2 years ago

Simplify -2√-45 please

Mathematics

2 answers:

algol [13]2 years ago

8 0

Answer:

l-4l+l-3l??

Step-by-step explanation:

Tatiana [17]2 years ago

4 0

Answer:

$-6\sqrt{5i}$

Step-by-step explanation:

$\sqrt{-45} =3\sqrt{5}i$

$-2$ * $3\sqrt{5i}$

= $-6\sqrt{5i}$

You might be interested in

Jill made 20 muffin. She put them into 3 boxes and has two muffins left. How many are in each box if they all contain the same a

vitfil [10]

Each have six in them because six times three equals eighteen and twenty minus two equals eighteen.hope this helps

4 0

2 years ago

Help help help help help plz

sweet-ann [11.9K]

Answer:

22 1/2

Step-by-step explanation:

try it

7 0

2 years ago

Read 2 more answers

Hunter is playing a video game where each round lasts ¾ of an hour. He has scheduled 3 hours to play video games. How many round

NemiM [27]

Answer:

45×4=180

this needs to be 20 characters long

3 0

2 years ago

Find the absolute maximum and minimum values of f(x,y)=xy−4x in the region bounded by the x-axis and the parabola y=16−x2.

skad [1K]

Answer:

The absolute maximum and minimum is $20\; \text{and} -20.$

Step-by-step explanation:

We first check the critical points on the interior of the domain using the

first derivative test.

$f_x=y-4=0$

$f_y=x=0$

The only solution to this system of equations is the point (0, 4), which lies in the domain.

$f_{xx}=0, \;f_{yy}=0\; \text{and}\; f_{xy}=-1$

$\Rightarrow f_{xx}f_{yy}-f_{xy}=o-1=-1$

$\therefore (0,4)$ is a saddle point.

Boundary points - $(4,0), (-4,0), (0,16)$

Along boundary $y=16-x^2$

$f=x(16-x^2)-4x$

$=16x-x^3-4x$

$\Rightarrow f^'=16-3x^2-4=0$

$\Rightarrow 3x^2=12$

$\Rightarrow x=\pm2,\;\;y=14$

Values of f(x) at these points.

$\begin{array}{}(4,0)=-16\\(-4,0)=16\\(0,16)=0\\(2,14)=20\\(-2,14)=-20\end{array}$

Therefore, the absolute maximum and minimum is $20\; \text{and} -20.$

6 0

2 years ago

A park has a length to width ratio of 7:4 and the perimeter of the park is 880 meters. What are the length and width of the park

Schach [20]

Step-by-step explanation:

Ratio of length to width = 7 : 4

length = 7x

width = 4x

7x + 4x = 11x

length = 880

$880 + 4x = 11x$

$880 = 11x - 4x$

$880 = 7x$

$\frac{880}{7} = x$

$125.71 = x$

width = 4x

= 4(125.71)

= 502.85

3 0

2 years ago