Help me to do this problem System by sustitution.
4) y = -3x - 7
-6x - 2y = 14​

Answers

Answer 1

Answer:

The system of equations has infinite solutions

Step-by-step explanation:

y = -3x - 7 ⇒ (1)

-6x - 2y = 14 ⇒ (2)

→ Substitute y in equation (2) by equation (1)

∴ -6x - 2(-3x - 7) = 14

→ Simplify the left side

∵ -6x - 2(-3x) - 2(-7) = 14

-6x + 6x + 14 = 14

→ Add the like terms in the left side

∵ (-6x + 6x) + 14 = 14

∴ 0 + 14 = 14

14 = 14

∵ The variable is disappeared and the two sides of the equation equal

∴ The equation has many solutions

→ That means x and y can be any numbers

The system of equations has infinite solutions


Related Questions

Simplify the below question.

Please send the answer with correct explanation.

Answers

Answer:

48t^4

Step-by-step explanation:

First you simplify and cross out all the uneeded characters because this is a division equation

Then whatever is left you calculate it

Answer:

[tex]48t^{4}[/tex]

Step-by-step explanation:

[tex]\frac{3^{3}*8t^{3}*32}{9t^{-2}*16t}=\frac{3^{3}*8*32*t^{3}}{9*16*t^{-2+1}}\\\\=\frac{3*1*32*t^{3}}{1*2*t^{-1}}\\\\= \frac{3*16*t^{3}}{t^{-1}}\\\\= 48t^{3}*t^{1}\\\\= 48*t^{3+1}\\\\=48t^{4}[/tex]

HINT:

[tex]a^{m}*a^{n}=a^{m+n}\\\\\\\frac{1}{a^{-m}}=a^{m}[/tex]

What is the exact solution to the equation 4^5x=3^(x-2)
list the steps to get the answer

Answers

Answer: x = -0.377

Step-by-step explanation:

We have the equation:

4^(5*x) = 3^(x - 2)

Now we can use the fact that:

Ln(A^x) = x*Ln(A)

Then we can apply Ln(.) to both sides of the equation to get:

Ln(4^(5*x)) = Ln(3^(x - 2))

(5*x)*Ln(4) = (x - 2)*Ln(3)

(5*x)*Ln(4) - x*Ln(3) = -2*Ln(3)

x*(5*Ln(4) - Ln(3)) = -2*Ln(3)

x = -2*Ln(3)/(5*Ln(4) - Ln(3)) = -0.377

Variable on both sides
John will rent a car for the weekend. He can choose one of two plans. The first plan has an initial fee of $57.96 and costs an additional $0.12 per mile driven.
The second plan has an initial fee of $47.96 and costs an additional $0.16 per mile driven. How many miles would John need to drive for the two plans to cost
the same?
II miles
Х
?

Answers

So for starts we can go 0.16 x 63 miles = 10.04 so the total for the second plan would be $58 with driving 63 miles. and for the first plan would be 0.12 divided by 3 would be 0.04 so we add them together and we get $58 with driving a 3rd of a mile.

Overall:

1st plan: $58 with driving a 3rd of a mile.

2nd plan: $58 with driving 63 miles.

Please help, I am bad at math and I don't know how to answer this question please help

How is solving equations with fractions similar to solving equations with whole numbers?

(Written Response)
(Sorry if this is easy, if you have already done this on edg, I don't mind if it is the sample response)

Answers

Answer:

You have to make the fraction into a whole number.

Step-by-step explanation:

Hope this helps. :)

How many solutions does 7x -10 = 7(x+3)

Answers

Answer: The answer to this question is that there is no solution to that problem

Step-by-step explanation:

if you help me with this , you're a life saver

Answers

Step-by-step explanation:

sin0° = cos90°

sin30° = cos60°

sin45° = cos45°

sin60° = cos30°

sin90° = cos0°

Johnny's Towing Company charges a one-time towing fee of $50, plus $20 per day
that they keep each car.
If Johnny changes his one-time towing fee to $75, describe how the graph of his
function would change.

Answers

The slope is curved

please solve due soon

Answers

The correct answer would be 5 because if x=0 then 5 0 times would just be zero

Answer:

5

Step-by-step explanation:

5+5(0)

ILL MARK U BRAINLIEST HELP

Answers

Answer:

6x-y

Step-by-step explanation:

Add the two expressions

Answer:

6x + -y

Lets simplify this step by step:

2x + 7y + 4x −8y

2x + 7y + 4x + −8y

Then we combine like terms

=2x + 7y + 4x + −8y

=(2x + 4x) + (7y + −8y)

= 6x + −y

Solve the equation 2 + 4.7 = -9.3.

Answers

Answer: positive then greater than

Step-by-step explanation:

2 + 4.7 = 6.7
Therefore, the it is a positive number that is greater than -9.3.

Can Someone plz help me i will mark brainliest

Answers

Answer:

a

Step-by-step explanation:

if u multiply by -5 the 5s will cancel out

Answer:

c

Step-by-step explanation:

sorry if it wrong

there are 40 boys and 20 girls at the party 35% from boys wearing glasses and 60% girls wearing how many people wearing glasses glasses

Answers

Answer:

12 g 14 b

Step-by-step explanation:

.

16(x+3)=4(x+9)
solve for x​

Answers

Respuesta :

Ecuación : 16 (x + 3) = 4 (x + 9)

Resolvemos :

  [tex]16(x+3)=4(x+9)\\16x+48=4x+36\\16x-4x=36-48\\12x=-12\\x=-12/12\\\\\boxed{x=-1}[/tex]

Explicación paso a paso :

        16 (x + 3) = 4 (x + 9)

Multiplicamos los paréntesis "16(x+3)" y "4(x+9)"

        16x + 48 = 4x + 36

Términos semejantes ...

        16x - 4x = 36 - 48

Restamos respectivamente ...

        12x = -12

El número 12 multiplicando a "x" pasa a dividir...

        x = -12 ÷ 12

Dividimos y ya tenemos el resultado!! ^-^      x = -1

Ver mas ejemplos : brainly.lat/tarea/29507142

i have to find the area of the shaded region. please helppp!!!!! xksnkskzks

Answers

Answer:

9.53 cm2

Step-by-step explanation:

hope it helps

Here is the solution:

What is the point-slope form of an equation passing through (0, -5) with a 5 points
slope of 2? *

Answers

Answer:

y=2x-5

Step-by-step explanation:

[tex]y-y_{1}=m(x-x_{1})[/tex]

[tex]x_{1}=0, y_{1}=-5\\[/tex], and m=2

[tex]y-(-5)=2(x-0)[/tex], -(-5)-Two negatives make it positive, and you distribute the 2

[tex]y+5=2x[/tex], you now subtract 5 to get y by itself to get your answer of

[tex]y=2x-5[/tex]

*NOTE* (0,-5) is the y-intercept, so you could have used the linear equation of y=mx+b, m=2, and b(y-intercept)=-5

giving you y=2x-5

please help!! i’ll mark brainliest!!!!

Answers

Answer:

x^2+11x+30

Step-by-step explanation:

15 POINTS PLEASE HELP!

Answers

Answer:

buddy...u weren't able to attach it properly...

Step-by-step explanation:

u may type it out in the comments...

how can we use a number line to help calculate elapsed time

Answers

i’m not 100% sure but i think by what i learned that you would use a number line to measure to the number than the closest number of the time your looking for would be looking for.

The graph shows a line and two similar triangles. On a coordinate plane, a line goes through (0, 3) and (6, 11). A small triangle has a rise of 4 and run of 3. What is the equation of the line? y = 3 x + 3 y = three-fourths x + 3 y = four-thirds x + 3 y = 4 x + 3

Answers

Answer:

i think that the answer is the first equation

Step-by-step explanation:

The equation of the line passing through the points (0, 3) and (6, 11) is:

y = (4/3)x + 3.

Option C is the correct answer.

What is an equation of a line?

The equation of a line is given by:

y = mx + c

where m is the slope of the line and c is the y-intercept.

Example:

The slope of the line y = 2x + 3 is 2.

The slope of a line that passes through (1, 2) and (2, 3) is 1.

We have,

To find the equation of the line passing through the points (0, 3) and (6, 11).

We can use the slope-intercept form of a linear equation,

which is y = mx + b, where m is the slope of the line and b is the y-intercept.

First, we can find the slope of the line by using the formula:

[tex]m = (y_2 - y_1) / (x_2 - x_1)[/tex]

where

[tex](x_1, y_1) = (0, 3)\\(x_2, y_2) = (6, 11).[/tex]

So,

m = (11 - 3) / (6 - 0) = 8/6 = 4/3

The slope of the line is 4/3.

Next,

We can use the point-slope form of a linear equation to write the equation of the line in terms of one of the points and the slope:

[tex]y - y_1 = m(x - x_1)[/tex]

Choosing the point (0, 3), we get:

y - 3 = (4/3)(x - 0)

Simplifying and solving for y, we get:

y = (4/3)x + 3

Therefore,

The equation of the line passing through the points (0, 3) and (6, 11) is:

y = (4/3)x + 3.

Learn more about equation of a line here:

https://brainly.com/question/23087740

#SPJ3



y=2x−1
5x−4y=1


Is (1,1) a solution of system

A.Yes
B.No

Answers

Yes this is the answer

what do i say for this
please help :((((

Answers

Answer:

Step-by-step explanation:

Error 1) It should be divided by 5.

x - 5 = 0

x = 5

Error 2) -3   15   0    -1     5

coefficient of x² is 0 and it is not included

Consider these functions:
f(x)=3x - 7
g(t)=1+1
What is the value of f(g(3))?
A.-1

B.0

C.3

D. 5

Answers

Answer:

A(-1)

Step-by-step explanation:

First, we will replace any x in g(x) with 3

g(x)=(3+1)/(3-1)=4/2=2

Thwn replace any x in f(x) with 2

f(x)=3(2)-7=6-7=-1 ⇒A

hope this helps

How do I do this?
.
.

Answers

Answer:

the answer is 4 i believe

Step-by-step explanation:

microzooplankton is _____ compared to macrozooplankton

a) smaller
b) bigger
c) faster
d) brighter in color

btw yes i put it on math because i feel like more people do math more

Answers

a ) smaller is correct answer

Describe the end behavior of the polynomial function.

Answers

Rises to the left and rises to the right

For which value of a are the graphs of 4 = 3x + 6y and ax – 8y = 12 parallel?
a = -4
O a =
= - 1 / 1
a = 1/2
O
a = 2

Answers

Answer: a=-4

Step-by-step explanation:

Y+4=2(x+3) In slope-intercept form

Answers

Y=2x+2 this is the answer hope this helps
Answer: y =  m x  +  b . Y  =  2 x  +  2______________________________________Hope this helps!

Also can I please have Brainliest?

Only if I'm correct of course.

Your welcome, Loves!

lus
If f(x) = 3x + 7, find:
f(3) = [?]

Answers

Answer:

The answer is 16

Step-by-step explanation:

You substitute 3 in for x.

How many triangles in a 15 sides polygon ?

Answers

I believe the answer is 13
Sorry if that’s wrong I truly tried!!! Please mark brandies the if correct though

all my points! PLZ help me on this and explain ur answer plzz

Answers

It’s already answered in the other post and sorry if I didn’t answer in this post
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