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svet-max [94.6K]
2 years ago
10

(I RAISED THE POINTS AND THIS IS MULTIPLE CHOICE PLEASE TRY TO EXPLAIN WHY YOU GOT THAT ANSWER THANKS~~)

Mathematics
2 answers:
Art [367]2 years ago
5 0

Ok so if you want the 11th term you have to put 11 instead of n so it’s

-6*11+13=-53

romanna [79]2 years ago
5 0

Answer:

53

Step-by-step explanation:

You are asking for a(11), having provided the general formula

a(n) = -6n + 13.

Substituting 11 for n, we get:

a(11) = -6(11) + 13 = 13 - 66 = 53

The 11th term is 53.

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\displaystyle\bf\\2cos^2y -sin\,y -1=0~~~for~~0^o\leq y \leq360^o\\\\cos^2y=1-sin^2y\\\\2(1-sin^2y) -sin\,y -1=0\\\\2-2sin^2y-sin\,y-1=0\\\\-2sin^2y-sin\,y+2-1=0\\\\-2sin^2y-sin\,y+1=0~~~\Big|\times(-1)\\\\2sin^2y+sin\,y-1=0

.

\displaystyle\bf\\\boxed{\bf sin\,y=x}\\\\2x^2+x-1=0\\\\x_{12}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{-1\pm\sqrt{1-4\cdot2\cdot(-1)}}{2\cdot2}=\\\\=\frac{-1\pm\sqrt{1+8}}{4}=\frac{-1\pm\sqrt{9}}{4}=\frac{-1\pm3}{4}\\\\x_1=\frac{-1+3}{4}=\frac{2}{4}=\boxed{\bf\frac{1}{2}}\\\\x_2=\frac{-1-3}{4}=\frac{-4}{4}=\boxed{\bf-1}\\\\sin\,y=\frac{1}{2}\\\\\boxed{\bf y_1=\frac{\pi}{6}~~or~~(30^o)}\\\\\boxed{\bf y_2=\frac{5\pi}{6}~~or~~(150^o)}\\\\sin\,y=-1\\\\\boxed{\bf y_3=\frac{3\pi}{2}~~or~~(270^o)}

 

 

5 0
3 years ago
Nadia owes her friend $8 for a movie ticket, $3 for popcorn, and $2 for a soda. Which of the following represents how much money
Novay_Z [31]
8+2+3= 13. So Nadia owes her friend $13
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3 years ago
Read 2 more answers
Chad is a co owner of a small company and received 1/3 of the company’s profits this year. What were the company’s overall profi
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Answer:

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Step-by-step explanation:

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The company's overall profits were $450,000.

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3 years ago
Question 1 (1 point)
Karo-lina-s [1.5K]

Answer:

ok

Step-by-step explanation:

4 0
2 years ago
Help Anyone??<br> need it asap<br> 7th grade math<br> tysm
Lelechka [254]

Answer:

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Step-by-step explanation:

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