MATHEMATICS HIGH SCHOOL

Given the trinomial, what is the value of the coefficient 'B' in the factored form?2x2 + 14xy − 36y2 = 2(x + By)(x − 2y)

B= ____________

Answers

Answer 1
Answer: 2x2 + 14xy -36y2 = (2x+2By)(x - 2y) 
2x2 + 14xy -36y2  = 2x2 -4xy +2Bxy -4By2 
2x2 + 14xy -36y2  = 2x2 + (2B-4)xy -4By2 
since the coefficient of y2 is equal so 
-4B = -36 
B = 9 
if you want to make sure subs in coeeficient of xy by B=9 
and you'll get 14 so the answer is right 
B=9 
Answer 2
Answer:

Answer:

the answer is B=9 i think

Step-by-step explanation:

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Answers

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Answer
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Answers

Answer:

Step-by-step explanation:

The mean score on a calculus exam was 40, and the standard deviation was 5. The teacher decided to double everyone’s score and then added 7 points. What are the values of the mean and standard deviation of the distribution of transformed exam scores? (Options: mean = 80 and standard deviation = 5, mean = 80 and standard deviation = 10, mean = 87 and standard deviation = 5, mean = 87 and standard deviation = 10, mean = 87 and standard deviation = 17)

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hope this helps! please give brainliest :)

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Answers

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