need help like every time :{

Answer:

F

Step-by-step explanation:

2x+y = -4

put into slope-intercept form: y = -2x - 4

-3y = 2x+12

In slope-intercept form: y = -⅔x - 4

Both equations have a y-intercept of -4. There is only one graph where both lines pass through (0,-4).

The solution of the given system of equation is (0, -4). Therefore, option A is the correct answer.

The given system of equations are 2x+y=-4 and -3y=2x+12.

A system of linear equations consists of two or more equations made up of two or more variables such that all equations in the system are considered simultaneously. The solution to a system of linear equations in two variables is any ordered pair that satisfies each equation independently.

The system of equations can be solved as follows:

Here, 2x+y=-4 ----------(1)

-3y=2x+12 ----------(2)

From equation(1), y=-4-2x

Now, put y=-4-2x in equation (2) and simplify

That is, -3(-4-2x)=2x+12

⇒ 12+6x=2x+12

⇒ 4x=0

⇒ x=0

Substitute x=0 in equation (2), we get

-3y=12

⇒ y=-4

The solution of the given system of equation is (0, -4). Therefore, option A is the correct answer.

To learn more about the linear system of an equations visit:

https://brainly.com/question/27664510.

#SPJ2

Answer:

x = 1; y = 2

Step-by-step explanation:

To find x:

Multiply (5x+y=7) by 3 to get the y's in both equation the same, and you will get 15x+3y=21.

Now the y's cancel out. Subtract the remaining equations: (15x=21) - (6x=12) and you get 9x = 9. Divide everything by 9 and you get x=1.

To find y:

You can substitute 1 for x in either equation. I will use (5x+y=7).

Substitute the 1 for x: 5(1)+y=7

Simplify: 5+y=7

Put like terms on the same side by subtracting 5 from both sides: y=2

Check:

6(1) + 3(2) = 12

6 + 6 = 12

12 = 12 - this is right

5(1) + (2) = 7

5 + 2 = 7

7 = 7 - this is right

Answer: 70 sorry if wrong

Step-by-step explanation:

Answer:

70°

Step-by-step explanation:

Hi!

So, according to the verticle angle theorem:

[tex]2x+50=7x[/tex]

Now just solve this equation

Same to both sides:

[tex]50=5x[/tex]

[tex]x=10[/tex]

Plug in numbers to 2x+50

[tex]2(10)+50[/tex]

[tex]20+50\\70[/tex]

Answer:

He is 15 years old.

Step-by-step explanation:

I hope this helps :)

Answer:

Artaud is 15 years old

Step-by-step explanation:

Imagine Artaud is x yearrs old.

Now, turning the words in the problem into math equations, we get:

-x + 42 = 27.

Solving for x, we get:

-x = -15

x = 15.

So, Artaud is 15 years old.

Answer:

3927

Step-by-step explanation:

This is the answer my teacher gave me, I promise.

The four-digit passcode is 3927 and this can be determined by using the given data and by using the hit and trial method.

Given :

Let the four digits passcode be 'abcd'. Then mathematical expression that represents "The second digit to the left is 3 times the first (left most) digit" is given below:

b = 3a   --- (1)

The mathematical expression that represents "the sum of the digits is 21" is given below:

a + b + c + d = 21    --- (2)

So, let a = 3, then b = 9, and the last two digits are 27. So, the number becomes 3927.

For more information, refer to the link given below:

https://brainly.com/question/25277954

Answer:

a- 15

Step-by-step explanation:

Answer:

a.) 15

b.) 180

c.) 2700

d.) 2700

Answer:

so basically I think it is

¾ = 75%  

x =    (¾)/75%   = (¾)/0.75     = 0.75/0.75    = 1

Step-by-step explanation:

if I am wrong I am so so very sorry

Answer:

Loss section

Step-by-step explanation:

Given

[tex]c = 20n + 500[/tex] -- cost

[tex]r = 25n[/tex] -- revenue

Required

Determine where n = 150 is

To do this, we substitute 150 for n in the given functions

[tex]c = 20n + 500[/tex]

[tex]c = 20 * 150 + 500[/tex]

[tex]c = 3500[/tex]

[tex]r = 25n[/tex]

[tex]r = 25 * 150[/tex]

[tex]r = 3750[/tex]

The above shows that the revenue is greater than cost for n = 150.

This implies that, n = 15o is the loss section.

Answer: profit section :)

Answer:

0.52014035087

Step-by-step explanation:

Answer:

0.51868439468

Step-by-step explanation:

Answer:

t₃ = 3

Step-by-step explanation:

To find the third term substitute n = 3 into the formula, that is

t₃ = 3² - 2(3) = 9 - 6 = 3

Answer:

tn=n^2-2n

n =3

t3 = 3^2 -2(3)

t3 = 9-6

t3 = 3

Answer:

Basically it just means that you are trying to spend money that you don't have on things you don't need.

Step-by-step explanation:

Taken literally, you can live in a pretty small house and be content. You don;t need to spend tons of money to be happy. This can be a bad thing to do because you don't want to be in debt to anyone, especially when that could have been avoided.

Answer:

x - 4 _< 6

Step-by-step explanation:

Answer:

8*7/4=7x

56/4=7x

14=7x

x=2

Step-by-step explanation:

Answer:

[tex] \huge \boxed{ \boxed{ \sf \: \frac{1}{2} }}[/tex]

Step-by-step explanation:

let width be w

according to the question

the equation is

[tex] \sf \frac{9}{10 } \times w = \frac{9}{20} [/tex]

let's figure out the equation

Answer:

The top one

Step-by-step explanation:

Answer:

Apologies, but you need to tell me the initial deposit amount in order to solve this.

Step-by-step explanation:

;-; mark brainliest to make you feel better

Answer:$50

Step-by-step explanation:

Using the function concept, it is found that [tex]x^2 + y^2 = 100[/tex] is not a function, as for each value of x there is more than one corresponding value of y.

In this problem, the relation is:

[tex]x^2 + y^2 = 100[/tex]

For example, considering x = 0, the corresponding values of y are:

[tex]0^2 + y^2 = 100[/tex]

[tex]y = \pm \sqrt{100}[/tex]

[tex]y = \pm 10[/tex]

Hence, it is not a function, as for each value of x there is more than one corresponding value of y.

To learn more about the function concept, you can take a look at

Answer:

x = -4

y = 1

Step-by-step explanation:

For the "How do you know?" part, substitute the x and y values into one the original equations and check to see if it's true

Answer:

Step-by-step explanation:

Not sure what the question is here.

L = W-8

Perimeter = 2L + 2W = 44

L+W = 22

(W-8)+ W = 22

W = 15 ft

L = 7 ft

9514 1404 393

Answer:

  (x, y, z) = ((7 -2k)/(-31 +7k), (-29 +7k)/(-31 +7k), 1/(31 -7k))

Step-by-step explanation:

The system can be solved by any of your favorite methods. Treat k as you would any number.

My row reduction software says the solution is ...

  (x, y, z) = ((7 -2k)/(-31 +7k), (-29 +7k)/(-31 +7k), 1/(31 -7k))

__

Clearly, k ≠ 31/7.

The augmented coefficient matrix is attached.

Answer:

A

B

C

E

Step-by-step explanation:

Answer: A, C, E, B I think im PRETTY sure im correct. Maybe 100% sure :)

Answer:

Single increase rate = 29.47%

Step-by-step explanation:

Given:

First increase rate = 7%

Second increase rate = 21%

Find:

Single increase rate

Computation:

Assume number is a

So,

First increase rate = 7%

a + 7%

= 1.07a

Second increase rate = 21%

1.07a + 21%

1.2947a

So,

Single increase rate = 1.2947 - 1

Single increase rate = 0.2947

Single increase rate = 29.47%

Answer:

2 csc^2 x

Step-by-step explanation:

using a common denominator, that is

((1+cosx)+(1-cosx))/(1-cos^2c) = 2/sin^2x

Answer:

sin^2x

Step-by-step explanation:

(1+cosx)(1-cosx)

Difference of squares

1-cos^x

Pythagorean identity

sin^2x

Answer:

12x +60

Step-by-step explanation:

c

d

Answer:

80 minutes

Step-by-step explanation:

On your graph it says each mile takes 10 minutes. 8 miles take 80 minutes.

Answer:

no you need about 4.2 cups for a liter

Step-by-step explanation:

The slope is -2.

The slope is the rise over the run. Because the line goes down from left to right, it makes the value negative. For every one the it moves to the right, the line goes down two units.

Answer:

Your answer is A

Step-by-step explanation:

I hope I helped :)