Answer:
Step-by-step explanation:
the third option
Answer: Lcm=60
Step-by-step explanation: but if you want lcf its always 1
Answer:
$23.54
Step-by-step explanation:
12.95+2.76+7.83=23.54
Given:
<span> x=12, y=8, z=3
4x-yz = 4(12) - (8)(3)
</span>4x-yz = 48 - 24
4x-yz = 24
Answer:
Mean = 30.68
Standard deviation = 6.095
Two standard deviations above the mean = 42.87
Step-by-step explanation:
Given the following data :
21; 21; 22; 23; 24; 24; 25; 25; 28; 29; 29; 31; 32; 33; 33; 34; 35; 36; 36; 36; 36; 38; 38; 38; 40
Mean = Σ(x) / n
n = 25
Σ (X) = 767
Mean (m) = 767 / 25
Mean (m) = 30.68
Standard deviation : sqrt[Σ(x - m) / n]
Using a calculator :
Standard deviation = 6.095 ( 2 decimal places)
2 standard deviations above the mean :
Mean + 2(standard deviation)
Mean + 2(6.095)
30.68 + 12.19
30.68 + 12.19
= 42.87
