solve the system of equations.

Solve The System Of Equations.

Answers

Answer 1
I would use elimination
2x+3y = 7
2x-y = -5
Subtract those equations
4y = 12
Y = 3
Now plug in 3 for any y value
2x - 3 = -5
2x = -2
X = -1, y = 3
Answer 2

Answer:

y=3, x=-1

Step-by-step explanation:

(2x+3y)-(2x-y)=7-(-5)

4y=12

y=3

2x+3y=7

2x=7-9

x=-1

PLS GIVE BRAINLIEST


Related Questions

what is 1/2 take away briefly what is 1/2 take away 3/8 ​

Answers

Answer:

3/16

Step-by-step explanation:

so since there isnt a half of 3/8 we would multiply the number x2 so the number is 6/16 and half of that is 3/16 becuase 6 can be split in half

enter your answer as a simplified fraction formatted like this: 42/53



the answer on there is wrong

Answers

Answer:

[tex]\displaystyle -0.\overline{37}=-\frac{37}{99}[/tex]

Step-by-step explanation:

Convert a Repeating Decimal to a Fraction

We need to convert the following decimal to a fraction:

[tex]-0.\overline{37}[/tex]

Let's call x to the given number:

[tex]x=-0.\overline{37}[/tex]

The number has two repeating (periodic) decimals, thus we multiply by 100:

[tex]100x=-37.\overline{37}[/tex]

Note the decimals continue to repeat exactly like the original number.

Subtracting both expressións, the repeating decimals are simplified:

[tex]100x - x = -37[/tex]

Operating:

99x=-37

Dividing by 99:

[tex]\displaystyle x=-\frac{37}{99}[/tex]

The fraction cannot be simplified, thus:

[tex]\mathbf{\displaystyle -0.\overline{37}=-\frac{37}{99}}[/tex]

Would the answer of
-9/16+9/8
Be positive or negative? Explain why or why not.

This is a personal question!

Answers

Answer:

It would be positive

Step-by-step explanation:

To do anything with fractions you need to find a common denominator, in this case lets say its 128. the 9 in the negative side would need to be multiplied by 8 like it's denominator making it 72. You would do the same to the other fraction giving you the fractions -72/128 and 144/128 from here you add to get 72/128 which is positive

Answer:

positive

Step-by-step explanation:

-9/16= -0.5625

9/8= 1.125

-9/16+9/8= -0.5625 + 1.125(in the addition of opposite signs u should figure out the largest num and should substract the other numa nd assign the sign of the biggest nym)

              =0.5625

  the reason

             + * + = +

              - * - = +                                              

              + * - = -

              +/+ =+

              - / - = -

              -/ + = -

              + / - = -

What is the value of x in the equation below?
10
T =
3
A 2
B.
C 5
10

Answers

Answer: i think it’s C
2/3x = 10/3

2x = 10/3 * 3 multiply both sides by 3

x = 10/2 divide both sides by 2

x = 5 is your answer :)

The volume V (in cubic feet) of a rectangular room can be modeled by V(x)= 2x^3-14x^2+12x, where x is the length (in feet) if the room. Factor the function. Use your factorization to determined the values of x for which the model makes sense

Answers

Answer:

The values of x for which the model makes sense is [tex]x\ge 6\,ft[/tex].

Step-by-step explanation:

From statement we have the following expression for the volume of the rectangular room is:

[tex]V(x) = 2\cdot x^{3}-14\cdot x^{2}+12\cdot x[/tex] (1)

Where:

[tex]V[/tex] - Volume of the rectangular room, measured in cubic feet.

[tex]x[/tex] - Length of the room, measured in feet.

By Algebraic means we factorize the polynomial:

[tex]V(x) = x\cdot (2\cdot x^{2}-14\cdot x +12)[/tex]

[tex]V(x) = x\cdot (x-6)\cdot (x-1)[/tex]

Given that both volume and length must be positive variables, then the following conditions must be satisfied:

[tex]x \ge 0\,ft\,\land\,x\ge 6\,ft\,\land\,x\ge 1\,ft[/tex]

Then, the values of x for which the model makes sense is [tex]x\ge 6\,ft[/tex].

8
Solve each of the equations below and classify them based on their solution.
DRAG & DROP THE ANSWER
No Solution
-82-30 = -112
One Solution
by = -6y - 12
-32 = 8 - 2
- 5n = 3 - 5n
Infinitely many Solution
SHOW HINT

Answers

Answer:

is this helpful or do i need to add more because this is all i could figure out :/

Step-by-step explanation:

one solution = -82 - 30=- 112

many solution = 6y - 12

no solution = -5n = 3 - 5n

infinite solution = -32 = 8 - 2

hope this helps

⚠️⚠️WHATS THE EQUATIONS (Y=Mx+B)⚠️⚠️

Answers

Answer:

Y=-5/4+20

Step-by-step explanation:

8. What is the solution of the equation 4x + 12 = 48 ?
a) x= 9
b) x= 15
c) x= 144
d) x= 240

Answers

Answer:

A) x=9

Step-by-step explanation:

48-12=36.

36/4=9

More detailed explanation:

4x+12=48

    -12    -12

     4x = 36

     /4     /4

     x   =    9

The solution of the equation is, x = 9.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

We have to given that;

The equation is,

⇒ 4x + 12 = 48

Now, We can solve the equation for value of x as;

⇒ 4x + 12 = 48

Subtract 12 both side, we get;

⇒ 4x + 12 - 12 = 48 - 12

⇒ 4x = 36

Divide by 4;

⇒ 4x/4 = 36/4

⇒ x = 9

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ5

15 (x – 1) + 4 ( x + 3 ) = 2 ( x + 9) + 4

Answers

Answer:

x=1.47

Step-by-step explanation:

15(x-1)+4(x+3)=2(x+9)+4

15x-15+4x+12=2x+18+4

19x-3=2x+22

17x=25

x=25/17

x=1.47

x=1.47

hope this helps

I don't know who you are . . but God bless you! Your are worth everything! And your VERY talented! YOU deserve to live! Have a great day/night!!! And HAPPY EARLER TURKEY DAY!!!! :D answer this with something random!! That would make my day lol

Answers

bless your soul — and happy early turkey dayy!

Answer:

Thank you I needed this today *smiles*

Step-by-step explanation:

is anybody good at biology/chemistry and could help me??

Answers

Answer:

whats the question?

Step-by-step explanation:

Answer:

Yes! I can help you!

Step-by-step explanation:

Where is the question?

P(A)=0.42, P(B)=0.23 and P(A and B)=0.50, find P(A andB)

Answers

Answer:

0.52=0.42+0.23-P(A and B)

P(A and B)=0.13.

Step-by-step explanation:

If this is right, please rate. Im sure its right though.

Which point is on the graph of f(x)= 5^x

A. (1, 5)
B. (0, 0)
C. (5, 1)
D. (0, 5)

Answers

Answer:

B

beacuse f and x are f  -5 and x   5

PLS HELP IM FAILING MY MATH CLASS

Answers

B

Look at the pattern, they all go up by 0.5
For example, 0.5+0.5=1.0, and so fourth

Have a great day!

Can someone please help me cause i am so confused

Answers

Answer:

Ya dig?

Step-by-step explanation: You gon choose me baby.

Someone please help me out with this

Answers

Pick a point and form a triangle then use gradient = rise divided by run . Then use the equation of a line y=mx+c and m is the gradient and c is the y intercept !!!

Two manufacturing teams are producing light bulbs. The tables show their production over 5 days. Team Red Production Team Blue Production Day Total Day Total 1 5 1 5 2 10 2 10 3 12 3 15 4 14 4 20 5 25 5 25 Which team has a constant rate of change? Explain your answer.

Answers

Answer:

Team Blue

Step-by-step explanation:

The reason this is, is because for each day that passes, they make 5 more light bulbs. This is in relation to the days that pass.

Please help me with this

Answers

Answer:

(0, 4)

Step-by-step explanation:

Take a look on the Y axis. (line where it has Y on the top, Runs up and down).

It's asking which coordinates are placed on it. So, It would be (0, 4)

Answer:

The correct answer is D

Step-by-step explanation:

the x coordinate is 0 and the y coordinate is 4

Please need help ASAP I will give brainliest

Answers

Answer:

for number 4 i think it is option 3

how do you factor 18x^2-18x-5?

Answers

Answer:

This expresion is not factorable. If you have any questions, please ask me!

Can som help plzzzzzzz

Answers

I cant really see it can u type the equation?

3x -2 > -11

(The > has an underscore under it)

Answers

[tex]3x-2\geq-11[/tex]

[tex]3x\geq-9[/tex]

[tex]x\geq-3[/tex]

[tex]x\in[-3, \infty)[/tex]

Hope this helps.

Which of the following expressions represents the product of a number and eight"?
8 x
8- X
X-8
X + 8

Answers

8x because everything else is addition or subtractionZ

Answer:

8x

Step-by-step explanation:

20 points and brainliest answer for correct answer. Photo above. Due by 9:45 today! Hi

Answers

Answer:

146 square meters

Step-by-step explanation:

We can split the figure into a 6 by 15 rectangle and a parallelogram (8 base, 7 height).

The area of the rectangle is 6•15=90The area of the parallelogram is 8•7=5690+56=146

Is 90 a perfect cube

Answers

Answer:

No, the first ten perfect cubes are 1, 8, 27, 64, 125, 216, 343, 512, 729 and 1000.

NEED HELP ASAP, WILL MARK BRAINLIEST!!!

Answers

Answer:

7. -

a. 3.5 or 7/2 hours

b. 24.5

c. After 7 hours (and at the beginning when t=0)

8. -

a. 4 seconds

b. 1 second

c. 54 meters

Step-by-step explanation:

7. M(t)=-2t^2+14t

M’(t)=-4t+14

a)

-4t+14=0

4t=14

2t=7

t=7/2

b) M(7/2)=24.5

c)

M(t)=0

-2t^2+14t=0

t^2-7t=0

t(t-7)=0

t=0, 7

8.

a)

h(t)=0

-6t^2+12t+48=0

t^2-2t-8=0

(t-4)(t+2)=0

t=-2, 4

t=4

b)

h(t)=-6t^2+12t+48

h’(t)=-12t+12

h’(t)=0

-12t+12=0

12t=12

t=1

c) h(1)=54

I hope this helps; please vote brainliest!

I will give brainliest!!!

Answer two questions about Equations A and B:


A.​ 5 = -2 (x - 1)


B. 5 = -2x + 2


1) How can we get Equation B from Equation A?


Choose 1 answer:


(Choice A) Rewrite one side (or both) by combining like terms


(Choice B) Rewrite one side (or both) using the distributive property


(Choice C) Multiply/divide both sides by the same non-zero constant


(Choice D) Multiply/divide both sides by the same variable expression


2) Based on the previous answer, are the equations equivalent? In other words, do they have the same solution?


Choose 1 answer:


(Choice A) Yes


(Choice B) No

Answers

Choice B! The equations are also equivalent because when A is simplified it’s the same equation as B

would you rather have an airbag that stopped your head in 0.25 seconds or in 0.50 seconds and why​

Answers

Answer:

I would rather have it stop at 0.50 seconds.

Step-by-step explanation:

I would rather have it stop at 0.50 seconds. So I can have time to get over my nervous.

help i need help with this question.

Answers

Umm where’s the question cause that’s just a picture

NEED ASAP! Easy question just need verification!

What is f(x)=|x| when it is vertically scaled by a factor of 4, reflection in the y axis, and translated 7 units up and 1 unit to the right?

Answers

Answer:

(1,3)

Step-by-step explanation:

starting at (0,0)

vertically scaled by 4 - go up four (0,4)

reflected on y axis - negative the four (0,-4)

translated 1 to the right and 7 up - go up 7 and to the right 1 (1,3)

hope this helps :)

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