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3 years ago

[-4 + n - 2n x 2n] + [ 2 - 5n - 6n x 6n]

Mathematics

1 answer:

Kamila [148]3 years ago

3 0

Answer:

- 2 - 4n - 8n²

Step-by-step explanation:

thats ur anser

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HELP PLS ASAP!!!!!!!!!!!!!!!!!!!!!!!! MATH! HELP! (BRAINLISYT) PLEASE HELP IM BEGGING YOU!!

inn [45]

Answer:

Step-by-step explanation:

360(50/360)=50

5 0

3 years ago

(sec theta - tan theta)²

WARRIOR [948]

Answer:

(sec θ - tan θ)²

= sec² θ –2 sec θ tan θ + tan² θ

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3 years ago

8 minus some number divided by 3 equals 6. Find the number

san4es73 [151]

Answer:

my answer is negative 14/3.

Step-by-step explanation:

choice A hope that helps you if I'm wrong please tell me the right answer right away I can try another method.

6 0

3 years ago

What is the sum of the geometric series in which a1 = 4, r = 3, and an = 324?

olganol [36]

$\bf n^{th}\textit{ term of a geometric sequence}\\\\
a_n=a_1\cdot r^{n-1}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=4\\
r=3\\
a_n=324
\end{cases}
\implies 
324=4(3)^{n-1}
\\\\\\
\cfrac{324}{4}=3^{n-1}\implies 81=3^{n-1}\implies 3^4=3^{n-1}\implies 4=n-1
\\\\\\
\boxed{5=n}\\\\$

$\bf -------------------------------\\\\
\qquad \qquad \textit{sum of a finite geometric sequence}\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=4\\
r=3\\
n=5
\end{cases}
\\\\\\
S_5=4\left( \cfrac{1-3^5}{1-3} \right)\implies S_5=4\left(\cfrac{1-243}{-2} \right)$

and surely you know how much that is.

8 0

3 years ago

Please help ill give brainliest if correct

yan [13]

Answer:

130

Step-by-step explanation:

ABC = 180 - 120 = 60

ACB = 180 - 70 - 60 = 50

ACD = 180 - 50 = 130

I hope I've helped you.

3 0

3 years ago

[-4 + n - 2n x 2n] + [ 2 - 5n - 6n x 6n]​

[-4 + n - 2n x 2n] + [ 2 - 5n - 6n x 6n]