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3 years ago

Identify radicand of 2 either as a rational or irrational

Mathematics

2 answers:

faltersainse [42]3 years ago

6 0

The radicand of 2 is irrational

Nana76 [90]3 years ago

4 0

The radicand is the number under the square root symbol. If it's a 2, then the 2 is rational, but its square root is irrational.

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This last one I need help on too

ExtremeBDS [4]

Answer:

$x=\frac{3}{4}+i\frac{\sqrt{7}}{4},\:x=\frac{3}{4}-i\frac{\sqrt{7}}{4}$

Step-by-step explanation:

simplify $\frac{-3}{x-2}$ by putting the negative sign on the outside. $\frac{2x}{x-1}-\frac{2x-5}{x^2-3x+2}=-\frac{3}{x-2}$

find the LCM of the denominators. It is (x-1)(x-2). Multiply by the LCM:

$\frac{2x}{x-1}\left(x-1\right)\left(x-2\right)-\frac{2x-5}{x^2-3x+2}\left(x-1\right)\left(x-2\right)=-\frac{3}{x-2}\left(x-1\right)\left(x-2\right)$

Simplify:

$2x\left(x-2\right)-\left(2x-5\right)=-3\left(x-1\right)$

solve: $x=\frac{3}{4}+i\frac{\sqrt{7}}{4},\:x=\frac{3}{4}-i\frac{\sqrt{7}}{4}$

3 0

3 years ago

Please prove the following trigonometric identity.<br><br>

Brums [2.3K]

Step-by-step explanation:

solution:- from LHS 1-cos²x/sinx

∵ 1-cos²x = sin²x

∴ sin²x /sinx = sinx

from RHS tanx × cosx

∵tanx = sinx×cosx

∴ sinx/ cosx × cosx = sinx

Since, LHS = RHS proved ___

3 0

2 years ago

What will happen to the mean of the data below if the outlier, 57, is added? 23,28, 27, 25,25,22,25 A.The mean will not change B

Anvisha [2.4K]

Answer is c (there is not a enough info given)

3 0

3 years ago

15m+m+2 <br> I need help on combining like terms

Mice21 [21]

Answer:

its 16m+2

Step-by-step explanation:

you add m and 15 m because they have the same variable.

then you put the two right next to it

4 0

3 years ago

Please help a step by step would be nice answer is also ok

nasty-shy [4]

I would choose A I’m not to sure tho

6 0

3 years ago