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WINSTONCH [101]
3 years ago
12

1. 9x + 16 = 4x - 19

Mathematics
2 answers:
Genrish500 [490]3 years ago
5 0

Answer:

x=-7

Step-by-step explanation:

9x + 16 = 4x - 19

Subtract 4x from each side

9x-4x + 16 = 4x-4x - 19

5x+16 = -19

Subtract 16 from each side

5x+16 -16 = -19-16

5x = -35

Divide each side by 5

5x/5 = -35/5

x = -7

trapecia [35]3 years ago
5 0

Answer:

x = -7

Step-by-step explanation:

<h2><u>solve</u></h2>

in order to solve this , make x the subject of formula:

9x + 16 = 4x - 19

9x + 16 - 4x = -16

5x = -19 - 16

5x =-35

x = -35 / 5

<h3><u>x = -7 </u></h3>

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I don’t know the answer to that one can you help me please
dybincka [34]

Answer:

16/45

Step-by-step explanation:

Step 1:  When dividing fractions, use “KFC”.  It means Keep the first fraction, Flip the second one, and  

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-4/20 ÷ -9/16    →    -4/20 ∙ 16/-9

Step 2:  Reduce any fractions if necessary, it makes multiplying them easier and you will have to reduce anyway at the end.  It’s easier arithmetic to reduce at this step.  The first fraction reduces because both the numerator and denominator are divisible by 4.  

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Step 3:  Multiply numerators and denominators together to get one fraction

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Step 4:  Cancel out the negatives, a negative divided by a negative is a positive.  Our final answer is

 

16/45  


4 0
3 years ago
A sample of 1000 college students at NC State University were randomly selected for a survey. Among the survey participants, 102
cupoosta [38]

Answer:

The upper endpoint of the 99% confidence interval for population proportion is 0.13.

Step-by-step explanation:

The confidence interval for population proportion is:

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<u>Given:</u>

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*Use the standard normal table for the critical value.

Compute the 99% confidence interval for population proportion as follows:

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Thus, the upper limit of the 99% confidence interval for population proportion is 0.13.

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Answer:

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7.50 d + 10 d

8 0
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