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3 years ago

Which equation describes the nth term of the arithmetic sequence {2, -1, -4, -7, ...}

Mathematics

1 answer:

Artyom0805 [142]3 years ago

7 0

Answer:

jsshdhdnfmfff

Step-by-step explanation:

jxdhfjdiididdodkd

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Wha is 5÷312 in long division

bezimeni [28]

The answer is 62 with a remainder of 2.

Hope this helps!

5 0

3 years ago

Suppose you choose a team of two people from a group of n > 1 people, and your opponent does the same (your choices are allow

jonny [76]

Answer:

The number of possible choices of my team and the opponents team is

$\left\begin{array}{ccc}n-1\\E\\n=1\end{array}\right i^{3}$

Step-by-step explanation:

selecting the first team from n people we have $\left(\begin{array}{ccc}n\\1\\\end{array}\right) = n$ possibility and choosing second team from the rest of n-1 people we have $\left(\begin{array}{ccc}n-1\\1\\\end{array}\right) = n-1$

As { A, B} = {B , A}

Therefore, the total possibility is $\frac{n(n-1)}{2}$

Since our choices are allowed to overlap, the second team is $\frac{n(n-1)}{2}$

Possibility of choosing both teams will be

$\frac{n(n-1)}{2} * \frac{n(n-1)}{2} \\\\= [\frac{n(n-1)}{2}] ^{2}$

We now have the formula

1³ + 2³ + ........... + n³ = $[\frac{n(n+1)}{2}] ^{2}$

1³ + 2³ + ............ + (n-1)³ = $[x^{2} \frac{n(n-1)}{2}] ^{2}$

= $\left[\begin{array}{ccc}n-1\\E\\i=1\end{array}\right] = [\frac{n(n-1)}{2}]^{3}$

4 0

3 years ago

Someone help me please

Gemiola [76]

Answer:

$x=2\sqrt{6}$

Step-by-step explanation:

Use the Pythagorean theorem:

$a^2+b^2=c^2$

a and b are the legs and c is the hypotenuse. Insert the values:

$\sqrt{10}^2+\sqrt{14}^2=x^2$

Simplify exponents using the rule $\sqrt{x}^2=x$ :

$10+14=x^2$

Simplify addition:

$24=x^2\\x^2=24$

Find the square root:

$\sqrt{x^2}=\sqrt{24}\\ x=\sqrt{24}$

Simplify in radical form: Find a common factor of 24 that is a perfect square:

$\sqrt{24}=\sqrt{4*6}$

Separate:

$\sqrt{4}*\sqrt{6}$

Simplify:

$2*\sqrt{6}\\x=2\sqrt{6}$

Finito.

3 0

3 years ago

Read 2 more answers

Convert (20 possible points)

Sergeeva-Olga [200]

Answer:

9.7*10^9 or 9,700,000,000

Step-by-step explanation:

To find the answer, multiply 9.7 * 10^6 by 1000 times becasue 1kg = 1000g, we got:

9.7 * 10^6 * 1000 = 9.7*10^9 or 9,700,000,000

Hope this help you :3

8 0

3 years ago

Read 2 more answers

The numbers of pages in the books in a library follow a normal distribution. If the mean number of pages is 180 and the standard

Katena32 [7]

16% have fewer pages
84% have more pages

8 0

3 years ago