Find the solution to the system of equations

−8x+9y=−21
-3x+9y=−36

Answers

Answer 1

Answer:

(-51,-21) solve for the first variable in one of the equations. then substitute the result into the other equation

Answer 2
This is the answer to the question mark me the brainliest
X=-3
Y=-5

Related Questions

which is better Financial manager or accountant?​

Answers

Answer:

Financial manager sounds more professional.

Step-by-step explanation:

what angles are adjacent

Answers

Answer:

2 and 6

Step-by-step explanation:

Adjacent angles require a common vertex, side, and the interiors don't overlap.

You put $500 in an account that earns 4% annual interest. The interest earned each year is added to the principal to create a new principal. Find the total amount in your account after each year for 3 years.
Year 1 =
Year 2 =
Year 3 =

Answers

Answer:

year 1 $520

year 2 $540.80

year 3 $562.43

Step-by-step explanation:

100 + 4 = 104

104/100= 1.04

500 X 1.04^of how many years

A soccer league has 25 sixth graders, 20 seventh graders, and 15 eighth graders. What is the ratio of 7th and 8th graders to 6th graders? ***Write your answer using a COLON

Answers

Answer:

35:25

Step-by-step explanation:

seventh and eighth to sixth

7th+8th : 6th

20+15 : 25

35:25

Hi
Can you check my answer please ​

Answers

Answer:

That is correct!

Step-by-step explanation:

Hope i could help!!!!!!!!

6x + 3y = 12 solve for y

Answers

Answer:

Y= -2x+4

Step-by-step explanation:

Put it in slope intercept form

y=mx+b

Now subtract 6x on both sides to get y isolated

3y=12-6x

Now divide 3 on both sides to get y by itself

y=4-2x

Now in slope intercept form is

y= -2x+4

What is the solution?



Group of answer choices

(0,20

No Solution

(0,-2)

(1,0)

Answers

there’s no solution

PLEASE HELP I WILL HAVE TO DO MATH AGAIN IF I DONT GET THIS RIGHT PLEASE HELP

Answers

Answer:

9

Step-by-step explanation:

What information could you use to solve the word problem below? Check all that apply.

Answers

Answer:

I am not sure but I think the '' D'' answer is correct

20 points!
I need help!
I will also be doing a 50 point giveaway later!

Answers

85 for the first one, 420 for the second one, hope this helps!

Answer:

Step-by-step explanation:

Two step equations
HURRY PLEASE!!!!!!!!!!!!!!!!!!!

Raj paid a total of $155 to purchase 5 books from a book club. Each book cost the same amount. The total cost included a shipping and handling fee of $15. What was the price of each book?

Answers

28 each book 155-15=140 and then 140÷5=28

Given that f(x) = x2 – 14x + 45 and g(x) = 2 – 9, find f(x) – g(x) and
express the result in standard form?

Answers

Answer:

x2-14x+52 is the answer in my calculation.

PLEASE HELP ILLL DO ANYTHJNG ITS MY LAST QUESTION PLS HELP!!

Answers

Answer: dont know im lost

Step-by-step explanation:

Answer:

y = 2x - 3

Step-by-step explanation:

We first need to find y, which is the slope of the line, in this case is 2/1 or 2. b is the y-intercept, or where the line crosses they y-axis, which here is -3. Now you have y = 2x - 3.

expand quadratic equation (2x-3)(x+4) = 0​

Answers

Answer:

Step-by-step explanation:

Simplifying

(2x + -3)(x + -4) = 0

Reorder the terms:

(-3 + 2x)(x + -4) = 0

Reorder the terms:

(-3 + 2x)(-4 + x) = 0

Multiply (-3 + 2x) * (-4 + x)

(-3(-4 + x) + 2x * (-4 + x)) = 0

((-4 * -3 + x * -3) + 2x * (-4 + x)) = 0

((12 + -3x) + 2x * (-4 + x)) = 0

(12 + -3x + (-4 * 2x + x * 2x)) = 0

(12 + -3x + (-8x + 2x2)) = 0

Combine like terms: -3x + -8x = -11x

(12 + -11x + 2x2) = 0

Solving

12 + -11x + 2x2 = 0

Solving for variable 'x'.

Factor a trinomial.

(3 + -2x)(4 + -1x) = 0

Subproblem 1

Set the factor '(3 + -2x)' equal to zero and attempt to solve:

Simplifying

3 + -2x = 0

Solving

3 + -2x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.

3 + -3 + -2x = 0 + -3

Combine like terms: 3 + -3 = 0

0 + -2x = 0 + -3

-2x = 0 + -3

Combine like terms: 0 + -3 = -3

-2x = -3

Divide each side by '-2'.

x = 1.5

Simplifying

x = 1.5

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve:

Simplifying

4 + -1x = 0

Solving

4 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.

4 + -4 + -1x = 0 + -4

Combine like terms: 4 + -4 = 0

0 + -1x = 0 + -4

-1x = 0 + -4

Combine like terms: 0 + -4 = -4

-1x = -4

Divide each side by '-1'.

x = 4

Simplifying

x = 4

Solution

x = {1.5, 4}

Answer:

[tex]2x^2+5x-12=0[/tex]

Step-by-step explanation:

Algebra

To expand the given equation

[tex](2x-3)(x+4)=0[/tex]

we'll use the distributive property by multiplying each term of the first binomial by each term of the second binomial as follows:

[tex]2x^2+8x-3x-12=0[/tex]

Rearranging and simplifying:

[tex]\mathbf{2x^2+5x-12=0}[/tex]

Diego is solving the equation x2 – 12x = 21

Which value must be added to both sides of the equation to make the left side a perfect -square trinomial?

A

36

B

32

с

144

D

4

Answers

Answer:

[tex]36[/tex]

Step-by-step explanation:

Given

[tex]x^2 - 12x = 21[/tex]

Required

Make a perfect square

First, get the coefficient (k) of x

[tex]k = -12[/tex]

Divide by 2

[tex]\frac{k}{2} = \frac{-12}{2}[/tex]

[tex]\frac{k}{2} = -6[/tex]

Square this result:

[tex](\frac{k}{2})^2 = (-6)^2[/tex]

[tex](\frac{k}{2})^2 = 36[/tex]

Hence, 36 when added to the left-hand side makes it a perfect square trinomial

what is 1,005 x 105 i need help please

Answers

Answer:

105525

Step-by-step explanation:

Answer:

1,005 x 105 = 105,525

Hope this helped! Have a great weekend.

5. An airplane takes 4 hr to travel a distance of 4100 km. Another airplane travels at a speed
which is 200 km/hr less than first airplane. How long will it take to travel the same distance by
the second airplane?

Answers

Answer:

4.969696 hours

Step-by-step explanation:

The distance traveled is shown through the following equations

Distance = velocity * time

This means that

4100=velocity*4

This means that ariplane 1 travles at 1025 km/hr

We can then subtract 200 from this to find that airplane two travels at a speed of 825 km/hr

Now we need to find how long it takes for that plane to travel 4100

So using the same equation

4100=825*time

Divison will tell us that the answer is around 4.9696 hours which is pretty much 5

*100 POINTS*

What is the equation for the line in slope-intercept form?



Enter your answer in the box.

Answers

Answer:

y = -2x - 4

Step-by-step explanation:

In order to write down the equation of this line in slope-intercept form we will need to know the slope and the y intercept. Since the y intercept is the value of y when x = 0, from this we know that in our case the y intercept is - 4. Now in order of find the slope we can choose any two points on the linear function and then divide the rise by the run of the slope (if you want to understand this more you can read about how to find the slope). In our case I took two points (-2, 0) and (0, -4). Form here we know that the slope is....

Let "m" be the slope...

[tex]m = \frac{y_{2}-y_{1}}{x_{2}-x_{1} }= \frac{-4 - 0}{0 + 2} = \frac{-4}{2} = -2[/tex]

We know that the slope-intercept looks like y = mx + b (where m is the slope and b is the intercept) so since we know both the slope and the y interest we can conclude the following.

The equation of the linear function show is y = -2x - 4

who’s up!! Can someone help meee

Answers

Answer:

Step-by-step explanation:

Plot your first point at coordinates (-3,-1). Then, plot your second point at (0,-2). You will notice this graph is a negative slope, given -1/3x from the equation, and that it shifts down 2 on the y-axis, given the -2 from the equation. Hope this helps!

Jan 258:00:56 AM
Watch help video
Write the equation of the line that passes thought the points (0,4) and (-9, -3).
Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.

Answers

Answer:

The equation of the straight line in point-slope form

                            [tex]y - 4 = \frac{7}{9} (x-0)[/tex]

The equation of the straight line

                         7x -9y +36 =0

Step-by-step explanation:

Step(i):-

Given that the points (0,4) and (-9,-3)

The slope of the line

         [tex]m = \frac{y_{2} - y_{1} }{x_{2}- x_{1} } = \frac{-3-4}{-9-0} = \frac{7}{9}[/tex]

Step(ii):-

    Equation of the straight line passing through the point (0,4) and having slope m = 7/9

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

         [tex]y - 4 = \frac{7}{9} (x-0)[/tex]

      9 y - 36 = 7x

              9y = 7x + 36

          [tex]y = \frac{7x}{9} +\frac{36}{9}[/tex]

Slope - intercept form  

                            [tex]y = \frac{7x}{9} +4[/tex]

Final answer:-

The equation of the straight line in point-slope form

                            [tex]y - 4 = \frac{7}{9} (x-0)[/tex]

The equation of the straight line

                         7x -9y +36 =0

           

   

PLEASE ANSWER TODAY ASAP WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER.
A rectangle is 18 meters long and 25 meters wide.

What is the area of the rectangle?


1/40 m²

1/20 m²

/220 m²

5/16 m²

Answers

To find out the area of a rectangle, you multiply the length by the width.

18 x 25 = 250

Answer: 450 m²

Answer:

18 x 25 = 250

Answer: 450 m²

Step-by-step explanation:

Jev doesn't know you I am sorry...

Linnett is planning a concert and needs to tell the bands that are playing how big the stage is. The stage has a width of 32 ft. And a depth of 17 ft. What is the area of the triangular stage below, in square feet?

Answers

Answer:

272 ft²

Step-by-step explanation:

Given that:

Width = 32 = length of base ; depth = 17 = height

Area of triangle :

A = 0.5 * base * height

A = 0.5 * 17 * 32

A = 272 ft²

Area of triangular stage = 272 ft²

PLZZ HELP FOR BRAINLIEST
What is the y-intercept of the graph?

Answers

Answer:

-5

Step-by-step explanation:

A triangle has side lengths of n, n – 3, and 2(n − 2). If the perimeter of the triangle is at least 37 units, what is the value of n?

OA.

n> 11

OB

n> 8

O C.

n > 10.5

OD

n > 7.5

Answers

Answer:

n = 11

Step-by-step explanation:

The side length of a triangle are n,n-3 and 2(n-2).

The perimeter of the triangle, P = 37 units

We need to find the value of n.

Perimeter = sum of all sides

n+n-3 +2(n-2) = 37

2n-3+2n-4 = 37

4n -7 = 37

4n = 37+7

4n = 44

n = 11

So, the value of n is 11.

The base of a rectangular pyramid has a length of 4 feet and a width of 3 feet. The height of the pyramid is 6 feet. Find the volume of the pyramid.

Answers

Answer:

24

Step-by-step explanation:

volume of the pyramid=length*width* height*1/3

To have the same volume, figures must have the same: (select all that apply)

O base area

O length

O height

O base shape

Answers

Answer:

Height and Base Area

Step-by-step explanation:

If two space figures have the same height and the same cross-sectional area at every level, then they have the same volume

- Cavaleri's Principle

2x + 4y = 24
if y = -3
then x = ____?

Answers

Answer:

x = 18

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of Equality

Step-by-step explanation:

Step 1: Define

2x + 4y = 24

y = -3

Step 2: Solve for x

Substitute in y:                     2x + 4(-3) = 24Multiply:                                2x - 12 = 24Isolate x term:                      2x = 36Isolate x:                               x = 18


Find the probability P(E or F) if E and F are mutually exclusive, P(E)=0.41 and P(F) = 0.47
P(E or F) =

Answers

Answer:

P(E or F)=P(E)+P(F)=0.41+0.47=0.88

As per the probability of an event, the probability P(E or F) is 0.88, when E and F are mutually exclusive.

What is probability of an event?

"Probability is simply how likely something is to happen. Whenever we're unsure about the outcome of an event, we can talk about the probabilities of certain outcomes how likely they are.

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty. "

Given, the probability of the event E is P(E) = 0.41

The probability of the event F is P(F) = 0.47

Now, the probability P(E or F) is

= P(E) + P(F)

= 0.41 + 0.47

= 0.88

Therefore, P(E or F) = 0.88

Learn more about the probability of an event here: https://brainly.com/question/13974679

#SPJ2

Su restaurante: "Hola hijo, este sábado tenemos que hacer las compras de la semana. Nuestro presupuesto es S/ 400 y acordamos distribuirlos así con tu mamá: 25 % en verduras, 15 % en lácteos, 30 % en menestras, 20 % en frutas y el resto en artículos de limpieza. ¿Podrías ayudarnos diciéndonos cuánto dinero utilizaremos para cada cosa? 1

Answers

Answer:

Verduras= $100

Lacteos= $60

Menestras= $120

Frutas y verduras= $80

Limpieza= $40

Step-by-step explanation:

Presupuesto= $400

Primero determinamos la proporción a gastar en cada rubro:

Verduras= 0.25

Lacteos= 0.15

Menestras= 0.3

Frutas y verduras= 0.2

Total= 0.9

Limpieza= (1 - 0.9) = 0.1

Ahora, la cantidad de dinero:

Verduras= 0.25*400= $100

Lacteos= 0.15*400= $60

Menestras= 0.3*400= $120

Frutas y verduras= 0.2*400= $80

Limpieza= 0.1*400= $40

Total= $400

Find the slope of a line Perpendicular to the line containing the points (12,-8) and (5,-4)

Answers

Answer: The answer is B 7/4

Step-by-step explanation:

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