% confidence and 20 degrees of freedom, CV = 2.086.
SE = s / √n
SE = 0.16 / √21
SE = 0.035
So the margin of error is:
ME = 2.086 × 0.035
ME = 0.073