All categories

3 years ago

Simple show work for brainlist

Mathematics

1 answer:

shtirl [24]3 years ago

7 0

Answer:

yes

(1,2)

(2,1)

Step-by-step explanation:

You might be interested in

Homework: 5.1 Systems of Linear Equations

Klio2033 [76]

Answer:

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$x=8,\:y=5$

Step-by-step explanation:

Given the system of linear equations

$7x-y=51$

$x+3y=23$

solving by the elimination method

$\begin{bmatrix}7x-y=51\\ x+3y=23\end{bmatrix}$

$\mathrm{Multiply\:}x+3y=23\mathrm{\:by\:}7\:\mathrm{:}\:\quad \:7x+21y=161$

$\begin{bmatrix}7x-y=51\\ 7x+21y=161\end{bmatrix}$

$7x+21y=161$

$-$

$\underline{7x-y=51}$

$22y=110$

$\begin{bmatrix}7x-y=51\\ 22y=110\end{bmatrix}$

now solving for y

$22y=110$

$\mathrm{Divide\:both\:sides\:by\:}22$

$\frac{22y}{22}=\frac{110}{22}$

$y=5$

$\mathrm{For\:}7x-y=51\mathrm{\:plug\:in\:}y=5$

$7x-y=51$

$7x-5=5$

$7x=56$

$\mathrm{Divide\:both\:sides\:by\:}7$

$\frac{7x}{7}=\frac{56}{7}$

$x=8$

$\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}$

$x=8,\:y=5$

7 0

3 years ago

A regular hexagon is drawn inside of a circle so that each of its vertices touches the circle. the diameter of the circle is 4 c

LenKa [72]

The length of the circumference is (being $d$ the diameter, and using 3.14 for $\pi$ ):

$L = 2 \cdot r \cdot \pi = d \cdot \pi = 4 \cdot \pi \text{ cm} = 12.56 \text{ cm}$

The perimeter of the hexagon is 12 cm.

Hence, the circumference is 0.56 cm longer than the perimeter of the hexagon.

5 0

3 years ago

What is 1/4 X 5/16 equal

VashaNatasha [74]

$\frac{1}{4}$ x $\frac{5}{16}$

1 x 5 = 5
16 x 4 = 64

$\frac{5}{64}$ is the answer

In simplest form the answer would be $\frac{5}{64}$ because it cant be divided any farther.

6 0

4 years ago

Read 2 more answers

Jarell Tarver purchased a $2,000.00 bond at the quoted price of 75 1/2. The bond paid 2 interest at a rate of 6 percent. What is

kirill [66]

45 percent long-standing

8 0

3 years ago

the radius of s cylinder is 3x-2cm the height of the cylinder is x+3 cm what is the surface area of the cylinder

Mashcka [7]

If you picture a cylinder rolled out flat. there would be two circles for top and bottom and then a rectangle for the side. The rectangle would have width equal to height and length equal to circumference.

So then the areas of the pieces are added together to get total surface area.

= 2pi(3x-2)^2 + 2pi(3x-2)(x+3)

and you can simplify this is you want by multiplying through and combining like terms.

= 2pi(12x^2 - 5x -2)

or factor more to simplify the solution.

= 2pi(3x-2)(3x-2+x+3)
= 2pi(3x-2)(4x+1)

5 0

4 years ago