<u><em>Answer:</em></u>
<h2>
<em><u>15</u></em></h2>
<u><em>Step-by-step explanation:</em></u>
<u><em>31-16=15</em></u>
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<u><em>~Brainly would be appreciated~</em></u>
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<u><em>-~Gavin~</em></u>
Answer:
a = 11
Step-by-step explanation:
distribute and combine like terms
6a + 18 = 4a + 40
2a = 22
a =11
Answer:
2.42
Step-by-step explanation:
standard deviation= sqrt(variance)
Variance=E[X2] - E[X]2
E[X] = sum(X)/n=35/9, so E[X]2 = 1225/81
E[X2] =sum(X2)/n = 189/9 = 170/81
Variance= 476/81
Standard deviation = sqrt(476/81) ~2.42
The algebraic expression for the word phrase "the product of a number and 3" as a variable expression is 3z
<h3>How to write an algebraic expression for the word phrase "the product of a number and 3" as a variable expression?</h3>
The word phrase is given as:
"the product of a number and 3"
Represent the number with z
So, the word phrase can be rewritten as:
"the product of a number z and 3"
The product of a number z and 3 is represented as:
z * 3
When evaluated,, the expression becomes
z * 3 = 3z
Hence, the algebraic expression for the word phrase "the product of a number and 3" as a variable expression is 3z
Read more about algebraic expression at
brainly.com/question/4344214
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Answer:
30.2
Step-by-step explanation:
