Solve and show all work: (−3)^2=

Write an expression for the sum of a and four

swat32

Answer:

a+4

Step-by-step explanation:

Expression means there are no equals signs

Sum means add

a+4

3 0

4 years ago

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7Bx%7D%20%2B1%7D%7Bx-%5Csqrt%7Bx%7D%20%2B1%7D" id="TexFormula1" title="\frac

zubka84 [21]

Answer:

Step-by-step explanation:

$\frac{\sqrt{x}+1 }{x-\sqrt{x}+1 }=\frac{\sqrt{x}+1}{(x+1)-\sqrt{x}}\\\\=\frac{(\sqrt{x}+1)([x+1]+\sqrt{x})}{([x+1]-\sqrt{x})+([x+1)+\sqrt{x}])}\\\\=\frac{\sqrt{x}*x+\sqrt{x}*1+\sqrt{x}*\sqrt{x}+1*x+1*1+1*\sqrt{x}}{(x+1)^{2}-(\sqrt{x})^{2}}\\\\\\=\frac{x\sqrt{x}+\sqrt{x}+x+1+x+\sqrt{x}}{x^{2}+2x+1-x}\\\\=\frac{x\sqrt{x}+2\sqrt{x}+2x+1}{x^{2}+x+1}\\\\$

8 0

3 years ago

Need help on this problem!

enyata [817]

Answer:

67

Step-by-step explanation:

56 87 76 9

4 0

3 years ago

A local children's theater sold tickets for their evening show at $5 for children and $15 for adults. For their afternoon matine

Oksanka [162]

The solution of the system of linear equations is $x = 50$ , $y = 20$ .

The point of intersection represents the solution found analytically and represents the scenario in which the <em>same</em> quantity of adults and children assisted to both shows.

<h2>Procedure - Determination of the number of people assisting to a movie</h2><h2 /><h3>Construction of the system of equations</h3><h3 />

In this question we need to construct a linear function for the total of people that assisted to the evening show and for the total of people that assisted to the afternoon matinee. The system of equations is described below:

Evening show

$5\cdot x + 15\cdot y = 550$ (1)

Afternoon matinee

$2\cdot x + 5\cdot y = 200$ (2)

Where:

$x$ - Number of children that assisted.
$y$ - Number of adults that assisted.

<h3>Resolution of the system of equations and analysis of the results</h3><h3 />

By algebraic means we find the following result associated with the system of equations:

$x = 50$ , $y = 20$ $\blacksquare$

The graphic representation of this system is described in the image attached below.

The point of intersection represents the solution found analytically and represents the scenario in which the <em>same</em> quantity of adults and children assisted to both shows. $\blacksquare$

To learn more on systems of linear equations, we kindly invite to check this verified question: brainly.com/question/20379472

5 0

3 years ago

ON THE SMARTBOARD, THE

RideAnS [48]

The length of rectangle is 105 cm and width is 98 cm.

Step-by-step explanation:

Given,

Perimeter of rectangle = 406 cm

Let,

w be the width of rectangle

Length of rectangle = w+7

We know that

Perimeter of rectangle = 2(Length + Width)

$406 = 2(w+7+w)\\406 = 2(2w+7)\\406 = 4w+14\\406-14 = 4w\\392=4w\\4w=392$

Dividing both sides by 4

$\frac{4w}{4}=\frac{392}{4}\\w=98$

Width of rectangle = 98 cm

Length of rectangle = 98+7 = 105 cm

The length of rectangle is 105 cm and width is 98 cm.

4 0

3 years ago