Answer:
28
Step-by-step explanation:
you would divide 42 by 6 which is 7 and than multiply 7 by 4 which would get you 28
Answer:
Step-by-step explanation:
Express this time interval in set notation:
15 ≤ t ≤ 20
This says that the waiting time will be between 15 and 20 minutes.
Answer:
σ =2√2 .....
Step-by-step explanation:
Lets find the mean first
mean = 2+4+6+8+10/5
m = 30/5
m = 6
σ =√1/5[(2-6)²+(4-6)²+(6-6)²+(8-6)²+(10-6)²]
σ = √1/5[(-4)²+(-2)²+(0)²+(2)²+(4)²]
σ=√1/5[(16+4+0+4+16)]
σ = √1/5(40)
σ = √8
Take the square root of 8.
σ =2√2 .....
Step-by-step explanation:
sum of all interior angles of hexagon=720°
(x+70)°+x°+(2x)°+(2x)°+(2x-10)°+(x+30)°=720°
9x+90=720°
9x=720-90
9x=630
x=70
Steps to solve:
15 = x + 13
~Subtract 13 to both sides
2 = x
Best of Luck!