22.4
= 22 + 4/10
-------------------------
Or:
22.4
= 224/10
= 112/5
━━━━━━━☆☆━━━━━━━
▹ Answer
<em>1/3a + c - 7b</em>
▹ Step-by-Step Explanation
(4/3a - 3c - 5b) + (-a - 2b + 4c)
<u>Remove the parentheses</u>
(4/3a - 3c - 5b) + (-a - 2b + 4c)
<u>Rewrite</u>
4/3a - 3c - 5b - a - 2b + 4c
<u>Calculate</u>
1/3a - 3c - 5b - 2b + 4c
<u>Final Answer</u>
1/3a + c - 7b
Hope this helps!
- CloutAnswers ❁
Brainliest is greatly appreciated!
━━━━━━━☆☆━━━━━━━
Answer:
0.0359
Step-by-step explanation:
Data provided:
mean values of three independent times are 15, 30, and 20 minutes
the standard deviations are 2, 1, and 1.6 minutes
Now,
New Mean = 15 + 30 + 25 = 65
Variance = ( standard deviation )²
or
Variance = 2² + 1² + 1.6² = 7.56
therefore,
Standard deviation = √variance
or
Standard deviation = 2.75
Thus,
Z-value = 
or
Z-value = - 1.81
from the Z-table
the Probability of Z ≤ -1.81 = 0.0359
Answer:
Step-by-step explanation:
yoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo thats a test question