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2 years ago

Please help hurry!!!

Mathematics

1 answer:

rosijanka [135]2 years ago

4 0

Answer:

6c² + 2c + 1

Step-by-step explanation:

4 + 4c + 3c² - 2c + 3c² - 3

Rearrange the experresion.

4 - 3 + 4c - 2c + 3c² + 3c²

Combine like terms.

1 + 2c + 6c²

Use the commutative property to reorder the terms.

6c² + 2c  + 1

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6-2x=5x-9x+12 what is the value of x its for savvas realize

Sidana [21]

Answer:like terms: 5x + -9x = -4x 6 + -2x = -12 + -4x Solving 6 + -2x = -12 + -4x Solving for variable 'x'.

Step-by-step explanation:

6 - 2x = 5x - 9x + 18 - 12 6 - 2x = -4x + 6 -2x = -4x 4x - 2x = 0 2x = 0 x = 0 / 2 x = 0.

7 0

2 years ago

Read 2 more answers

Show that 1n^ 3 + 2n + 3n ^2 is divisible by 2 and 3 for all positive integers n.

Dmitry_Shevchenko [17]

Prove:

Using mathemetical induction:

P(n) = $n^{3}+2n+3n^{2}$

for n=1

P(n) = $1^{3}+2(1)+3(1)^{2}$ = 6

It is divisible by 2 and 3

Now, for n=k, $n > 0$

P(k) = $k^{3}+2k+3k^{2}$

Assuming P(k) is divisible by 2 and 3:

Now, for n=k+1:

P(k+1) = $(k+1)^{3}+2(k+1)+3(k+1)^{2}$

P(k+1) = $k^{3}+3k^{2}+3k+1+2k+2+3k^{2}+6k+3$

P(k+1) = $P(k)+3(k^{2}+3k+2)$

Since, we assumed that P(k) is divisible by 2 and 3, therefore, P(k+1) is also

divisible by 2 and 3.

Hence, by mathematical induction, P(n) = $n^{3}+2n+3n^{2}$ is divisible by 2 and 3 for all positive integer n.

3 0

3 years ago

A plane flew 193 km in 12 minutes at constant speed. what was the speed of the airplane in km per hour?

garri49 [273]

A plane flew 193 km in 12 minutes at constant speed. what was the speed of the airplane in km per hour? "965 km'

4 0

2 years ago

90 Points. PLEASE HELPPP!!! ILL SELECT BRAINLIESST

forsale [732]

Answer:

Step-by-step explanation:

these are the intervals of people who are at least adults and are mature enough to take the survey seriously and answer correctly.

You can say with 95 percent certain of the real mean of the population, but you acknowledge that due to difficulties such as, sampling error, real-life problems such as bad weather, bad vision of the surveyed, not knowing the language and due to bad wording, your answers are unsure is the range of 8 percent due the fluctuation of data caused by bad circumstances.

I believe there should be a quota of 50 to 50 percent to make the data the most equal, though I understand that there may not be an equal distribution of land and cell lines among the U.S. mature populace.

(Since I don't have the data, I can't answer part 4)

6 0

3 years ago

Two payment options to rent a car: You can pay $20 a day plus 25¢ a mile (Option A) or pay $10 a day plus 50¢ a mile (Option B).

BaLLatris [955]

You must drive more than 40 miles to make option A the cheaper plan

Solution:

Two payment options to rent a car

Let "x" be the number of miles driven in one day

You can pay $20 a day plus 25¢ a mile (Option A)

25 cents is equal to 0.25 dollars

OPTION A : 20 + 0.25x