2.5*60 = 150 if bust travel at 60 mile per hrs his friend live 150 miles far
2.5* 63=157.5 . if bus travel 63 miles per hours friend live 157.5 miles away
Answer:
i think r would be the same as q
Step-by-step explanation:
I believe it's an isosceles triangle, if there were a line going down the center, each half should be symmetrical, so q and r are the same angle.
Answer: x=32
Exclamation:
-3x\4+25=1/8x-3
-3/4x+25=x/8-3
-6x+200=x-24
200=x-24+6x
200=7x-24
200+24=7x
224=7x
224/7=32
Answer: a. 170 b. 752
Step-by-step explanation:
The formula to find the sample size is given by :-
, where p is the prior estimate of population proportion.
= Two-tailed z-value for (significance level).
E= Margin of error .
Given : Margin of error = 0.03
Confidence level = 90%=0.90
By z-value table :
a) The president's political advisors estimated the proportion supporting the current policy to be : p= 0.06.
Required sample size :
∴ Required sample size = 170
b) If no prior estimate of population proportion is given , then we assume
p= 0.5
Required sample size :
∴ Required sample size = 752
To find the length of the arc, we will use the formula,
arc length = 2πR (C/360)
where,
R is the radius of the arc, which is 8"C is the central angle, which is 45°
pi is approximately equivalent to 3.14
Applying the formula,arc length = 2πR (C/360)
arc length = 2(3.14)R (45°/360)
arc length = (6.28)(8") x (0.125)
arc length = (50.24") (0.125)
arc length = 6.28"
The length of the arc is 6.28". 6.28 is also equivalent to 2π, hence, the answer is 2π.