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g100num [7]
2 years ago
10

The product of a number and three increased by four is the same as fourteen less than the product of twelve and a number

Mathematics
2 answers:
Deffense [45]2 years ago
3 0

Answer:

Let the number be x.

3*x+4=12*x-14

3x+4=12x-14

Subtract 4 from both sides:

3x+4-4=12x-14-4

3x=12x-18

Subtract 12x from both sides:

3x-12x=12x-18-12x

-9x=-18

Divide both sides by -9:

\frac{-9x}{-9} =\frac{-18}{-9}

x=2

The number is 2.

kondaur [170]2 years ago
3 0
I believe the number is 2 or -2
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3 years ago
What is the simplified form of this expression?<br><br> 7a2 + 10a − 3a − 2a2
nikklg [1K]

Answer:

What is the simplified form of this expression?

7a2 + 10a − 3a − 2a2

Step-by-step explanation:

7a2 + 10a − 3a − 2a2

Combine like terms

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742 + 7a - 2a2

solution=

5a2 + 7a

6 0
3 years ago
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zepelin [54]
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7 0
3 years ago
The mean of a certain set of measurements is 27 with a standard deviation of 14. The distribution of the
Talja [164]

Answer:

Exactly 16%.

Step-by-step explanation:

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

The mean of a certain set of measurements is 27 with a standard deviation of 14.

This means that \mu = 27, \sigma = 14

The proportion of measurements that is less  than 13 is

This is the p-value of Z when X = 13, so:

Z = \frac{X - \mu}{\sigma}

Z = \frac{13 - 27}{14}

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8 0
3 years ago
Help me please thanks
SVEN [57.7K]

Answer:

5/6

Step-by-step explanation:

(-6 - 4) / (3 * -4)  [substitute a and b]

-10 / -12  [multiply the values in parenthesis]

5 / 6  [simplify by dividing by the common factor 2]

6 0
3 years ago
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