<h2>__________________</h2><h2>● <u>Question</u> ●</h2><h3> Subtract: 5 – 3.19</h3><h2>__________________</h2><h2>● <u>Solution</u> ●</h2>
5.00
- 3.19
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1.81
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<h2>__________________</h2><h2>● <u>Final Answer</u> ●</h2><h2>1.81</h2><h2>__________________</h2>
3.2 x 108 The 8 is suppose to be an exponent of 10
Answer: Minimum sample size = 110
Step-by-step explanation:
Formula to find minimum sample size :
, where z = critical z-value for confidence level, s= sample standard deviation , E = margin of error
Given: E= 4 , s= 18
Critical z-value for 98% confidence = 2.327
So, 
Minimum sample size = 110
No because if you do the math if you do 215 x 48 in doesn't reach to 12000 at all.
Answer: Manal = 27 messages
Elisa = 17 messages
Abdulrahman = 51 messages
Step-by-step explanation:
Let tye number of messages that Manal sent be x.
Since Eissa sent 10 fewer messages than Manal, this will be:
= x - 10
Abdulrahman sent 3 times as many messages as Eissa. This will be:
= 3(x - 10) = 3x - 30
We are also told that Manal, Abdulrahman, and Eissa sent a total of 95 text messages. This will be:
x + (x - 10) + (3x - 30) = 95
x + x - 10 + 3x - 30 = 95
x + x + 3x - 10 - 30 = 95
5x - 40 = 95
5x = 95 + 40
5x = 135
x = 135/5
x = 27
Manal = x = 27
Elisa = x - 10 = 27 - 10 = 17
Abdulrahman = 3x - 30 = 3×27 - 30 = 81 - 30 = 51
Manal = 27 messages
Elisa = 17 messages
Abdulrahman = 51 messages
