Mathematics High School

Which of the following is the best example of a system of equations that should be solved by the elimination method?


Question 2 options:


8x + 3y = 2


5x + 8y = -11



2x - 4y = -16


y = 5x + 13



-8x - 9y = -17


16x - 4y = 12



12x + 7y = -17


9x + 11y = -7

Answers

Answer 1

Answer:the answer -8x-9y=-17

16x-4y=12

Step-by-step explanation:

divide 16x-4y=12 with 2

8x-2y=12

Then add the equations

-8x-9y=-17

8x-2y=12

0-11y=-23

You can’t do this with the other equations provided.

Related Questions

Which value of x makes the equation -5x-(-7-4x) =-2(3x-4 true?

Answers

Answer:

x = 1/5

Step-by-step explanation:

Step 1: Write equation

-5x - (-7 - 4x) = -2(3x - 4)

Step 2: Solve for x

Distribute: -5x + 7 + 4x = -6x + 8Combine like terms: -x + 7 = -6x + 8Add 6x to both sides: 5x + 7 = 8Subtract 7 on both sides: 5x = 1Divide by 5 on both sides: x = 1/5

Step 3: Check

Plug in x to verify it's a solution.

-5(1/5) - (-7 - 4(1/5)) = -2(3(1/5) - 4)

-1 - (-7 - 4/5) = -2(3/5 - 4)

-1 - (-39/5) = -2(-17/5)

-1 + 39/5 = 34/5

34/5 = 34/5

-4x-y+4 when x=-1 4 and y=3

Answers

Answer:

57

Step-by-step explanation:

-4x - y + 4

-4(-14) - 3 + 4

56 - 3 + 4

53 + 4

57

Answer:

2

Step-by-step explanation:

The values of x and y are given. So, plug in the given values into the equation.

-4x-y+4

-4(-1/4)-(3)+4=?

1-3+4=?

=2

(I assumed that you wrote -1/4, by the way)

Two buses are traveling to a state park. One bus leaves the terminal at 4:00 pm, and travels at 40 miles per hour. The second bus
leaves the terminal at 5:00 p.m. and travels at 60 miles per hour.
At what time does the second bus catch up with the first bus?

Answers

Answer:

Step-by-step explanation:

When the second bus catches up to the first bus, this means that the distance they have travelled is equal.

So for bus 1, you know it travels at 40 miles per hour.

4pm = 0 miles

5pm = 40 miles

6 pm = 80 miles

7pm = 120 miles

For bus 2, you know it travels at 60 miles per hour

5pm = 0 miles

6pm = 60 miles

7pm = 120 miles.

So you can see that at 7pm, they will both have travelled 120 miles.

Find the measure of the exterior angle.

Answers

Answer:

108°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

2a is an exterior angle, thus

2a = a + 10 + 44 = a + 54 ( subtract a from both sides )

a = 54

Thus 2a = 2 × 54 = 108° ← exterior angle

Which statement must be true to prove j || k?




a.m∠2 + m∠5 = 180

b.∠6 ≅ ∠4

c.∠2 ≅ ∠3

d.∠1 ≅ ∠4

Answers

Answer:

The answer is b. angle 6 must be equal to angle 4.

g = a-c+b, solve for a​

Answers

Answer:

g=a-c+b

g+c-b=a

I hope help you

WILL MARK BRAINLIEST PLEASE HELP
options are

A. 13
B. 15
C. 26
D. 28​

Answers

Answer:

weird it should be 65.5 or the other way around hm

Step-by-step explanation:

or maybe im just dumb

Which represents the solution set to the inequality 5.1(3 + 2.2x) > –14.25 – 6(1.7x + 4)?


Answers

Answer:

The answer is x > -2.5 or (-2.5,infinity)

Step-by-step explanation:

How do I do this problem im confused?

Answers

Answer: 54800

Step-by-step explanation: plug in 6 instead of t in both the equations. Start with the first equation

-300t+150000

-300(6)+150000= 148200

Then do the other equation

500t+200000

500(6)+200000= 20300

Subtract both

203000-148200= 54800

what does x equal to?

Answers

Answer:

27.3

Step-by-step explanation:

x = (36.4 x (49 - 28))/21 = 27.3

7x_____=1 Help pls lol

Answers

Answer:

1

Step-by-step explanation:

Answer:

I dont think there an answer to that question can you tell us the options

Round the number to the place of the underlined digit. The underlined digit is supposed to be the 7.
42.76

Answers

Answer:

42.80

Step-by-step explanation:

5 or up you round up. 4 or down, you round down. So since 6 is bigger than 5, you round up.

9)
If l||m and jik,
find the value of y.
(6y + 7)°
1
(5x)
(7x + 24°
m
k
A 7
B) 13
C) 18
D) 65
jump roping
spinning in circles
eating gummy bears
finger painting

Answers

9514 1404 393

Answer:

  C) 18  eating gummy bears

Step-by-step explanation:

The angles indicated with x-expressions are supplementary, so we have ...

  (5x) +(7x+24) = 180

  12x +24 = 180 . . . collect terms

  x +2 = 15 . . . . . . divide by 12

  x = 13 . . . . . . . . . subtract 2

Then the obtuse angle is ...

  7x +24 = 7(13) +24 = 115

__

The angle marked with a y-expression is a corresponding angle to this, so has the same measure.

  6y +7 = 115

  6y = 108 . . . . subtract 7; next divide by 6

  y = 18

Answer:

y=18

Step-by-step explanation:

5x+7x+24=180

12x+24=180

12x=156

x=13



6y+7+65=180

6y+72=180

6y=108

y=

Solve

13x - 15 = 12x + 16

Answers

Answer:

x = 31

Step-by-step explanation:

I will make the explanation easy for you to understand.

Step 1: Subtract 12x from both sides.

13x − 15 − 12x = 12x + 16 − 12x

x − 15 = 16

Step 2: Add 15 to both sides.

x − 15 + 15 = 16 + 15

x = 31

Hope it helps!!!

NEED HELP ASAP PLS!!!

A high school club is conducting a cupcake sale at a local fair to raise money for a trip. The club members are baking a total of 444 cupcakes. Each cupcake will sell for 3.00. The display tables cost $75.00 to rent.


Part A:
If n is the Number of cupcakes sold and p is the profit earned, which is the Independent in variable and which is the dependent variable? Explain.

Independent variable:

Dependent variable:

Explain:

Answers

Answer:

independent variable: cupcakes sold

dependent variable: profit earned

explain: no profit earned without cupcakes sold.

Step-by-step explanation:

Answer:

Independent Variable: n = Number of cupcakes sold

Dependent Variable: p =  Profit, no profit without the sale of cupcakes

Step-by-step explanation:

Profit depends on the number of cupcakes sold.

hewlp me now and uh plkz plz plz

Answers

Answer:

r=22

Step-by-step explanation:

Answer:

r = 22

Step-by-step explanation:

Given

[tex]\frac{1}{2}[/tex] r + 4 = [tex]\frac{3}{4}[/tex] r - [tex]\frac{3}{2}[/tex]

Multiply through by 4 to clear the fractions

2r + 16 = 3r - 6 ( subtract 2r from both sides )

16 = r - 6 ( add 6 to both sides )

22 = r

What is the point-slope form of a line with slope -3 that contains the point
(10,-1)?

Answers

Answer:

y=-3x+29

Step-by-step explanation:

y=mx+b or c

m=slope=-3

x=10

y=-1

input the given

-1=-3(10)+b

-1=-30+b

29=b

y=-3x+29

alguma menina de 14 anos no tédio to querendo conhecer gente nova?

Answers

Answer:

Step-by-step explanation:

Oi eu tenho 15 anos

Answer:

OIE tudo bem?

eu tenho 15

how do I find the value of x so f(x)=7​

Answers

Answer:

x=5

Step-by-step explanation:

Here we are given with a graph.

we have been asked to find the value of x for which

As we know that , to find the value of x for the given value of f(x), we need to look onto the vertical axis, and mark a dot on the given value now draw a line perpendicular to vertical axis so that it cut the given straight line, and where they intersect draw another line perpendicular to the horizontal axis and you will get the value where it crosses the horizontal axis.

Hence we get x=5, then f(x)=7.

Henri owns a cupcake shop that also takes special orders. Henri starts the day baking and frosting 120 dozen cupcakes before the store opens. On Wednesday, he received a special order for 20 dozen assorted cupcakes to be delivered the same afternoon. He also sold 98 dozen cupcakes that day. How many dozen cupcakes does Henri have left at the end of the day? Explain your answer.

Answers

Answer: He has 2 dozen cupcakes

Step-by-step explanation:

120*12=1440

20*12=240

1440-240=1200

98*12=1176

1200-1176=24

24= 2 dozens

Select all the equations that have the same solution as the equation 4x - 12 = 36
A 4x = 48
B 2x - 6 = 18
С
4x = 24
D
X-4 = 24
E 8x - 24 = 72

Answers

Hi :)

A) 4x = 48: x= 12
B) 2x -6 = 18 x=12


4x - 12 = 36

Add 12 to both sides
4x=36+12

Add 36 and 12 to get 48
4x=48

Divide both sides by 4
x= 4/48
​

Divide 48 by 4 to get 12
x=12

Hope this helps :)

which model represents the equation shown below
-4x+(-2)=3x+(-5)

Answers

Answer:

The answer on edge is C

Step-by-step explanation:

Hope I helped

Can someone help me please ???

Answers

Answer:

the answer is x= 10/3 sooo C!!!

hope this helps!!

Step-by-step explanation:

A snail can move approximately 0.30 meters per minute. How many meters can the snail cover in 20 minutes?

Answers

Answer:

6

Step-by-step explanation:

  0.30

x    20

     6

Task: 4 2/3 yards = ? feet
whats the rule

Answers

Answer:

4 2/3 yards = 14 feet

Step-by-step explanation:

1 yard = 3 feet

the sum of two nubers is 20. the difference between three times the first number and twice the sencond is 40. find the two numbers.​

Answers

16 and 4 are the two numbers.

Find the midpoint of the line segment joining the points R(-3,3) and S(1,6).
The midpoint is

Answers

Answer:

[tex]Midpoint = ( -1 , 4.5)[/tex]

Step-by-step explanation:

[tex]\frac{-3 + 1}{2}[/tex]  [tex],[/tex] [tex]\frac{3+6}{2}[/tex]

[tex]\frac{-2}{ 2}[/tex] [tex],[/tex]  [tex]\frac{9}{2}[/tex]

[tex]Midpoint = (-1, 4.5)[/tex]

Hope this helps

plz mark brainliest

The midpoint of the points R(-3,3) and S(1,6) is (-1,4.5).

What is a midpoint?

A location that is halfway between two other points is considered to be a line segment's midway. The distance between the midway and each endpoint is the same.

The midpoint is calculated by using the formula:- ( x₁ + x₂ ) / 2 , ( y₁ + y₂ ) / 2.

Given points are R(-3,3) and S(1,6). The midpoint of the given points are calculated as below:-

M = (-3+1 ) / 2 , ( 3 + 9 ) / 2

M = ( -1,4.5)

Therefore, the midpoint of the points R(-3,3) and S(1,6) is (-1,4.5).

To know more about a midpoint follow

https://brainly.com/question/5566419

#SPJ2

Which functions represent the arithmetic sequence 8, 1.5, –5, –11.5 . . . ? Check all that apply.
f(n) = –6.5n + 14.5
f(n) = –1.5n + 9.5
f(n) = 6.5n + 1.5
f(1) = 8, f(n + 1) = f(n) – 6.5
f(1) = 8, f(n + 1) = f(n) – 1.5
f(1) = 8, f(n + 1) = f(n) + 6.5

Answers

Answer:

A,D

Step-by-step explanation:

Can you please help me solve this and show the solution 4y⁴+6y?​

Answers

Answer:

4y^4 + 6y = 256y + 6 = 262y

Step-by-step explanation:

Remove the variables for a second and think of the problem as a normal expression; 4^4 + 6

Simplify the first term; 4^4 = 256

Now, add 6; 256 + 6 = 262

Add back in the variable; 262y

Answer:

2y(2y+3)

Step-by-step explanation:

2y(2y) +6y factor 2y out of 4y^2

2y(2y)+2y(3) factor 2y out of 6y

2y(2y + 3) factor 2y out of 2y(2y)+2y(3)

Angle B=48 and angle E=x+4.
Please help me find x

Answers

It’s E=x+ 4 because it has a X IN IT
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