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3 years ago

6(3n+1)-3(-1+2n)=n+2

1 answer:

7 0

First, you want to distribute the 6 and the -3. This turns you equation into 18n+6+3-6n=n+2. Next, put all the n's on one side and numbers on the other. 18n-6n-n=2-6-3. Then, combine. 11n=-7 -> n=-7/11. Hope this helps!

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Solve with matrices. <br><br> 5x -3y = 18 and 2x + 7y = -1

muminat

We'll use Cramer's rule for 2 equations:

ax + by = e

cx + dy = f

5x -3y = 18 a=5 b=-3 e=18

2x + 7y = -1 c=2 d=7 f=-1

denominator determinant (dn) = (a * d) - (c * b) = 5 * 7 - (2 * -3) = 41

x = [(e * d) - (f * b)] / dn

[18 * 7 - (-1 * -3)] / 41 =

123 / 41 = 3

y = [(a * f) - (c * e)] / dn

= (5 * -1) -(2 * 18) / 41 =

-41 / 41 = -1

Source:

1728.com/cramer.htm

6 0

3 years ago

What is the constant term in the expansion of the binomial (2x + 3)3?

guajiro [1.7K]

The answer is 27 but I am not sure I hope my calculations ain't wrong

4 0

3 years ago

After graduation your first job is with abibas inc., a company that specializes in sportswear with collegiate logos. to improve

Aleksandr [31]

The probability that the new UNC-CH logo will be profitable is <u>0.9897 </u>while the probability for NC State will be <u>0.9600.</u>

<h3 /><h3>What is the probability that the brands will be successful?</h3>

The probability that the UNC-CH logo is successful is:

= Favorable odds / Total odds

= 96 / (96 + 1)

= 0.9897

The probability that the NC State logo is profitable is:

= Favorable odds / Total odds

= 24 / (24 + 1)

= 0.9600

There is less than a 3% variation in both logos' profitablility probability so the company should not spend 4 times more on UNC-CH.

Find out more on probabilities of profit at brainly.com/question/13500115.

#SPJ1

4 0

2 years ago

(5f − 3) (–2) <br><br> help me plz lolz

Marat540 [252]

Answer:

Step-by-step explanation:

(5f-3)(-2)

-10f + 6 = 0

f= 6 + 10

f = 16

7 0

2 years ago

Select all that apply. Which of the following are proportions? 25/10=5/2,3/4=8/10,2/8=3/12,3/4=15/20

8_murik_8 [283]

Answer:

$\frac{25}{10} = \frac{5}{2}$ is in proportion.

$\frac{3}{4} = \frac{8}{10}$ is not in proportion.

$\frac{2}{8} = \frac{3}{12}$ is in proportion.

$\frac{3}{4} = \frac{15}{20}$ is in proportion.

Step-by-step explanation:

The first example is $\frac{25}{10} = \frac{5}{2}$ and it is in proportion.

This is because, you will get the same simplest fraction ( $\frac{5}{2}$ ) from the fraction $\frac{25}{10}$ by dividing its numerator and denominator by 5.

The second example is $\frac{3}{4} = \frac{8}{10}$ and it is not in proportion.

This is because, you can not get the simplest fraction ( $\frac{3}{4}$ ) from the fraction $\frac{8}{10}$ after simplification.

The third example is $\frac{2}{8} = \frac{3}{12}$ and it is in proportion.

This is because, you will get the same simplest fraction ( $\frac{1}{4}$ ) from the fraction $\frac{2}{8}$ by dividing its numerator and denominator by 2 and from the fraction $\frac{3}{12}$ by dividing its numerator and denominator by 3.

The fourth example is $\frac{3}{4} = \frac{15}{20}$ and it is in proportion.

This is because, you will get the same simplest fraction ( $\frac{3}{4}$ ) from the fraction $\frac{15}{20}$ by dividing its numerator and denominator by 5. (Answer)

3 0

2 years ago

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