One way of solving systems of linear equations is by adding a multiple of one equation to the other. The multiplier for the first equation is chosen so that one of the two variables will cancel out in the sum. What should you multiply the equation y=0 y=0 by so that when added to x+y=40 x+y=40 the variable y yy will cancel out?

Answers

Answer 1

Answer:

Multiply y = 0 by -1

Step-by-step explanation:

Given

y = 0 (1)

x + y = 40 (2)

What should you multiply the equation y=0 by so that when added to x + y = 40, the variable y will cancel out ?

Multiply (1) by -1

y = 0 × -1

-y = 0 (1b)

Add (1b) and (2)

-y = 0

x + y = 40

(0 + x) + (-y + y) = 0 + 40

x + (0) = 40

x = 40

You should multiply the equation y = 0 by -1 so that when added to x + y = 40 the variable y will cancel out


Related Questions

Find the product: 5(2x2 + 4x + 3)

Answers

Answer:

10x^2+20x+15

Step-by-step explanation:

5(2x^2+4x+3)

u distributed it and u get

10x^2+20x+15

Answer: I am pretty sure it is 115+20x

Step-by-step explanation: You have to do distributive Property

10 times 10+ 20x+15

100+20x+15

115+20x

idk the answer at all​

Answers

Answer:

y-1=3/2(x+3)

Step-by-step explanation:

Calculate the slope m of the given line using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 2, - 4) and (x₂, y₂ ) = (2, 2) ← 2 points on the line

m=2+4/2+2=6/4=3/2

Parallel lines have equal slopes.

The equation of a line in point-slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Here m = 3/2 and (a, b) = (- 3, 1), thus

y - 1 = 3/2 (x - (- 3)), that is

y - 1 = 3/2 (x + 3) ← equation in point- slope form

Need help asap PLEASE same problem just made it easier to see

Answers

Label XY with 3.

Label angle X with 53 degrees.

Label angle Y with 90 degrees.

Label angle C with 37 degrees.

Label angle A with 53 degrees.

Label BC with 4.

Label AC with 5.

Answer: i don't know if you want degrees or the lengths so i did both

∠ACB = 37°

∠BAC = 53°

∠ZXY = 53°

∠XYZ = 90°

∠XZY = 37°

∠ABC = 90°

BC = 4

AC = 5

AB = 3

YZ = 4

XY = 3

XZ = 5

Step-by-step explanation:

37 + 90 = 127

180 - 127 = 53

37 + 90 + 53 = 180

Do yoi think you can sovle this?
Free brainlest for answer, 25 points.

Answers

Answer:

23 did i get it?

Which statement describes the vertical asymptotes of the graph of f(x) = x2–64/8x - 64

Answers

Answer:

The graph has no vertical asymptote.  or A

Step-by-step explanation:

Right on edge

For the given function f(x) = (x² -64) / (8x -64)  there is no vertical asymptotes of the graph.

What is vertical asymptotes ?

"A vertical asymptote is a vertical line, , which represents  that invisible line approaches from either the positive or negative side, the function approaches infinity. Vertical asymptotes occur at the values where a rational function has a denominator of 0."

According to the question,

Given,

f(x) = (x² -64) / (8x -64)

     = ( x- 8)(x + 8) / 8(x -8)

     = (x + 8) / 8

    = x/8 + 1

To find vertical asymptotes denominator = 0.

But here denominator 8 ≠ 0

Therefore,

No vertical asymptotes

horizontal asymptotes: no

slant/ oblique asymptotes: y = x/8 + 1

Hence, the graph has no vertical asymptotes.

Learn more about vertical asymptotes here

https://brainly.com/question/11743529

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Is this a function or not a function? (Picture)

Answers

Answer:

Yes it is a function

Step-by-step explanation:

I can do math can I get brainliest?

Un abuelo quiere repartir una cierta cantidad de manera proporcional entre sus tres nietos de 14, 10 y 6 años de edad ¿A quién le corresponde más? Resuelve el problema apoyándote con los videos previos. Una vez resuelto, planteen el tema a alguien de su familia y juntos comenten cómo utilizan las relaciones proporcionales en sus quehaceres.

Answers

Answer:

El nieto de 14 años de edad recibirá la mayor cantidad.

Step-by-step explanation:

En este problema, debemos tener en mente que la cantidad aportada es directamente proporcional a la edad de quien recibe, esta cantidad es igual al producto de la cantidad total y la razón de la edad de quien recibe y la suma de todas las edades.

Bajo este razonamiento, podemos concluir que el nieto de 14 años de edad recibirá la mayor cantidad.

The product of two integers is -40. If
the sum of the two integers is -3, what
are the two integers?

Answers

Answer:

-20

Step-by-step explanation:

no cap

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and their plan of going to graduate school. Compute the row percentages.
A. Yes = 35% and No = 65% Business = 25%, Engineering = 30%, and Others = 45%
B. Yes = 48% and No = 52% Business = 31.5%, Engineering = 36.5%, and Others = 32%

Answers

Incomplete question. Attached is an image of the table.

Step-by-step explanation:

A.

Yes = 35% = [tex]\frac{280}{800} * 100 =[/tex] 35%.   and No = 65% = [tex]\frac{520}{800} * 100 =[/tex] 65%

Business = 25% = [tex]\frac{70}{280} * 100 =[/tex] 25%.Engineering = 30% = [tex]\frac{84}{280} * 100 =[/tex] 30%.  and Others = 45% = [tex]\frac{126}{280} * 100 =[/tex] 45%.

Analyzing a System
Solve the system of inequalities.
x² - gpg
v> 2
Which describe the solution set of the given system?
Check all that apply
The solution set is unbounded.
The point (1, 0) is in the solution set.
There is one point of intersection of the boundary
curves
The boundaries of the overlapping region are in the
solution set.
The boundary curves intersect at approximately
(-3,0).

Answers

Answer:

A, C, E

Step-by-step explanation:

took the assignment on edge

Answer:

a , c and e

Step-by-step explanation:

got it right on edg ^u^

Look at the pattern below.

0, 3, 6, 9, ...

Create a new pattern that follows the same rule as the one above.

Answers

0 , 4 , 8 , 12 , .... that’s what you can do to answer that question

0,5,10,15,20,

Step-by-step explanation:

I'm just adding 5 to each because I add 3 to each number


Dylan mowed three lawns for $45. Determine the cost per lawn

Answers

Answer:

$15

Step-by-step explanation:

Dvide 45 by 3 to get 15.

Answer: $15 per lawn

Explanation: If he mowed 3 laws for $45, you need to do 45 divided by 3 which equals 15 to find out he makes $15 per lawn.

HELP : calculating slope between two points.

Answers

Answer:

(1.)3.5 (2.)-3 (3)0

Step-by-step explanation:

if right comment please

Your answers are
1. m=7/2
2.m=-3
3.m=0

What integer represents the situation ""6 yards behind the winner""?

Answers

Answer:

-6

Step-by-step explanation:

An integer is a whole number that can either be positive, negative or zero.

Now, we want to write the integer that represents 6 yards behind the winner.

Now, a distance of 6 yards behind the winner means a deficit distance of 6 yards behind the winner. Which in turn means a negative distance which is -6 yards behind the winner.

Thus, the integer is -6


Adam has two kinds of fruit punch left over from a party. He mixes 5 liters of fruit punch A with 10 liters of fruit punch B to create fruit
punch C. Fruit punch A contains 25% orange juice and the resulting fruit punch C contains 35% orange juice.
What percent orange juice does fruit punch B contain?
OA. 20%
OB. 50%
OC. 40%
OD 25%

Answers

Answer:

A. 20%

Step-by-step explanation:

fruit punch A is half of fruit punch B so times 35 by 2 and then subtract 50. 50 came from 25 times 2.

I need help please and thank you in advance

Answers

im pretty sure it’s g(x) = x^2 - 3

Kyle plans to estimate the area of the figure below by identifying the full and partial squares that make up the figure.
If Kyle uses the strategy, which statement best describes the figure?
O 20 full squares and 8 partial squares
0 24 full squares and 12 partial squares
0 36 full squares and 12 partial squares
O 40 full squares and 8 partial squares

Answers

Answer:

The answer is one hundred percent D

Step-by-step explanation:

Hi

Answer:

D

Step-by-step explanation:

(HELP PLEASE) Lines a and d are


-non-coplanar.

-parallel.

-perpendicular.

-skew.

Answers

the lines are perpendicular

What is the midpoint of the segments with endpoints (3,7) and (9,15)

Answers

The midpoint is (6, 11)

I have attached the equation so it’s easier to understand.

To find the midpoint we do
(x^1+x^2 /2 , y^1+y^2 /2)

3, 7 is x^1, y^1
And
9, 15 is x^2, y^2

(3+9 /2 , 7+15 /2)

Add the x and y =

(12/2 , 22/2)

Now we divide both by 2 =

(6, 11)

Answer:

(6,11)

I can confirm that this question is right.

12/2      22/2

(6   ,        11)

10,716/ 456 written as a decimal

Answers

Explanation/Answer: 23.5

The decimal value of 10716 / 456 is 23.5.

Given,

10716 / 456.

We need to convert it into a decimal value.

What is a decimal number?

A number that has a decimal point is called a decimal number.

In order to convert a fraction into a decimal number, we need to divide the numerator by the denominator.

Example: 7/2 =3.5

Find the decimal number.

We have,

10716 / 456

We can directly divide or we can simplify the fraction into a simpler fraction.

10716 = 12 x 893

456 = 12 x 38

So,

= 12 x 893 / 12 x 38

= 893 / 38
Divide 893 by 38

We get,

= 23.5

Thus the decimal value of 10716 / 456 is 23.5.

Learn more about converting fractions into decimals here:

https://brainly.com/question/2362378

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Give the probability distribution for X:

x 0 1 2 3
f(x) 1/4 1/8 1/2 1/8

Find Var.

Answers

Answer:

Var(x)=1

Step-by-step explanation:

x p(x)         x² x*p(x) x²*p(x)

0 1/4     0 0         0

1 1/8     1 1/8             1/8

2 1/2     4 1           2

3 1/8     9 3/8            9/8

Total                      3/2              13/4

The required variance can be computed as

Var(x)=sumx²*p(x)-(sum(x*p(x)))²

Var(x)=13/4-(3/2)²

Var(x)=13/4-9/4

Var(x)=4/4

Var(x)=1

Thus, the required variance is 1.

To finish a certain job in 8 days in 6 workers are needed. if it is required to finish the same job in 2 days advance how many workers have to work?​

Answers

Answer:

The job needs 48 worker/days.

Step-by-step explanation:

To do it in 4 days, 48/4 or 12

Maureen reads at an average rate of 18 pages per hour. If she reads for 3.5 hours how many pages will she read?

Answers

the answer is 63

Step-by-step explanation

18 x 3.5=63

Answer: 63 pages

Explanation: 18 times 3 equals 54 and then for half an hour that's 9 minutes added to 54 which is 63 pages.

4(3x + 1)
What is the answer to 4(3x + 1)

Answers

12x + 4

Divide 12 by 4

X=3

Answer:

Answer is 12x+4. Hope that helped.

8/9 - 1/3 equals what​

Answers

Answer: 5/9

Explanation: Start by making them have common denominators by multiplying the numerator and denominator by 3, so now its 8/9-3/9 then 8-3=5 so the answer is 5/9.
tha answer is excalty 5/9

the info about it is down below enjoy your day :)

Answers

Step-by-step explanation:

column 2 is greater

have a gret day too

B is the correct answer. The number in column ll is greater. The decimal value of the number in the 2nd column is 0.78 and the value of the number in the first column is 0.52. Thence b is right;)

Hanna lost 4 points on a test and earned 4 points on an extra-credit question​

Answers

Answer:

the total points earned and lose cancel eachother out to be 0. she did not lose any points

Answer:

the total points earned and lose cancel eachother out to be 0. she did not lose any points

Step-by-step explanation:

Find the slope of the line

Answers

(0,5) is the answer

Sequence: 49, 36, 25, 16, 8, 4, 1 * Is this a arithmetic or geometric sequence? and if it is arithmetic find the common difference and if it is geometric find the common ratio? and please do not give me a stupid answer only smart people answer this if you know the answer to this you are smart. 1

Answers

Answer:

The given sequence [tex]49,36,25,16,8,4,1[/tex] is neither a arithmetic nor a geometric sequence

Step-by-step explanation:

A sequence is said to be an arithmetic sequence if difference between the terms is same.

A sequence is said to be a geometric sequence if ratio of the terms is same.

Given sequence is [tex]49,36,25,16,8,4,1[/tex]

Here,

[tex]36-49=-13\\25-36=-11\\36-49\neq 25-36[/tex]

So, this sequence is not an arithmetic sequence.

Also,

[tex]\frac{36}{49}\neq \frac{25}{36}[/tex]

So, this sequence is not a geometric sequence.

Therefore,

The given sequence [tex]49,36,25,16,8,4,1[/tex] is neither a arithmetic nor a geometric sequence

Use algebraic means to show that x^2 + y^2 = 8 is not a function. Explain your process.

Answers

Answer:

For a single value of x function has more than one corresponding value of y which satisfies the equation.

Step-by-step explanation:

Function: A relationship between a set of inputs and a set of possible outputs, where exactly one output is associated with each input.

It means for an equation to represent a function any single value of  x there should be only one corresponding value of  y which satisfies the equation.

Now consider the given equation.

[tex]x^2 + y^2 = 8[/tex]

If we put x=0 then we get two value of y i.e [tex]\sqrt8[/tex] and [tex]-\sqrt8[/tex] which satisfy the equation  and therefore the equation is not a function.

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