Ask question

Ask question

All categories

3 years ago

7

3x +y = 25 x + y =10

2 answers:

Sergeu [11.5K]3 years ago

8 0

Answer:

y= 28x

Step-by-step explanation:

3x + y - 25

y = 3x + 25

y = 28x

correct answer

Aloiza [94]3 years ago

3 0

Hello!
Here is the process and resultants of the problem. For smaller systems like this, it’s best to organize the first or second equations so that y or x equals a set of numbers, and then to implement that set into the other equation to solve for the specific value of y or x.

You might be interested in

How much would it coast for 4 sandwiches if any 3 were for 12 dollars

madam [21]

Answer:

36 dollars

Step-by-step explanation:

this is basic math just use multiplication i think u typed the problem whrong

4 0

3 years ago

Read 2 more answers

Given the equation y - 4 = (x + 8) in point-slope form, identify the equation of the same line in standard form.

yawa3891 [41]

Standard form
solve for y
y-4=x+8
add 4 to both sides
y=x+12

4 0

4 years ago

What is the answe for it?

sineoko [7]

Answer:

it mean

Step-by-step explanation:

asap skekdkdke

i am joking

3 0

3 years ago

Read 2 more answers

Which expression is a cube root of -1+i√3?

Tpy6a [65]

Answer:

<em>The correct option is C.</em>

Step-by-step explanation:

<u>Root Of Complex Numbers</u>

If a complex number is expressed in polar form as

$Z=(r,\theta)$

Then the cubic roots of Z are

$\displaystyle Z_1=\left(\sqrt[3]{r},\frac{\theta}{3}\right)$

$\displaystyle Z_2=\left(\sqrt[3]{r},\frac{\theta}{3}+120^o\right)$

$\displaystyle Z_3=\left(\sqrt[3]{r},\frac{\theta}{3}+240^o\right)$

We are given the complex number in rectangular components

$Z=-1+i\sqrt{3}$

Converting to polar form

$r=\sqrt{(-1)^2+(\sqrt{3})^2}=2$

$\displaystyle tan\theta=\frac{\sqrt{3}}{-1}=-\sqrt{3}$

It's located in the second quadrant, so

$\theta=120^o$

The number if polar form is

$Z=(2,120^o)$

Its cubic roots are

$\displaystyle Z_1=\left(\sqrt[3]{2},\frac{120^o}{3}\right)=\left(\sqrt[3]{2},40^o\right)$

$\displaystyle Z_2=\left(\sqrt[3]{2},40^o+120^o\right)=\left(\sqrt[3]{2},160^o\right)$

$\displaystyle Z_3=\left(\sqrt[3]{2},40^o+240^o\right)=\left(\sqrt[3]{2},280^o\right)$

Converting the first solution to rectangular coordinates

$z_1=\sqrt[3]{2}(\ cos40^o+i\ sin40^o)$

The correct option is C.

8 0

3 years ago

Complete the square 4y^2+x+8y+1=0

sammy [17]

Answer: Simple and best practice solution for 4y^2+8y+1=0 equation. ... Begin completing the square. ... Square it (1) and add it to both sides.

Step-by-step explanation: Complete the square for x2+2x x 2 + 2 x.

4 0

3 years ago