solve system of equations:

-2x + y = 5
-4x + 3y = 7

Answers

Answer 1

answer:

(x,y)=( -4, -3)

Solve System Of Equations:-2x + Y = 5-4x + 3y = 7
Answer 2

Answer:

{x,y}={-4,-3}

Step-by-step explanation:

// Solve equation [1] for the variable  y

 [1]    y = 2x + 5

// Plug this in for variable  y  in equation [2]

  [2]    -4x + 3•(2x+5) = 7

  [2]    2x = -8

// Solve equation [2] for the variable  x

  [2]    2x = - 8

  [2]    x = - 4

// By now we know this much :

   x = -4

   y = 2x+5

// Use the  x  value to solve for  y

   y = 2(-4)+5 = -3

Solution :

{x,y} = {-4,-3}

pls, mark me as brainiest!


Related Questions

aira needs 1/4 cup ice cream and 2/3 cup root beer to make a rootbeer float. she is using one measuring cup. how can she write 1/4 and ⅔ as a pair of fractions with a common denominator to fond out which measure cup to use

Answers

Answer:

11/12

Step-by-step explanation:

the common denominator between 4 and 3 is 12 because it is the smallest shared factor. as for what cup they would use for 11/12 beats me lol

11/12 because i look at the answer the other dude gave and decided that this is probably the answer. Have a good day.

Two angles form a linear pair. The measure of one of the angles is 62º.

What is the measure of the other angle in the linear pair?
[A] 118
[B] 62
[C] 28
[D] I don't know.

What is the value of x in this figure?
[A] x = 23
[B] x = 67
[C] x = 113
[D] I don't know.

What is the relationship between ∠AXE and ∠EXD in this figure?
[A] Complementary angles.
[B] Supplementary angles.
[C] Neither complementary nor supplementary angles.
[D] I don't know.

Answers

Answer:

the answer to the first one is 118 the value of x is 113

Step-by-step explanation:

SOMEONE DELETED MY ORIGINAL ANSWER

The two angles will be linear pairs if the sum is 180° therefore,linear pair of 62° is 118° so option [A] is correct.

The value of x in the figure is 113° so option [C] is correct.

The m∠EXD and m∠AXE are the supplementary angles so option (B) is correct.

What is an angle?

An angle is a geometry in plane geometry that is created by 2 rays or lines that have an identical terminus.

The identical endpoint of the two rays—known as the vertex—is referenced as an angle's sides.

01)

Two angles will be linear pairs if their sum is 180°.

If the first angle is 62° then the second will be 180° - 62° = 118°

Hence "The two angles will be linear pairs if the sum is 180° therefore, linear pair of 62° is 118°".

02)

The angle x is in the same line with supplementary angle 67° so

x = 180 - 67 = 113°.

Hence "The value of x in the figure is 113°".

03)

In the figure, AXD is a straight line, therefore,

m∠EXD +  m∠AXE  = 180°

Since the sum of two angles is 180° then they are called supplementary angles.

Hence "The m∠EXD and m∠AXE are the supplementary angles".

For more about the angle,

brainly.com/question/13954458

#SPJ5

Help, please!! Geometry- I have no idea what it's asking and how to solve it.

Answers

Calculate distances

√(a+a)^2=2a√(-a+a)^2+(-2b)^2=2b√(a+a)^2=2a√2b^2=2b

As

2a=2a2b=2b

Opposite sides are equal so it's rectangle

Sorry about all the writing, I was trying to solve it.

Answers

Answer:

Option C

Step-by-step explanation:

5
In which of the following are the numbers in order from least to
greatest?
a. 0.5, 0.25,,2,3
b. 0.25, 0.5, }, 2, 3
5
3
c. 0.25, 0.5, 1, 2,2
d. 0.25, į, },0.5,2
5
3
5
2
5
5 3
225

Answers

Answer:

B

Step-by-step explanation:

hope this helps

Answer:

the answer is 0.25,0.5,1,2,2

Express the area of the triangle as a monomial.

Answers

Answer:

20 [tex]x^{4}[/tex] [tex]y^{6}[/tex]

Step-by-step explanation:

A = [tex]\frac{1}{2}[/tex] ( 5 x³ [tex]y^{4}[/tex] )( 8 x y² ) = 20 [tex]x^{4}[/tex] [tex]y^{6}[/tex]

Answer: 20x^4y^6
———————————
Shape: Triangle
Formula: A = 1/2bh
———————————
A = 1/2bh
A = 1/2(5x^3y^4)(8xy^2)
A = 1/2(40x^4y^6)
A = 20x^4y^6

A globe has a diameter of 22 in. What is the best approximation for the volume of this globe? 14,197. 33 in³ 5572. 45 in³ 1774. 67 in³ 379. 94 in³.

Answers

Answer:

5572.45

Step-by-step explanation:

the formula to calculate the colume of a sphere is (4/3)πr², where r is the radius of the sphere.

to find r (radius):

- divide the diameter by 2 because d = 2r, where d is the diameter and r is the radius

r = 22/2

= 11 in

to find volume of the globe:

- substitute r = 11 into (4/3)πr³

v = (4/3)π(11)³

= 5324π/3

≈ 5575.27976 in³

hence, the best approximation of the globe is 5572.45 in³.

Find the value of each variable. Help asappppp

Answers

Answer:

Y= 20

Z = 20

Step-by-step explanation:

Y:

cos(∠BAC) = [tex]\frac{AC}{AB}[/tex]

cos(45°) = [tex]\frac{y}{20\sqrt{2}}[/tex]

Y= 20

Z:

sin(∠BAC) = [tex]\frac{BC}{AB}[/tex]

sin(45°) = [tex]\frac{z}{20\sqrt{2}}[/tex]

z = 20

Help with both problems please! no links no files

Answers

Answer:

Question 8:

2(12x+9y)

Question 9:

2(x+3)+2

Step-by-step explanation:

I hope this helps

can you help me with this please 2+6f–2+10f

Answers

The answer is just 16f.
You just combine the like terms (2,-2) and (6f+10f) and get the answer.

simplify, please help its due in a few hours TvT

Answers

Answer:

Step-by-step explanation:

Using the rules of exponents

[tex]a^{m}[/tex] × [tex]a^{n}[/tex] = [tex]a^{(m +n)}[/tex]

[tex](a^m)^{n}[/tex] = [tex]a^{mn}[/tex]  , [tex]a^{0}[/tex] = 1

given

[tex]3^{-6}[/tex] × ([tex]3^{4}[/tex] ÷ [tex]3^{0}[/tex] )²

= [tex]3^{-6}[/tex] × ([tex]3^{4}[/tex] ÷ 1 )²

= [tex]3^{-6}[/tex] × [tex](3^4)^{2}[/tex]

= [tex]3^{-6}[/tex] × [tex]3^{8}[/tex]

= [tex]3^{(-6+8)}[/tex]

= 3²

What is the area of this triangle

Answers

Step-by-step explanation:

formula area of rectangle= 1/2 × h × b

area of the triangle

[tex] \frac{1}{2} \times 15 \times 8 = 60[/tex]

Help please!!! Due tomorrow!!

Answers

Answer:

try negative -4 it might be the answer

Answer:

the rate of change is for x it would be 2 and for y it would be 4.

Step-by-step explanation:

Define a variable and write an equation to find each number. Then solve.
Three times a number is 24 less than the number. What is the number?

Answers

Answer:

-12

Step-by-step explanation:

Let x be "the number."  

"Three times a number" means 3x

"is 24 less than the number" means = x-24

Put them togehter:

3x = x-24

2x = -24

x = -12

Check:  Is 3(-12) = 24 less than -12?  YES.

solve:
3x + 2y = -4
x - 2y = 4

Answers

Topic : Linear equations in two variables.

Given :

3x + 2y = -4 ––– (i)x - 2y = 4 ––– (ii)

Solution :

Now,

(i) + (ii)

[tex] \qquad \sf \: { \dashrightarrow 3x + 2y + (x - 2y) = - 4 + 4}[/tex]

[tex] \qquad \sf \: { \dashrightarrow 3x + 2y + x - 2y = 0}[/tex]

[tex] \qquad \sf \: { \dashrightarrow 3x \: \cancel{ + 2y} + x \: \cancel{- 2y} = - 4 + 4}[/tex]

[tex] \qquad \sf \: { \dashrightarrow 4x = 0}[/tex]

[tex] \qquad \bf \: { \dashrightarrow x = 0}[/tex]

Now, substituting the value of x in Eq (i) :

[tex]\qquad \sf \: { \dashrightarrow 3x + 2y = -4}[/tex]

[tex]\qquad \sf \: { \dashrightarrow 3(0) + 2y = -4}[/tex]

[tex]\qquad \sf \: { \dashrightarrow 0 + 2y = -4}[/tex]

[tex]\qquad \sf \: { \dashrightarrow 2y = -4}[/tex]

[tex]\qquad \sf \: { \dashrightarrow y = \dfrac{ - 4}{2} }[/tex]

[tex]\qquad \bf \: { \dashrightarrow y = -2}[/tex]

Therefore, The value of x = 0 and y = -2

The solution to the two given simultaneous equations are; x = 0 and y = -2

How to find the solution to simultaneous equations?

We are given the simultaneous equations;

3x + 2y = -4   -----(eq 1)

x - 2y = 4      ------(eq 2)

Add eq1 and eq2 to get;

4x = 0

x = 0/4

x = 0

Substitute 0 for x in eq 2 to get;

0 - 2y = 4

-2y = 4

y = -4/2

y = -2

Read more about Simultaneous Equations at; https://brainly.com/question/16863577

Which matrix represents the system of equations shown below?

Answers

Answer: A.

Step-by-step explanation:

The correct answer is A.

(x^2+2x)(3x^2-2x+4) Please help this is super important to me

Answers

Answer:

[tex]3x^4+4x^3+8x[/tex]

Step-by-step explanation:

[tex](x^2+2x)(3x^2-2x+4)\\\\(x^2)(3x^2)+(x^2)(-2x)+(x^2)(4)+(2x)(3x^2)+(2x)(-2x)+(2x)(4)\\\\3x^4-2x^3+4x^2+6x^3-4x^2+8x\\\\3x^4+4x^3+8x[/tex]


8. As Margaret starts her new job, her
employer offers two salary options. Plan 1 is base
pay of $1475 per month plus 3% of sales. Plan 2
is base pay of $500 per month plus 15% of sales.
What level of monthly sales is needed for her to
earn more under Plan 2?

Answers

Answer:

yes because she depends on 15% of how much she sells and if she doesn't sell she won't have much money monthly with that plan 1 she would earn more. hope I helped.

Hellllp me please it’s 12:04 am I got school tomorrow

Answers

Answer:

where in the world are you-? its 12:04 am-?!

Mason found out that in order to be on the football team he has to be able to run 1 mile in 7 minutes. Mason computed this time, and found that he would need to run at a constant speed of 9 miles per hour to make the time. Is Mason correct? Explain your reasoning.

Answers

in order for mason to reach his target he would have to run for 1 hour and 3 minutes to complete his 9 miles therefore he is wrong.
9 times 7 = 63

Drag each tile to the correct box.
Arrange the solutions of the mathematical expressions from least to greatest according to their values in scientific notation.

Answers

Answer:

1 is 3 2 is 4 3 is 6 that is all I know

Step-by-step explanation:

i did it already

PLS HELP ASAP 100 POINTS IF YOUR GOOD AT MATH PLS HELP

Answers

Answer:

1. 1.25 or 1 1/4

2. 4.8 or 4 4/5

3. 15 and 5

4.D

5. 1 1/4

Answer:

1. 1.25 or 1 1/4

2. 4.8 or 4 4/5

3. 15 and 5

4.D

5. 1 1/4

Step-by-step explanation:

I am pretty sure this is it!

A triangular prism has an equilateral base with side length x inches. The height of the prism is four times as long as the side length. What is the lateral area of the prism? 12x square inches 12x2 square inches 36x square inches 36x2 square inches.

Answers

Triangular prism has 4 sides, including the base. The lateral area of the considered triangular prism is given by option B: [tex]12x^2 \: \rm inch^2[/tex]

How to find the lateral area of a triangular prism?

Lateral area of the considered triangular prism is the sum of areas of the triangles it is made up from except that of the base triangle.

The lateral area of a right prism which is regular (all lateral sides congruent) is given by:

[tex]A_L = P \times h[/tex]

where, P = Perimeter of the base

h = height of that prism

For the given case, we have the base of the triangular prism of side length x units.

Thus, perimeter of the base = x + x + x = 3x

Height of the base = h = 4 times x = 4x

Thus, we get:

Lateral area of the prism = [tex]3x \times 4x = 12x^2 \: \rm inch^2[/tex]

Thus, The lateral area of the considered triangular prism is given by option B: [tex]12x^2 \: \rm inch^2[/tex]

Learn more about lateral surface area of a prism here:

https://brainly.com/question/9656717

Awnser:

B: 12x (2) <----- (squared) square inches

Step-by-step explanation:

edge 2023

Determine the general term of the sequence 2;4;6..​

Answers

Answer:

tn=a+(n-1)d

a=2

d=2 so

tn=2+(n-1)2

=2+2n-2

2n

An account is gaining value at a rate of 4.94% per year. The account held $113 in 2005. What will the bank account hold in 2017?

Answers

We have that what the bank account hold in 2017  is mathematically given as

T=179.986

Simple interest

Simple interest is a simple way of forecasting and having a view of futuristic values.

Question Parameters:

An account is gaining value at a rate of 4.94% per year.

The account held $113 in 2005.

What will the bank account hold in 2017?

Generally the equation for Simple interest   is mathematically given as

S=(P*R*T)/(100)

Therefore

S=(113*4.94*12)/(100)

S=$66.986

Therefore

after 12 years

T=113+66.986

T=179.986

For more information on Arithmetic visit

https://brainly.com/question/22568180

here is anthor thing i need help with lol

Answers

Answer:

Subtract 40 from both sides.

Full process:

4(n + 10) = 34

4n + 40 = 34

4n = -6

n = 1.5

Ellis buy 24 cans of soda in packs of 6 each pack costs £1.80 Connor buys 24 cans of soda in packs of 8 each pack costs £2.10 Ellis pays more for his 24 cans than Connor how much more?

Answers

[tex]\bold{\huge{\blue{\underline{ Solution }}}}[/tex]

Given :-

Ellis buy 24 cans of soda in packs of 6 soda cansEach pack (Contains 6 soda cans) cost £1.80Connor buys 24 cans of soda in packs of 8 soda cans Each pack ( Contains 8 soda cans) cost £2.10

To Find :-

We have to find out that how much more Ellis has to pay for soda cans than connor?

Let's Begin :-

Ellis bought total 24 soda cans but in packs

Each pack contain 6 cans

Therefore,

Total packs bought by Ellis

[tex]\sf{ = }{\sf{\dfrac{ 24}{6}}}[/tex]

[tex]\sf{ = 4 \: packs }[/tex]

Ellis bought 4 packs of soda cans

The cost of 1 pack = £1.80

So,

Total cost paid by the Ellis

[tex]\sf{ = 4 {\times}{\pounds} 1.80 }[/tex]

[tex]\sf{ = {\pounds}7.20 }[/tex]

Thus, The total cost paid by Ellis is £7.2

Now,

Connor also bought 24 cans of soda but in packs

Each pack contain 8 soda cans

Therefore,

Total packs bought by Connor

[tex]\sf{ = }{\sf{\dfrac{ 24}{8}}}[/tex]

[tex]\sf{ = 3 \: packs }[/tex]

Connor bought 3 packs of soda cans

The cost of 1 pack = £2.10

So,

Total cost paid by the Connor

[tex]\sf{ = 3 {\times}{\pounds}2.10 }[/tex]

[tex]\sf{ = {\pounds}6.30 }[/tex]

Thus, The total cost paid by connor is £6.30

From Above we can conclude that,

Ellis had paid more than connor

That is,

Ellis had to pay more than connor by

[tex]\sf{ = 7.20 - 6.30 }[/tex]

[tex]\sf{ = {\pounds}0.90}[/tex]

Hence, Ellis paid more than connor by £0.90.

What percent is represented by the shaded area?

Answers

14 of 6 is 0.84% so this is the solution!
Answer⇒ 30%
I hope this helps you :)

PLEASE HELP I NEED TO FIND THE PERCENTAGE. ​

Answers

Answer:

Theater: Comedy 61% Drama 39% Home: Comedy 60% Drama 40%

Step-by-step explanation:

Theater: first add 57 and 36 to get the total amount, then do comedy/total, which is 57/93, when you divide this it equals 0.612. Multiply this by 100 and you get 61.2 %, repeat this formula for the rest: x or y/x+y x being one amount and y another amount. x+y is just the total amount. *If you don't care about how to do it look below*

Theater:

Comedy: 57/93 x 100=61%

Drama: 36/93 x 100=39%

Home:

Comedy: 78/131 x 100=60%

Drama: 53/131 x 100=40%

This totally might be late so you don't need it anymore, welp good luck anyway!

[:

SOMEONE PLEASE HELP!!!

Answers

Answer:

Step-by-step explanation:

2. Perpendicular lines form right angles.

3. A right angle has a measure of 90 degrees.

4. Angle addition postulate

5. Angles that add to form a right angle have a measure of 90 degrees.

7. Congruent angles have equal measure.

8. Substitution

9. Angles with measures that add to 90 deg are complementary.

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