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puteri [66]
3 years ago
6

If 3x plus 2 equals 90 then what is the value of x

Mathematics
1 answer:
Firdavs [7]3 years ago
4 0

Hello!

3x+2=90

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓↓

First you had to subtract by 2 from both sides of the equation.

3x+2-2=90-2

Simplify

3x=88

Then you divide by 3 from both sides of the equation.

\frac{3x}{3}=\frac{88}{3}

Simplify it should be the correct answer.

x=\frac{88}{3}

Answer⇒⇒⇒⇒⇒x=88/3

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

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He exponential model describes the​ population, A, of a country in​ millions, t years after 2003. Use the model to determine the
Tasya [4]

Complete question :

The exponential model A=16.2e^0.01t describes the population, A, of a country in millions, t years after 2003. What was the population in 2003?

Answer:

16.2 million

Step-by-step explanation:

Given the equation :

A=16.2e^0.01^t

Where, t = number of years after 2003

The population in year 2003 ; can be obtained thus ;

t = 2003 - 2003 = 0

Put t = 0 in the equation :

A(0) =16.2e^0.01^0

A(0) = 16.2 * 1

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7 0
2 years ago
Examination of court records in a particular state shows that the mean sentence length for first-offense drug dealers is 26 mont
Zigmanuir [339]

Answer and explanation:

Given : Examination of court records in a particular state shows that the mean sentence length for first-offense drug dealers is 26 months with a standard deviation of 2 months. The records show that the sentence lengths are normally distributed.

i.e. Mean \mu=26, Standard deviation \sigma=2

Using Z-score formula,

Z=\frac{\bar{x}-\mu}{\sigma}

1) What is the Z score for a 23 month sentence length? What is the probability of getting a sentence below that?

The Z score value for a \bar{x}=23 is given by,

Z=\frac{23-26}{2}

Z=\frac{-3}{2}

Z=-1.5

The probability of getting a sentence below that is P(X

i.e. P(X

P(X

2) A defense attorney is concerned that his client's sentence was unusually harsh at 30 months. What percent of sentences are 30 months or longer? Calculate the Z score and report the area.

The Z score value for a \bar{x}=30 is given by,

Z=\frac{30-26}{2}

Z=\frac{4}{2}

Z=2  

The probability of getting a sentence below that is P(X\geq 30)

i.e. P(X\geq 30)=1-P(Z\leq 2)

P(X\geq 30)=1-0.977

P(X\geq 30)=0.023

Into percentage, P(X\geq 30)=2.3\%

3) Would you consider a 30 month sentence harsh? Explain

Since the percentage for 30 months or greater is harsh because the smaller value of percentage of P(X\geq 30)=2.3\%

7 0
3 years ago
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