4 years ago

Sum or difference identity could be used to prove that sin (pi + q) = -sin q

Mathematics

1 answer:

olya-2409 [2.1K]4 years ago

7 0

Answer:

sup

Step-by-step explanation:

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Answer qn in attachment

leva [86]

Answer:

$\implies \dfrac{ -4x+7}{2(x-2) }$

Step-by-step explanation:

The given expression to us is ,

$\implies \dfrac{\frac{ 3}{x-1} -4 }{ 2 -\frac{2}{x-1}}$

Now take the LCM as ( x - 1 ) and Simplify , we have ,

$\implies \dfrac{\frac{ 3 -4(x-1) }{x-1} }{ \frac{2-2(2x-1)}{x-1}}$

Simplifying further , we get ,

$\implies \dfrac{ -4x+7}{2(x-2) }$

Hence the second option is correct .

4 0

3 years ago

There are 11 students on the tennis team. The coach selects 3 of them to go to atennis clinic. In how many ways can he choose 3

Komok [63]

Answer:

165 ways

Step-by-step explanation:

Selection deals with combination

There are a total of 11 from which 3 are to be selected

11C3 = 11!/3!(11-3)!

= 11!/(3!x8!)

=(11x10x9x8!)/(3x2x8!)

=11x10x9/6

=11x5x3 = 165 ways

8 0

3 years ago

9/16 plus 1/2 = 9 sixteenths plus one half answer

klemol [59]

$\frac{9}{16} + \frac{1}{2} = \frac{9}{16} + \frac{8}{16} = \frac{17}{16} = 1 \frac{1}{16}$

7 0

3 years ago

Read 2 more answers

Which value is greater 4/5 or 70%

Marta_Voda [28]

Answer:

4/5

Step-by-step explanation:

4/5 = .8

70% = .7

4 0

3 years ago

Read 2 more answers

In a school of 500 students, 160 have blue eyes, 320 have brown eyes, and 20 have green eyes. In a class of 25 students, how man

jok3333 [9.3K]

<span>8/25 students : because there are 160/500 in the school. 160 divided by 500 is 0.32. 8 divided by 25 is 0.32. its equivalent so 8</span>
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3 0

3 years ago