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liberstina [14]
3 years ago
11

2x+9=3x+1 what does x equal

Mathematics
2 answers:
eimsori [14]3 years ago
7 0

Answer:

8 =x

Step-by-step explanation:

2x+9=3x+1

Subtract 2x from each side

2x-2x+9=3x-2x+1

9 = x+1

Subtract 1 from each side

9-1 = x+1-1

8 =x

Alja [10]3 years ago
3 0

Answer:

x = 8

Step-by-step explanation:

2x + 9 = 3x + 1

Add -3x and -9 on both sides.

2x + 9 - 3x - 9= 3x + 1 - 3x - 9

2x - 3x = 1 - 9

Combine like terms.

-1x = -8

Divide both sides by -1.

-1/-1x = -8/-1

x = 8

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4 years ago
A university is applying classification methods in order to identify alumni who may be interested in donating money. The univers
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The accuracy in the research done by university is 0.81, sensitivity is 0.93, specificity is 0.81 and precision is 0.047.

Given sample size of 58205 and proportion of people donated 576. Cutoff is 0.5.

Probability is the chance of happening an event among all the events possible. It lies between 0 and 1.

TP=total people donated in sample, TN=total number of people,FP=donation,FN=No donation

Accuracy is calculated as under:

=(TP+TN)/(TP+TN+FP+FN)

=(268+23439)/(238+23439+5375+20)

=23707/29102

=0.81

Accuracy=0.81

Sensitivity is calculated as under:

=TP/(TP+FN)

=268/(268+20)

=268/288

=0.93

Precision is calculated as under:

=TP/(TP+FP)

=268/(268+5375)

=268/5643

=0.047

Their values are the probabilities in itself.

Hence accuracy is 0.81, sensitivity is 0.93, specificity is 0.81 and precision is 0.047.

Learn more about probability at brainly.com/question/24756209

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2 years ago
Find mZBAC<br> A<br> 20°<br> B<br> 11<br> 11
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Answer:

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3 years ago
Classify the system of equations 2x=-3-y 4+y=-2x-2
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Answer:

parallel

Step-by-step explanation:

we have

2x=-3-y

isolate the variable y

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4+y=-2x-2

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y=-2x-2-4

y=-2x-6 -----> equation B

Remember that

If two lines are parallel, then their slopes are the same

Line A and Line B have the same slope m=-2 and different y-intercept

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4 0
3 years ago
Read 2 more answers
Use the LCD to rewrite the 1/6 and 3/8 with the same denominator.
oee [108]

Answer:

1/6 becomes 4/24 and 3/8 becomes 9/24.

Step-by-step explanation:

The LCD of the denominators is 24 because that is the lowest number that 6 and 8 are both related too (6 times 4 is 24, and 8 times three is 24). Since 6 goes into 24 4 times, multiply 1 (the numerator) by 4 and you get 4. Since 8 goes into 24 3 times, multiply 3 (the numerator) by 3 and you get 9.

4 0
3 years ago
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