Solve the system using the elimination method. - Which one should I do first
3x-4y+z=-5
6x-4y+z=1
x+y+z=6

Answers

Answer 1

Answer:

first equation and second equation

Step-by-step explanation:

it is more easier because both of them have the same y

Answer 2

Answer:

Use equation (1) and equation(2) and eliminate 4y+z

Step-by-step explanation:

3x-4y+z=-5     ...(1)

6x-4y+z=1        ...(2)

x+y+z=6          ...(3)

First, you find the equation that you can use the elimination method on;

there are multiples of them.

However, I would use equation (1) and equation(2) and eliminate 4y+z :

 3x-4y+z=-5

- 6x-4y+z=1  

         -3x=-6

            x=2

As you can see, both the terms with y and z are eliminated in one step, exposing the variable x.

From here is just my advice:

There are multiple ways for you to answer this question. In math, the process may sometimes not matter if the answer was correct. Nevertheless, you should try finding one way that fits you or makes it easier to solve. I personally think that how I have been trying this helped me later when math got more complicated. (Also, it was fun for me to find another way that I was not taught of)

GOOD LUCK!! and I HOPE THIS HELPS YOU!!!!


Related Questions

Help me pleade help me​

Answers

The answer is C.

For a relation to be a function every x-value must be associated with one y-value. C has the x-value of 1 have two separate y-values. The others do not have an x-value that repeats.

Write the equation of the line that passes through the given points. ​(0​,3​) and ​(-17​,1​)
Whats the answer? Need help ASAP

Answers

Answer:

the equation: y=2/17x+3

the slope: 2/17

Step-by-step explanation:

HELP ASAP!!! I WILL GIVE BRAINLIEST

Answers

Answer:

ok what's the question

Answer:

C

Step-by-step explanation:

hope this helps

A. Explain how you know that Triangle ABC is similar to Triangle A'B'C'. (use complete sentences and show all your work to get full credit)

B. If AC = 8, A'C' = 12, and AB = 20 what is the length of A'B'?

Answers

Answer:

A. Since the 3 angles in ∆ABC are congruent to the corresponding 3 angles in ∆A'B'C', therefore, ∆ABC is similar to ∆A'B'C'.

B. A'B' = 30

Step-by-step explanation:

A. Two triangles are said to be similar if their corresponding angles are congruent to each other.

To know whether ∆ABC and ∆A'B'C' are similar, let's find the measure of their angles each, and see if their corresponding angles are congruent to each other.

∆ABC:

m<A = 59°

m<B = 37°

m<C = 180 - (37 + 59) = 84°

∆A'B'C':

m<A' = 59°

m<B' = 180 - (59 + 84) = 37°

m<C' = 84°

As we can see,

Angle A is congruent to Angle A'

Angle B is congruent to Angle B'

Angle C is congruent to Angle C'

Therefore, since the 3 angles in ∆ABC are congruent to the corresponding 3 angles in ∆A'B'C', therefore, ∆ABC is similar to ∆A'B'C'.

B. AC = 8; A'C' = 12; AB = 20

Since ∆ABC is similar to ∆A'B'C', the ratio of their corresponding sides would be equal.

Therefore:

AC/A'C' = AB/A'B'

Plug in the values into the equation

8/12 = 20/A'B'

Cross multiply

A'B'*8 = 20*12

A'B'*8= 240

Divide both sides by 8

A'B' = 240/8

A'B' = 30

abcd is a trapezium, calculate the area of abcd

Answers

Answer: Area of a trapezium ABCD = {¹/₂ × (AB + DC) × h} square units. = ¹/₂ × h × (AB + DC) square units. You could have went to google and got the answers cause that what I did dummy

Can someone help please?!

Answers

Answer:

A.) Y.

Step-by-step explanation:

I'm not sure how to explain.

A) Y
Look as where the line goes from x and y axes. Look at the numbers

Please hwlp! Ava is driving her car. At the end of 2 hours she has driven 92 miles, and at the end of 5 hours she has driven 245 miles. What is her average rate of change?
_(blank)_ miles per hour

Answers

Answer: 51 miles per hour

Use the points (2,92) and (5,245)
Then do y2-y1/x2-x1
So 245-92/5-2
=153/3
Simplify= 51

x/9 - 1 = 2 solve for x

Answers

Answer: x=27

Step-by-step explanation:

Guys pls help me im failing my grade and i really need help plsssss and dont do it for the points

Answers

Answer:

simplified:  [tex]\frac{3}{5}[/tex]

unsimplified:  [tex]\frac{12}{20}[/tex]

Step-by-step explanation:

Since the fractions have the same denominator, all we have to do is subtract the numbers in the numerator:

15 - 3 = 12

The difference of the two fractions is [tex]\frac{12}{20}[/tex]. To simplify this answer, divide both the numerator and the denominator by 4:

12/4 = 3

20/4 = 5

The difference in simplified form is [tex]\frac{3}{5}[/tex].

I hope this helps. :)

La regla de Ruffini es un procedimiento que nos permite dividir fácilmente un polinomio cuando el divisor es un binomio de la forma (x ± a). *


Verdadero

Falso

Answers

Answer:

si como estas chico

Step-by-step explanation:

The sum of four consecutive integers is -118. What is the largest of the integers?

Answers

Answer:

-28

Step-by-step explanation:

the four number are -28, -29, -30, and -31. they are all consecutive meaning all before or after the previous number. The sum is -118 making then all negative so when you add all the negative numbers you get and even bigger negative number. it is -28 because -28 is closest to 0.

Evaluate the function f(x) = 2x + 8 when x= 6 .

A 28
B 96
C None of the other answers are correct
D 16
E 20​

Answers

Answer:

-1 or f =   1.333333333 + 0.3333333333x

is what i got  its not an answer so im sorry

Step-by-step explanation:

Simplifying

f(6) = 2x + 8

Reorder the terms for easier multiplication:

6f = 2x + 8

Reorder the terms:

6f = 8 + 2x

Solving

6f = 8 + 2x

Solving for variable 'f'.

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

Divide each side by '6'.

f = 1.333333333 + 0.3333333333x

Simplifying

f = 1.333333333 + 0.3333333333x

Answer:

Answer is 28

Step-by-step explanation:

Had the same question and answer was 28 you can thank me later :D

Which values represent solutions to the equation?
Tan(3Pi/4-2x)=-1, where x = [0,pi]

Answers

0 is the a answer definately

The value of the variable x will be {0, pi/2, pi}. Then the correct option is B.

What is trigonometry?

The connection between the lengths and angles of a triangular shape is the subject of trigonometry.

The trigonometric equation is given below.

tan (3π/4 - 2x) = - 1

We know that the value of tan 3π / 3 is negative one. Then the equation will be

tan (3π/4 - 2x) = tan 3π/4

Apply inverse of tangent on both sides, then the equation will be

(3π/4 - 2x) = 3π/4, -π / 4

         - 2x = 0, -π

           2x = 0, π

             x = 0, π/2

Then the value of the variable x will be {0, pi/2, pi}.

Then the correct option is B.

The question was incomplete, but the complete question is given below.

Which values represent solutions to the equation? tan(3pi/4 - 2x) = -1, where x ∈ [0,pi]

A) {0, pi}

B) {0, pi/2, pi}

C) {0, pi, 2pi}

D) {0, pi/2, pi ⋅ 3pi/2}

More about the trigonometry link is given below.

https://brainly.com/question/22698523

#SPJ2

HELPPP :(
Max is mountain hiking at a constant rate.

This equation y = 10x + 30 can be used to represent this situation, where y is Max's elevation in meters and x is the number of hours Max has been hiking.

Which statement best describes Max's elevation, given this equation?

Max started at a height of 10 meters and is ascending at 30 meters per hour.

Max started at a height of 10 meters and is descending at 30 meters per hour.

Max started at a height of 30 meters and is ascending at 10 meters per hour.

Max started at a height of 30 meters and is descending at 10 meters per hour.
(If you don’t know the answer, please don’t spam :<)

Answers

Answer:

D.) Max started at a height of 30 meters and is ascending at 10 meters per hour.

The statement that  best describes Max's elevation, given this equation is

D.) Max started at a height of 30 meters and is ascending at 10 meters per hour.

Given that,

This equation y = 10x + 30 can be used to represent this situation, where y is Max's elevation in meters and x is the number of hours Max has been hiking.

Explanation regarding the statement:The max should begins at the height of 30 meters. And, the ascending at 10 meters per hour.

Learn more about the height here: https://brainly.com/question/5281804

Determime if the following lines are paraleel, perpendicular or neither.

Answers

They are perpendicular

Jesse plays basketball for his high school team. In his last 12 twelve games he scored the following points: 18, 22, 19, 15, 24, 22, 18, 15, 10, 14, 18, 10. Barbara plays basketball for her high school team. In her last 10 games she scored the following points: 15, 12, 12, 16, 18, 22, 16, 20, 20, 14. Determine which player had the largest range of points scored? What is the difference is the range of points between the two players?

In the form of a paragraph, explain in complete sentences the steps necessary to compute the range of the points, which team player had the largest range of points and include the final answer in your explanation. Complete your work in the space provided.

Answers

Answer:

Jesse has the largest range between the two players. The difference between their ranges is 2.

Step-by-step explanation:

Jesse's range: 14

Barbara's range: 10

Range is determined by using the largest number and the smallest number in a set of integers and subtracting them. Jesse's highest number was 24, and his lowest would be 10. 24-10=14.

Barbara's highest score was 22, while her lowest was 12. 22-12=10.

subtracting Jesse's range from Barbara's range would equal 2.  

(please don't cook me if this is incorrect but i'm 97% sure i'm right)

help me please The total number of students who could attend a field trip is represented by the variablet. The number of students in Group A is less than the number in Group B. Group A has 6 students more than the total number of students, while Group B has 3 less than the total number of students. Which inequality represents this situation?

O ¼t + 6 < t – 3

O (¼ + 6)t < t – 3

O ¼t + 6 < 3 – t

O 6t + ¼ < t – 3

Answers

Answer:

1/4 +6<t-3

Step-by-step explanation:

the answer is tahta

Answer: I think it is the first answer

Step-by-step explanation:

Group A = < Group B

Group A has 6 more than total so 1/4t+6

Group B has 3 less than total so t-3

Question 2 (1 point) Which ordered pair is a solution to the equation below? -4x + 2y = 16 O (-3, 2) O (4, -1) (2-3)​

Answers

Answer:

A. (-3, 2)

Step-by-step explanation:

First step is to revert the equation into y = mx  + b form.

-4x + 2y = 16 turns into y = 2x+8

Now just plug in the points given to see which one matches.

(-3,2) the x is -3 so if you plug that into the equation it should get you 2 which is the y.

2 = 2(-3) + 8

2 = 2

So we know that (-3, 2) is the solution.

If you plug in the other points they wont come out equal. For example, (4,-1)

-1 = 2(4) + 8

-1 = 16

So (4,-1) cant be a solution. The same thing applies for (2, -3).

please help quick :) (I'll give brainliest, whatever it's called.)

A relation contains the points (−2, 0), (−1, −1), (0, 2), (1, 0), and (1, −2). (show work if you can)

A. The relation does not represent y as a function of x, because each value of x is associated with a single value of y.
B. The relation represents y as a function of x, because one value of y is associated with two values of x.
C. The relation does not represent y as a function of x, because one value of x is associated with two values of y
D. The relation represents y as a function of x, because each value of x is associated with a single value of y.

Answers

Answer:

C. The relation does not represent y as a function of x, because one value of x is associated with two values of y

Step-by-step explanation:

I chose choice c because in the relation we can see that the x-value 1 repeated but their y-values are different, one has 0 as its y-value and one has -2 as its y-value. In a function, this can't happen so it's not a function.

Hope this helps you

Madison walks 0.2 miles on each trip to the ball park.
How far will she walk on 4 trips?

Answers

Answer:

0.8 miles

Step-by-step explanation:

0.2 x 4 = 0.8

Multiply 0.2*4 that will give you have far she walk in 4 trips :)
0.2*4=0.8

What is 95 feet in inches

Answers

Answer:

1140 in.

Step-by-step explanation:

Multiply the length value by 12, so 95*12=1140

Have a beautiful day! v(⌒o⌒)v♪

13 pretty please
:)tyyyyyyy

Answers

Answer:

B.

Step-by-step explanation:

Solve and Graph the System of Linear Equations
1) 3 X + 2 Y = 4
X + 2 Y = -4

Answers

Answer:

y=-4

x=-12

Step-by-step explanation:

Set up the system

Then you have to cancel out a variable

Then you solve for the remaining variable

Then plug in to find other variable

I'm sorry if that's confusing:/

De acuerdo con una encuesta se determino que en una region hay igual numero de personas lic en administracion comercio servicio de salud y servicio municipal ademas se encontro que 35% de los administrativos 25% de los comerciantes 20% de los servidores de salud y 15% de servicio municipal son mujeres cual es la probabilidad de que una mujer escogida al azar del grupo sea administradora

Answers

Answer:

La probabilidad de que una mujer sea administradora es de 0,35

Step-by-step explanation:

Sean A B, C y D los eventos de las mujeres administrativas, comerciantes, trabajadoras de salud y proveedoras de servicios municipales.

Sus probabilidades están dadas por

P (a) = 35% = 0,35

P (b) = 25% = 0,25

P (c) = 20% = 0,2

P (d) = 15% = 0,15

Como los eventos son independientes, la probabilidad conjunta sería

P (B∩C∩D) = P (D) * P (B) * P (C) = 0.25 * 0.2 * 0.15 = 0.0075

P (A / B∩C∩D) = P (A∩B∩C∩D) / P (B∩C∩D)

                        = 0,35 * 0,0075 / 0,0075 = 0,35

Por lo tanto, la probabilidad condicional de obtener la mujer administradora es la misma que la probabilidad individual de obtener la administradora, ya que los eventos son independientes.

La probabilidad de que una mujer sea administradora es de 0,35

English

Let A B, C and D be the events of the women administrative, merchants, health workers and municipal services providers.

Their probabilities are given by

P (a) = 35% = 0.35

P (b)= 25% = 0.25

P (c) =20% = 0.2

P (d) = 15 % = 0.15

As the events are independent then the joint probability would be

P (B∩C∩D)= P(D) * P(B)* P (C) = 0.25* 0.2*0.15= 0.0075

P(A/B∩C∩D) = P(A∩B∩C∩D)/P(B∩C∩D)

                        = 0.35*0.0075/ 0.0075= 0.35

Therefore the conditional probability of getting the administrator woman is the same as the individual probability of getting the woman administrator  as the events are independent.

Probability of woman administrator is 0.35

In a survey of 2,000 people who owned a certain type of​ car, 900 said they would buy that type of car again. What percent of the people surveyed were satisfied with the​ car?

Answers

Answer:

45%

Step-by-step explanation:

900/2,000 = 45

The equation for the line that has a slope of −38 and passes through (0, 10) is please help me with this problem.

Answers

Answer:

y = -38x + 10

Step-by-step explanation:

Slope- intercept form:

y + mx = b

Given

m = -38 and point (0, 10)

As per given point, y-intercept is b = 10

So the equation is:

y = -38x + 10

Which best represents 3=x/6 -2

Answers

Answer:

30

Step-by-step explanation:

Answer: x = 30

Step-by-step explanation: To solve for x, first you’ll have to make sure that your result will equal to 3. ( x/6 -2). Next, look for a numerator that can make a fraction that equals to 5. Then, you would have to multiply 6 x 5, which equals to 30, so 30 will be x. 3 = (30/6 - 2) 3 = 5-2.

Evaluate the expression when c= 3.
c²+6c-3

Answers

Answer:

21

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

c² + 6c - 3

c = 3

Step 2: Evaluate

Substitute:                    3² + 6(3) - 3Exponents:                   9 + 6(3) - 3Multiply:                        9 + 18 - 3Add:                              24 - 3Subtract:                       21

Given point (2,-5) and slope 1, fill in the blanks to put in point slope form. y-____=____(x-___) *

Answers

Answer:

y =

[tex] \frac{ - 5}{2} x[/tex]

Step-by-step explanation:

The slope is 1 so that makes it

1x

1x is just x

x

y/x is the slope

-5/2

there is no y-int so the equation is

y= (-5/2)x

A 68-year old retiree has a pension savings of $43,000, a 401k of $75,000, and an IRA account of $62,000. Before 2008, he had 2% more cash in the pension, 12% more in the IRA, and −1% in the 401k. He wants to take out 2% from each account before he turns 72, which will cost him a penalty of an extra 3% from the current total amount in his pension, 4% from the 401k, and 6% from the IRA. What is the highest amount that will be taken from a single account, including the penalty, if the retiree takes the money out now from each?

Answers

Answer:

The answer is the IRA

Step-by-step explanation:

If he takes out 2% from each account,  the highest penalty will be for the IRA account which is, 6% of 62,000 is $3,720. He will also take 2% of that 62,000 which will be $1,240. The total will be $4,960.

For the 401k account the withdrawal is $1,500 and the penalty is $3,000. That is $460 less than the IRA account.

I hope this answer helps.

Answer:

54280

Step-by-step explanation:

2+6=8

.08 * 59000=4720

59000-4720=54280

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