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Aliun [14]
3 years ago
9

Need help with homework​

Mathematics
1 answer:
Nutka1998 [239]3 years ago
6 0

Answer:

Where is the homework?

Step-by-step explanation:

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Find the limit. use l'hospital's rule where appropriate. if there is a more elementary method, consider using it. lim x→0 sin(9x
alisha [4.7K]
\displaystyle\lim_{x\to0}\sin9x\csc7x=\lim_{x\to0}\frac{\sin9x}{\sin7x}=\frac97\lim_{x\to0}\frac{7x\sin9x}{9x\sin7x}

Recall that for a\neq0,

\displaystyle\lim_{x\to0}\frac{\sin ax}{ax}=\lim_{x\to0}\frac{ax}{\sin ax}=1

You can separate the two expressions with a=7 and a=9, which both approach 1, so that the limit is \dfrac97.

Alternatively, using L'Hopital's rule,

\displaystyle\lim_{x\to0}\frac{\sin9x}{\sin7x}\stackrel{\mathrm{LHR}}=\lim_{x\to0}\frac{9\cos9x}{7\cos7x}=\dfrac97
7 0
3 years ago
Write an equation of the line that passes through the point (0, 3) and whose slope is 2.
Ludmilka [50]

Step-by-step explanation:

Given ( 0 , 3) and slope (m) = 2

Now the equation of line is

y - y1 = m ( x - x1)

y - 3 =2 ( x -0)

y - 3 = 2x

2x - y +3 = 0

which is the required equation

5 0
3 years ago
Read 2 more answers
At a school number of boys : number of girls = 11 : 9
aliya0001 [1]
Ok, so 11:9
11-9 = 2
which means that 124= 2:1
124/2 = 62
so 62:0
now 11 x 62= 682
9 x 62= 558

so the ratio is 682:558
now 682 + 558 = 1,240
There are 1,240 total students in the school. 682 boys and 558 girls
8 0
3 years ago
Which of these is an algebraic expression? A. 1 + 2 B. 2b – 5 C. 6 × 4 D. 102
Alexxx [7]
The answer is b because of the letter in the answer.
3 0
3 years ago
1.)<br>Х<br>ui<br>Na<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B5%7D%20%20%5Ctimes%20%20%5Cfrac%7B7%7D%7B9%7D%20"
MAVERICK [17]

if your question is 3/5*7/9...

Step-by-step explanation:

3/5*7/9

3*7/5*9

21/ 45 / 7/15

hope your question is 3/5*7/9 ... so, it will help you ... If it helps , plz mark me brilliantiest

..

6 0
3 years ago
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