Answer:
B. 359
Step-by-step explanation:
Given that:
The margin of error (e) must be within 0.3 unit, The standard deviation (σ) = 2.9 and the the confidence level = 95% = 0.95
α = 1 =0.95 = 0.05
The z score of 0.025 corresponds to the z score of 0.0475 (0.5 - 0.025) which can be gotten from the normal probability table.
Therefore: 
The formula for the margin of error is given by:
Therefore the smallest sample size (n) is 359
C. 4:5=32:40 is your answer
Treat each ratio like fractions. Note the equal sign. This means that, when each fraction is simplified, they would be the same.
4/5 = 4/5
(32/40)/(8/8) = 4/5
4/5 = 4/5
∴ (C) is your answer
~<em>Rise Above the Ordinary, Senpai</em>
Answer:
1 2/21
Step-by-step explanation:
3/7+2/3.
Cross mutiply:
7*3 is 21.
3*3 is 9.
7*2 is 14.
14/21+9/21.
Add: 14+9=23.
23/21.
1 2/21.
Hope this helps plz hit the crown :D
I guess that's f(x) = -3x^2+2
Well :
-3x^2+2=0
-3x^2=-2 / : (-3)
x^2= -2/-3
x^2= 2/3 / sqrt
x= +/ - sqrt(2)/sqrt(3)
We got the zero points.
x ~ +/- 0.81
f(0)= -3(0)^2 + 2
f(0)= 2
Mark three points:
(0.81;0)
(-0.81;0)
(0;2)
Connect with parabolic line and ya got a your graph
Answer: 4y+4z
Step-by-step explanation:
