Mathematics High School

5. A system of equations is below. For what value would
you multiply the first equation to eliminate the x-term?
(y=x+2
3x + 3y = 6

Answers

Answer 1

Answer:

We would multiply the first equation by -3  to eliminate the x-term.

Step-by-step explanation:

Given the system of equations

y = x+2                Equation 1

3x+3y = 6           Equation 2

Multiply the Equation 1 by -3

-3y = -3(x+2) ⇒ -3y = -3x-6 ⇒ -3x+3y = 6

Thus, equation 1 becomes

-3x+3y = 6

Now, adding equation 2

-3x+3y = 6

+

3x+3y = 6

________

0x + 6y = 12

6y = 12

y = 2

Therefore, we would multiply the first equation by -3  to eliminate the x-term.

Related Questions

question 15, i’m sick and i only have until 12am to finish all my missing work and i need to pass to make my parents happy but i’m lowkey sad rn but #swag

Answers

Answer:

-3(x+2)-x

-3-2x

Step-by-step explanation:

Answer:

-3-2x

Step-by-step explanation:

You place a 16 foot ladder against a building. The angle that the ladder forms with
the ground is 60 degrees. How far from the base of the building is the bottom of
the ladder? round to the nearest foot.

Answers

Answer:The base of the ladder should be placed so that it is one foot away from the building for every four feet of hight to where the ladder rests against the building. This is known as the 4 to 1 rule.

Step-by-step explanation:

out of these numbers which of them differ by 46. 29,17,38,71,35,63,24

Answers

Answer:

71

Step-by-step explanation:

Add 46 to each number, see if the sum is in the list. In the set of 7 numbers listed, two of them are even (24 and 38), and the other 5 numbers are odd

71

We do not need to look at all differences.

We need to find two numbers fairly far appart,

and not all look promising.

You could look at approximate differences,

or you could look at the last digit.

71-35 and 63-17 are the only promising differences,

because 71 and 63 are the only numbers large enough to be 46 more than another number in that list,

and when you calculate the last digit you calculate

11-5=6 and 13-7=6.

71-35=36

The scatterplot below shows the number of hours that some high school students spend on working and on video games.
A graph title Working and Video games has weekly working hours on the x-axis and weekly hours of video games on the y-axis. Points are grouped together and decrease.

Which statement about the scatterplot is true?
In general, the number of hours spent working does not affect the number of hours spent on video games.
In general, the amount of weekly time spent working is equal to the amount of weekly time spent on video games.
As the amount of time spent working increases, the amount of time spent on video games increases.
As the number of hours spent working increases, the amount of time spent on video games decreases.

Answers

Answer:

D

Step-by-step explanation:

I got it right on edg 2020

Answer:

d

Step-by-step explanation:

Please help me im confused

Answers

78 goes to the first bosnian
The two top rectangles are 3 and 81 and the middle one on the bottom is 25

What is the decimal equivalent of 1/5?

Answers

Answer:

.2

Step-by-step explanation:

Answer:

.20

Step-by-step explanation:

1 divided by 5 is .20

I GIVE BRAINIEST

Can someone help me with question number two.

Using the first graph.

Just in case you can’t see the question is for number two how long does it take the plane to reach its maximum altitude.

Answers

I can’t read the numbers but when the graph flattens out at the top. There is two points there it’s the first point

Plz help with these 3:)

Answers

Answer: 1) 2

2) 7/10

3) -1/3

Classify each triangle by it angle and by its sides plz help me out

Answers

Answer:

scalene, acute

Step-by-step explanation:

plzz help mee e

A motor home starts across a lake. The lake is 7 miles long and it takes 0.5 hours to get across. What is the speed? Write a formulae and show a label.

QUICKK
Solve systems by substitution Find the solution
SHOW ALL WORK

X = 5
-4x + y = -10

( , )

Answers

This is the answer (5,10)

Two brothers, Paul and Julio, left the schoolyard and decided to have a very long footrace. Julio started running at exactly 4:00pm, and ran at a pace of 300 meters per minute. Paul started running at exactly 4:10pm and ran at a pace of 420 meters per minute. Write two equations where y = distance covered and x = the number of minutes after 4:00pm to represent Paul’s and Julio’s journey

Answers

Answer:

this is eassy

Step-by-step explanation:

Which is the corresponding angle

Answers

Answer:

4 and 8

Step-by-step explanation:

4 and 8 are corresponding angles as they form at parallel lines cut by a transversal.

4 and 3 are supplementary angles (they both add up to 180°).

4 and 1 are vertically opposite angles and are equal to each other.

From the above explanations, only 4 and 8 are corresponding angles.

I hope this helps! I would really appreciate it if you would please mark me brainliest! Have a blessed day!

Tyson works 34 hours each week at $20.39 per hour.
Tyson has 29.51% taken out for taxes and withholdings,
What is the net pay per year?
A $488.68
B. $10,638.21
C. $204.58
D. $25,411.31

Answers

Answer:

34 X 20.39 = 693.26

693.26 X 52 = 36049.52

100-29.51 = 70.49

36049.52/100 X 70.49 = 25411.306648

monetary value rounded 2dp = $25411.31

answer is D

The perimeter of a rectangular field is 292 yards. If the width of the field is 63 yards, what is its length?

Answers

Answer:

83

Step-by-step explanation:

do the math

Answer:

83

Step-by-step explanation:

Solution:

63 + 63 = 126

292 - 126 = 166

166 ÷ 2 = 83

Answer: 83

Twice a number increased by seven is equal to five. Which of the following represents the equation and solution for this statement?

2 n + 7 = 5; n = -4.5
2 n = 7 + 5; n = 6
2 n + 7 = 5; n = -1
2( n + 7) = 5; n = -4.5

Answers

Hey there!

The answer to your question is the third option: 2n + 7 = 5; n = -1

"twice a number increased by 7" would represent 2n + 7, and if it's equal to 5, it would be 2n + 7 = 5. That rules out the last option, and the second option. Now, we have to solve for "n":

2n + 7 = 5         Step 1: Write the equation.

     2n = -2        Step 2: Subtract 7 from both sides.

       n = -1         Step 3: Divide both sides by 2.

Therefore, "n" is equal to -1, and the third option would be correct.

Hope it helps! Have a great day, and good luck on your assignment!

Answer:

Step-by-step explanation:

The answer to your question is the third option: 2n + 7 = 5; n = -1

"twice a number increased by 7" would represent 2n + 7, and if it's equal to 5, it would be 2n + 7 = 5. That rules out the last option, and the second option. Now, we have to solve for "n":

2n + 7 = 5         Step 1: Write the equation.

    2n = -2        Step 2: Subtract 7 from both sides.

      n = -1         Step 3: Divide both sides by 2.

Therefore, "n" is equal to -1, and the third option would be correct.

can someone please help it says :
For each of the 6 pairs of triangles below, determine if the triangles can be proved congruent. If yes, tell which of the patterns it fits (SSS, SAS, ASA, or AAS)

Answers

Answer:

a. is congruent by SSS

b. is congruent by AAS

c. is congruent by ASA

d. is congruent by SAS

Step-by-step explanation:

a. is SSS because all sides are marked

b. is AAS because the point where the two triangles meet are vertical angles and the one side of the triangle is marked congruent making AAS

c. is ASA because the angles are on segment FG and segment BC and there is a congruent line in between the two angles making ASA

d. is SAS because the triangles share the segment QS and when two triangles share a segment, that segment is congruent. the outside segment is congruent and then there is an angle and then the inside segment is congruent

PLEASE HELP!! If you can show your work. I wanna know how you solved it. :)
Daniel has 47 coins. Some are nickels and some are dimes. He has 5 more nickels than dimes. How many
nickels does he have?
Equation 1:
Equation 2:
# of nickels:

Answers

Answer:

:) i have no idea have a good day hope u get it

Step-by-step explanation:

I need help again, but I did it step by step and I want to make sure it is the correct answer. Please help, thxs!!

Answers

if your answer is 13 then it’s correct

Answer:

13!

Step-by-step explanation:

I hope I'm right and I hope it helps! *If I'm wrong again that would be really embarrassing.*

If the following ratios are proportional, what is the missing quantity? 10.2/3 ; 17/5; _____/11; 57.8/17

Answers

Answer:

37.4

Step-by-step explanation:

Use one of ratios to find the missing quantity:

17/5 = x/11

Cross-multiply:

5x = 17*11x = 17*11/5x = 37.4

The monthly texting plan of All Star Cell is $11 per month and $0.25 per text. The monthly texting plan of Top Line Cell is $14 per month and $0.15 per text. A student wants to set up a system of equations to find the number of texts for which the total monthly cost of the two companies is the same. He uses the variables x and y. He lets y represent the total monthly cost. What will x represent? x = number of texts x = cost of the total number of texts x = total monthly cost x = cost of each text

Answers

Answer:

Your answer is A. x = number of texts

Step-by-step explanation:

I took the quiz, it's correct

Good luck

Answer:

Your answer is A. x = number of texts

Step-by-step explanation:

Have a great day!

Question: which points are reflections of each other across both axes?

Answers

Answer: I think your answer would be A. (-2,8) and (2,-8)

I hope it's right

What is the perimeter of this figure?

Answers

Answer:

6+2+3+3+3+5=22 is a correct answer

Ten gallons of a 25% salt solution are to be obtained by mixing solutions that are 13% salt and 33% salt
respectively. How many gallons of each are needed?

Answers

Answer:

salt + salt = salt

0.13x +3.3-0.33x =2.5

-0.20x=-0.8

x= 4 gallons (amt of 13% solution to be mixed)

10-x= 6 gallons (amt of 33% solution to be mixed)

-----------

Cheers,

Stan H.

Step-by-step explanation:

negitive 1/5 n +7=2 solve quick first to get mark brainlest

Answers

Step-by-step answer:

-1/5n+7=2

-1/5n+7-7=2-7

-1/5n=-5

-1/5n/-1/5=-5/-1/5

n=25

what's the value of (-8)(2/3)

Answers

Answer:

-5.3

Step-by-step explanation:

I'm not really sure if thats the answer but i try

Answer:

5.33333333333

Arnie scored 34 points in 16 soccer games. Maria scored 18 points in 15 soccer games. Who scored more points per game?

Answers

Answer:

Arnie

Step-by-step explanation:

Arnie : 34 ÷ 16 = 2.2

Maria : 18÷ 15= 1.2

please help me on this will give you brainliest

Answers

Answer: 3/4= 15/20, 4/5= 16/20

3/4<4/5

Answer:

15/20    16/20    <

Step-by-step explanation:

First, make a common denominator for both, which is 20. So, 3/4 = 15/20. Then 4/5= 16/20. 15/20 < 16/20, so 3/4 < 4/5.

A student tried to solve the following equation but made a mistake.



Step 1: 4 – 8x = -28

Step 2: -8x = -24

Step 3: x = 3



What mistake did the student make?

Answers

9514 1404 393

Answer:

  in Step 2, the student added 4 on the right and subtracted 4 on the left

Step-by-step explanation:

In Step 2, the student subtracted 4 on the left side of the equation, but incorrectly added 4 on the right. (The same operation needs to be performed on both sides of the equation.) The correct step 2 would be ...

  -8x = -32 . . . . correct step 2

  x = 4 . . . . . correct step 3

Divide € 165 into the ratio 1:2:12

Answers

Answer:

11 : 22 : 132

Step-by-step explanation:

1 + 2 + 12 = 15

165 ÷ 15 = 11

1 × 11 = 11

2 × 11 = 22

12 × 11 = 132

11 : 22 : 132

please help i shall give brainliest

Answers

Answer:

I think the answer is d

Step-by-step explanation:

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

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