All categories

2 years ago

Which of the following shows √-25 simplified and written as a complex number?

Mathematics

1 answer:

skelet666 [1.2K]2 years ago

4 0

-5i

Step-by-step explanation:

simplify: √-25 → 5i

put the opposite sign: 5i → -5i

You might be interested in

Question 4-1 1/4=? Plz help Plz help Plz help plz help

xenn [34]

This is the answer for that question =3 3/4

4 0

3 years ago

Read 2 more answers

which equation represents a line parallel to the line whose equation is -2x+3y=-4 and passes through the point 1,3

Sedbober [7]

Answer:

-2x+3y=7

2x-3y= -11

Step-by-step explanation:

-2x+3y= -4, which is Ax+By=C

A=-2 B=3 C=-4

m(slope)= -A/B

m= -(-2)/3

m= 2/3

y-y1= m (x-x1)

y-3= 2/3 (x-1)

Multiply by 3 cancels out the fraction

3y-9= 2 (x-1)

Distributive property

3y-9= 2x-2

-2x+3y-9= -2

From here it could go 2 ways:

1. -2x+3y= 7

2. 2x-3y+9= -2

2x-3y= -11

Hope this helps

7 0

3 years ago

Make x the subject of the formula y = a(x + b)

disa [49]

Y/a-b

Mark brainliest please

Hope this helps you

4 0

3 years ago

What is the value of \dfrac{d}{dx}\left(\dfrac{2x+3}{3x^2-4}\right) dx d ( 3x 2 −4 2x+3 )start fraction, d, divided by, d, x

stellarik [79]

Answer:

Step-by-step explanation:

We are asked to find the value of expression $\frac{d}{dx}(\frac{2x+3}{3x^2-4})$ at $x=-1$ .

First of all, we will find the derivative of the given expression using "Quotient Rule of Derivatives" as shown below:

$(\frac{f(x)}{g(x)})'=\frac{f'(x)\cdot g(x)-f(x)\cdot g'(x)}{(g(x))^2}$

$\frac{d}{dx}(\frac{2x+3}{3x^2-4})$

$\frac{\frac{d}{dx}(2x+3)*(3x^2-4)-(2x+3)*\frac{d}{dx}(3x^2-4)}{(3x^2-4)^2}$

$\frac{2*(3x^2-4)-(2x+3)*(6x)}{(3x^2-4)^2}$

$\frac{6x^2-8-12x^2-18x}{(3x^2-4)^2}$

$\frac{-6x^2-18x-8}{(3x^2-4)^2}$

Therefore, our required derivative is $\frac{-6x^2-18x-8}{(3x^2-4)^2}$ .

Now, we will substitute $x=-1$ in our derivative to find the required value as:

$\frac{-6(-1)^2-18(-1)-8}{(3(-1)^2-4)^2}$

$\frac{-6(1)+18-8}{(3(1)-4)^2}$

$\frac{-6+18-8}{(3-4)^2}$

$\frac{4}{(-1)^2}$

$\frac{4}{1}$

$4$

Therefore, the value of expression $\frac{d}{dx}(\frac{2x+3}{3x^2-4})$ at $x=-1$ is 4.

6 0

3 years ago

Can some body check my math on this one(question #6) I think it’s n=26 am I right?

Advocard [28]

Answer:

$n=26$

Step-by-step explanation:

So we have the equation:

$-413.4=-15.9n$

To figure out the value of n, divide both sides by -15.9. The right will cancel. Thus:

$n=(-413.4)/(-15.9)$

Use a calculator:

$n=26$

So, the answer is 26.

So, yes, you are very correct!

4 0

3 years ago

Read 2 more answers