Solve the system of linear equations by substitution.Check your solution.

Solve The System Of Linear Equations By Substitution.Check Your Solution.

Answers

Answer 1

Step-by-step explanation:

x=-2

y=-1

........................

Solve The System Of Linear Equations By Substitution.Check Your Solution.

Related Questions

what is the value of x in the solution set of -5x-15>10+20x

Answers

Answer:

The answer is x < -1

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Hoped this helped!

brainly, please?

Answer:

–1 is the answer

Step-by-step explanation:

Last year, Tim rode his bike a total of 50 3/8 miles. This year, he rode his bike a total of 258 3/4 miles. Which of the following explains about how much farther Tim rode his bike this year than last year? A. About 200 times farther; Subtract last year's distance from this year's distance to get 208 3/8.
Then round to the nearest hundred to get 200.

B. About 50 times farther; Round each distance to the nearest whole number.
Then multiply last year's distance by 50 to see that 259 is close to 50 × 5.

C. About 10 times farther; 258 is about 5 times 50, and 34 is 2 times 38, so multiply 5 × 2 to get 10.

D. About 5 times farther; Round each distance to the nearest whole number.
Then multiply last year's distance by 5 to see that 259 is close to 50 × 5.

Answers

Answer:

D

Step-by-step explanation:

If 3/4 of the class likes soda and 3/5 of those who like soda prefer Coke, what PERCENT of the whole class that likes Coke?

Answers

Answer:

For soda =3/4

For coke= 3/5 X 3/4=9/20

Whole class is 1....

Therefore X% of 1 =9/20

Solving :

X/100 X 1 =9/20

X/100=9/20

20X =900

X= 900/20 = 45%

Algebra roller coaster building it most state from the ground and it have to be 100ft

Answers

Answer:

sa taas nito ay 50 square meter kung pagbabasihan mo sa ibaba 55 square meter malaki rin sa baba kaya ang tawag dyaan ay centementer

I hope I can help you and give me a star even if I am only 5 or 4 stars and please put a heart for many

What is 0.564 written in expanded form?

Answers

Answer:

0.5 + 0.06 + 0.004 in expanded form.

Step-by-step explanation:

1. Write an ordered pair to represent point G.

Answers

Answer:

n ordered pair contains the coordinates of one point in the coordinate system. A point is named by its ordered pair of the form of (x, y). The first number corresponds to the x-coordinate and the second to the y-coordinate. To graph a point, you draw a dot at the coordinates that corresponds to the ordered pair.

Step-by-step explanation:

Answer:

Ya'll should stop forgetting about the pics

Khan Ana
Writing expressions v
Write an expression to represent:
Three minus the product of two and a number x

Answers

Answer:

Step-by-step explanation:

the expression is 3-(2x)


Halla el MCM de 63 y 77

Answers

Respuesta:

693

Explicación:

Tenemos que dividir ambos dígitos hasta que lleguen a 1.

No importa si uno de los números no se puede dividir, pero se debe iniciar desde los números más bajos: 2, 3, 4, 5, 7...

Cómo no hay una mitad exacta, empezaremos con tercia y continuaremos dividiendo.

63 ; 77 | 3  

21 ; 77  | 3  

7 : 77    | 7

1  ;  11    | 11

1  ;  1

Ahora que llegamos hasta 1, el MCM es la multiplicación de los números por los que hemos dividido a los dígitos. Solo falta multiplicarlos.

3*3*7*11= 693

MCM = 693

Espero te ayude ;)

【Answer.】the lowest common multiple of 77 and 63 is 693.                                

                           [tex]\orange{{\hspace{50 pt}\above 1.2pt}\boldsymbol{\mathsf{Procedure}}{\hspace{50pt}\above 1.2pt} }[/tex]

To obtain the lcm (least common multiple) we must do it by simultaneous decomposition.

This method consists of extracting the common and uncommon prime factors, then

[tex]\large\displaystyle\text{$\begin{gathered}\sf \left.\begin{matrix} \blue{63 \ \ \ 77}\\ 21 \ \ \ 77\\ \ \ 7 \ \ \ 77\\ \ 1 \ \ \ 11\\ \ 1 \ \ \ 1 \end{matrix}\right|\begin{matrix} 3\\ 3\\ 7\\ 11\\ \: \end{matrix} \end{gathered}$}[/tex]

[tex]\sf{m.c.m.(63,77)=3\times3\times7\times11}[/tex]

   [tex]\sf{m.c.m.(63,77)=3^{2} \times7\times11}[/tex]

                 [tex]\boxed{\boxed{\sf{m.c.m.(63,77)=693}}}[/tex]

Order these fractions from least to greatest.
3/8, 2/8 , 4/8

Answers

The answer is :
2/8 < 3/8 < 4/8

4) Steven walked 3 kilometers,
How far did Steven walk in
meters?

Answers

Answer:-
3000 m

Explanation:-
Kilometres into metres
3km = 3 × 1000
= 3000 m

ILL GIVE BRAINLEST !!!!

Enter an equation for the function that includes the points. Give your answer in the form a(b*). In the
event that a = 1, give your answer in the form b*.
(1, 12) and (2, 144)
The equation is f(x)=

Answers

Here ya go enjoy and I’m sorry if this isn’t what your looking for

Tonya drove 343 miles the first day of her trip. how many days will it take her to drive the remaining 1,200 miles if she continues at the same rate?​

Answers

Answer:

3.5 days

Step-by-step explanation:

Given

[tex]Day\ 1 = 343\ miles[/tex]

Required

Number of days to drive 1200 miles

Represent as ratio:

[tex]Day\ 1 = 343\ miles[/tex]

[tex]Ratio = 1 : 343[/tex]

For 1200 miles

[tex]Ratio = x : 1200[/tex]

Equate both ratios

[tex]x : 1200 = 1 : 343[/tex]

Express as fractions

[tex]x/1200 = 1/343[/tex]

Multiply by 120

[tex]x/1200 *1200= 1/343*1200[/tex]

[tex]x= 3.4985[/tex]

[tex]x= 3.5[/tex] --- approximated

Darnell's team scored 40 points at the game. Darnell scored 15% of the team's points. How many points did Darnell score?

Answers

Answer:

Darnel scored 6 points

Step-by-step explanation:

15% of 40 can be written as 40 * 0.15 which is 6. Darnell scored 6 points.

SHOW work
5.3 divided by 0.25 = ?

Answers

Answer:

5.3 divided by 0.25 is 21.2

Answer: 21.2______________________________________Divide 5.3 ÷ 0.25 = 21.2______________________________________

Sorry, Loves.

But I can't really type my work-

I'm on a chrome book so I don't have a camera.

A restaurant uses 8 pounds of potatoes to make 15 servings of hash browns. At this rate, how many servings of hash browns could be made if they had 72 pounds of potatoes?

Answers

Answer:

135

8*9=72

15*9=135

Answer:

135

Step-by-step explanation:

4(8+y)=96 I need this answer if anyone knows it let me know

Answers

Answer:

y = 16

Step-by-step explanation:

Given

4(8 + y) = 96 ( divide both sides by 4 )

8 + y = 24 ( subtract 8 from both sides )

y = 16

Answer:

y = 16

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

4*(8+y)-(96)=0

4 • (y + 8) -  96  = 0

Pull out like factors :

4y - 64  =   4 • (y - 16)

4 • (y - 16)  = 0

Solve :    4   =  0

This equation has no solution.

A non-zero constant never equals zero.

Solve  :   y - 16 = 0

Add  16  to both sides of the equation :

                     y = 16

In right triangle ABC shown below, the midpoint of hypotenuse AC is located at D and segment BD is drawn.
AB = 12 and BC =16, then explain why BD=10. Hint: consider what you know about the diagonals of a
rectangle.

Answers

9514 1404 393

Answer:

  diagonal AC is 20, so all half-diagonals are 10. BD is one such.

Step-by-step explanation:

The length of hypotenuse AC is given by the Pythagorean theorem:

  AC² = AB² + BC²

  AC² = 12² +16² = 400

  AC = √400 = 20

The midpoint of AC is 10 units from A and from C.

Consider point E that finishes rectangle ABCE. Then diagonals BE and AC meet at their midpoints, D. The diagonals of a rectangle are the same length, so the four half-diagonals are congruent:

  AD = CD = ED = BD = 10

_____

Alternate solution

The "rise" from BC to D is half of AB, so is 6.

The "run" from AB to D is half of BC, so is 8.

The Pythagorean theorem tells you BD = √(6² +8²) = 10.

Halla 2 enteros cuyo producto sea 210 y uno de los enteros debe ser uno menos que el doble del otro​

Answers

El ejercicio, se resuelve mediante un sistema de ecuaciones.

Llamemos a los enteros A y B.

1) A*B= 210.
2)B=(1+2A)

Sustituyendo 2 en 1

A*(1+2A)=210.

A+2A²-210= 0

Utilizaremos la siguiente ecuación:



Siendo a=2, b=1, c=-210

A₁=10
A₂= -10,5

Por lo que para B, tambien existen 2 resultados.

B₁= 21
B₂=-20

a car has a mass of 1,200 kg. what is it's acceleration when the engine exerts a force of 600 N ? (formula: F= ma)

Answers

Answer:

In this case, the mass of the car and the force exerted on it are provided as information. Therefore, the acceleration of the car is 0.5 m s−2 when its engine exerts a force of 600 N

Step-by-step explanation:

F=600N
M=1,200kg

600N=(1,200kg)(acceleration)

Acceleration=0.5 m/s^2

Can someone please write the equation for this?

Answers

Answer:

y = 2[tex]\sqrt{x}[/tex] - 3

Step-by-step explanation:

A line segment with endpoints A(-2, 1) and B (2, 1) is dilated with a dilation centered at the origin and a scale factor of
to create A'B'. Which of the following statements regarding AB is not true? (1 point)
The coordinates of A' will be (-5, 2.5).
O AB will be parallel to A' B'
O ABAB"
A' B' is an enlargement of AB

Answers

Answer:

Step-by-step explanation:

I will assume that the scale factor is 2.5

A'(-5,2.5)   True

AB || A'B'   True

?? What does ABAB" mean?

A'B' is an enlargement of AB   True

Slope is
1
2
y-intercept is 7


Asapppp. Hurrryyyy

Answers

Answer:

draw a graph and mark the point as (0,7) on the y-axis upper half since its positive.

from there the slope is rise 1 and run 2. meaning from point 7, you go up one, and slide two to the right and mark the next point and keep doing so till you have 3-5 points

A solar heating device can recharge (store heat) in a single sunny day enough to provide for the next two days. In other words, the only times that the solar heat must be augmented by some other heat source is when there are three or more consecutive cloudy days. During the heating season, a period of 120 days, the weather patterns are described by the following Markov chain:
Sunny Cloudy
Suuny 1/2 1/2
Cloudy 1/3 1/3
Using this information, construct another Markov chain which is capable of indicating when the solar heat must be augmented. Hint: Think carefully about your state definition.

Answers

Answer:

Step-by-step explanation:

Suppose the number of days is represented with the states(S) provided that a sunny day, with a maximum of three.

i.e.

S = (0, 1, 2, 3)

It implies that; if we assume that [tex]X_n=2[/tex], what this means is that today appears cloudy, then yesterday was cloudly as well while the day before yesterday was sunny.

Constructing a one-step probability transition matrix;

[tex]P = \left\begin{array}{cccc}0\\1\\2\\ 3 \end{array}\right \left[\begin{array}{cccc}1/2&1/2&0 &0\\1/3&0&2/3&0\\1/3&0&0&2/3\\ 1/3 &0&0&2/3\\\end{array}\right][/tex]

If 8 spiders can spin 24 webs in 6 days, how many days will it take 12 spiders to spin 18 webs?

Answers

Answer:

3 days

Step-by-step explanation:

See the steps below, one ratio - one pair of numbers changes at a time.

      spiders    webs      days

8                24        6               8                 4         1               ⇒   Divide by 6 2                 1         1               ⇒   Divide by 4 12                6         1               ⇒   Multiply by 6 12               18        3               ⇒   Multiply by 3

Please complete this question, the question is saying: write the correct integer in the blank


Is due please. I will give brainlest

Answers

First one is negative 3 then its negative 3 over 6

Please help me i am taking a test and i really need help

Answers

Answer:

31.4159in

Step-by-step explanation:

Answer:

31.4

Step-by-step explanation:

Four- fifths of the 7th-grade students completed a race. What percent of the 7th-grade students completed the race.

Answers

Answer:

4/5????

Was it supposed to tell you the answer

Step-by-step explanation:

Answer:

80%

Step-by-step explanation:

4 divided by 5 is .8

Then multiply it by 10

.8 x 10 = 80

Does anyone know this?

Answers

Answer:

9.4 m/s

Step-by-step explanation:

This is the concept of application of the Pythagorean theorem. The resultant speed of the motorboat which is crossing the river that has a northward current of 5 m/s at a speed of 8 m/s will be given by:

c^2=a^2+b^2

c^2=8^2+5^2

c^2=64+25

c^2=89

c=sqrt89

c=9.4 m/s

circumference of a circle is 110cm.If the diameter of this circle is used to make one side of a square, what is the perimeter of the square?​

Answers

Answer:

120

Step-by-step explanation:

Answer:

140

Step-by-step explanation:

if the circumference is 110, the diameter is ~35, and 35*4=140

A statistics student wants to determine if there is a relationship between a student's number of absences, x, and
their grade point average (GPA), y. The given data lists the number of absences and GPAs for 15 randomly selected
students
15
1
0
6
9
12
3
3
1
2
7
0
4
Number of
Absences
GPA
2.1
4.3 4.5
3.2
4.0
1.7
3.8
2.9
3.6
3
3.4
2
2.6
3.1
2.8
Using technology, what is the equation for the least-squares regression line?
O ý= 3.79 -0.10x
O ý= 0.10 + 3.79x
O ý= 16.15 – 3.28x
O ý= -3.28 + 16 15x

Answers

Answer: A. ÿ=3.79-0.10x

Step-by-step explanation:I’m a genius

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