Solve the system x+y=0 −2x−y=8 *Answer should be in ( x , y ) form, will give 40 points *

Answers

Answer 1

Answer:

x = -8 and y= 8

(-8,8) is the answer

Answer 2

Answer:

(2,4) (-4,16)

Step-by-step explanation:

Subtract  2 x  from both sides of the equation.

y = 8 − 2 x

Substitute  8 − 2 x  for  y  into  x ^2 − y = 0  then solve for  x .

x = 2 , − 4

Substitute  2  for  x  into  x 2 − y = 0  then solve for  y .

y=4

Substitute  − 4  for  x  into  x 2 − y = 0  then solve for  y .

y=16

Equation form

x = 2 , y = 4

x = − 4 ,  y = 16


Related Questions

keli wants to sew trim around the sleeves and hem of a dance costume. she needs a piece of trim that is 8 1/8 inches long for the sleeves and a piece that is 40 5/8 inches long for the hem. if the package contains 5 feet of trim, how much trim will be left after making the costume

Answers

Answer:

1 15/16 ft

Step-by-step explanation:

40 5/8 + 8 1/8 = 48 6/8

There are 12 inches in a foot.

48/12 = 4

6/8 inch divided by 12 is 1/16 ft

Bhwjwjwjwjjwjwjwjwjwkwkkw

Yo can someone help me out

Answers

Answer:

11

Step-by-step explanation:

PEMDAS

divide first, then add

Answer: 11

Step-by-step explanation: Divide & multiply first so 12/4 then add 8 which would = 11

pls help due soon TY!!

Answers

Try to do the volume divided by 3
Try to divide the volume by three maybe that

-10 x 2/5 A) -7 B)2/5 C)-2 OR D) -1/2

Answers

Answer: b

Step-by-step explanation:

Answer: -10 × 2/5 = -4

Step-by-step explanation:

-10 × 2 = -20 -20÷5 = -4 OR

-10÷5 = -2 ×2= -4. OR

Change 2/5 to a decimal

.4 × -10 = -4

The options in answers in the question are incorrect.

Try It for Example 3: Is 3.14144144414444... a rational number? Explain your reasoning. *

Answers

it's irrational

A rational number can be put over a fraction, while this number continues forever

Explain how to convert 2.7 × 104 from scientific notation to standard form, then give the answer in standard form.

Answers

The exponent positive 4 means we move the decimal four spaces to the right.

The 2.7 becomes 27,000 after doing so

[tex]2.7 \times 10^4 = 27,000[/tex]

If the exponent was negative, then we would move the decimal point to the left.

When converting scientific notation to standard form you will move the decimal the number of times that is shown in the exponent which in this case is 4. So , you move the decimal to the right since it is a positive 4 then that would give you the number 27,000 which is in standard form.

A coordinate grid is drawn over a postcard of Da Vinci's Mona Lisa. The postcard is a 1/4 dilation of the original painting. If the tip of Mona Lisa's nose on the postcard is at the point (−4, 2), what would be the coordinates of the tip of her nose in the preimage?

Answers

Answer:

Step-by-step explanation:

(-16,8) is your answer!

Does a given translation, reflection, or rotation, followed by a given dilation, always map a figure to the same image as that same dilation followed by that same translation, reflection, or rotation ? Explain .

Answers

rotatian girl rotation

Answer: rotation

Step-by-step explanation:

another challenge for you guys​

Answers

Answer:

?

Step-by-step explanation:

Which statement is false? A All whole numbers are integers. B All integers greater than 0 are whole numbers. C No real numbers are irrational numbers. D No integers are irrational numbers.

Answers

no real numbers are irrational numbers

It is false that C. No real numbers are irrational numbers

Real numbers include both irrational and rational numbers so it is not true that a real number cannot be a rational number.

The other options are wrong because:

All whole numbers are indeed integers because integers are numbers that do not have to be written as fractions which makes them whole. All integers greater than 0 are whole numbers because they do not need to be written as fractions. Because integers are whole numbers, they cannot be irrational numbers which are numbers that go on forever e.g. π. Integers are whole which means that they can be completed.

Conclusively speaking therefore, the only false statement here is that no real numbers are irrational numbers.

For more information look at https://brainly.com/question/1475390.

Im confused I got 70

Answers

Answer:

$190

Step-by-step explanation:

you just have to add all the numbers up- 62.89+48.26+81.99 which is about 193 so you would round down

You just add all the prices up.

3/8 = r + 2/3
what is R

Answers

-7/24, because you can just do this question in reverse to figure out an answer. (3/8 - 2/3)
The answer is -7/24 I believe

Can someone help me please?

Answers

Answer:

437.4 meters squared

Step-by-step explanation:

7.2*4.5=32.4=b

3*4.5=13.5=h

b*h=a

32.4*13.5=437.4m^2

437.4 ms hope this helps

what is 2 3/4 times 1/2 in lowest terms

Answers

The lowest term would be 1 3/8
Please mark brainliest
The answer of Fraction Form would be 1 3/8 , and can be converted into 1.375 :)

When measuring a golf ball, the volume was found to be 40cm3. The mass of the golf ball was 60 grams. Calculate the density.

240 g/cm3
1.5 g/cm3
20 g/cm3
0.75 g/cm3

Answers

Answer:

1500 kilogram/cubic meter.

Step-by-step explanation:

1500 kilogram/ cubic meter

Please help ty asap :>

Answers

Answer:

7 they have the same amount of books

8 c because it is the same on both sides but the 12 is replaced with then

9 when you multiply 3 or more are the same no mater the way you multiply

Step-by-step explanation:

For #7 it’s none, both of them have the same amount of books.

8. Is C

9. Associative property is a rule in math that explains that the way factors are grouped in a multiplication problem doesn’t affect the answer or change it. For example 4x25x27, if you wrote it as 25x4x27 the answer would still be the same.

Try It for Example 1: In the next several games, the pitcher threw a total of 384 pitches and used a fastball 240 times. What decimal should Juanita use to update her report?

Answers

The answer is 0.625!

How do the angle measures and side lengths compare in similar figures ?

Answers

Answer:

Matching sides of two or more polygons are called corresponding sides, and matching angles are called corresponding angles. If two figures are similar, then the measures of the corresponding angles are equal and the ratios of the lengths of the corresponding sides are proportional.

Step-by-step explanation:

The angles are congruent in a similar figure and the ratio of the sides is in proportion.

What are similar figures?

Two figures are said to be similar if they are the same shape. In more mathematical language, two figures are similar if their corresponding angles are congruent, and the ratios of the lengths of their corresponding sides are equal. This common ratio is called the scale factor.

Given: Two figures are similar for example say two triangles are similar then Similar triangles are triangles that have the same shape, but their sizes may vary. All equilateral triangles, squares of any side lengths are examples of similar objects. In other words, if two triangles are similar, then their corresponding angles are congruent and corresponding sides are in equal proportion. We denote the similarity of triangles here by ‘~’ symbol.

Hence, The angles are congruent in a similar figure and the ratio of the sides is in proportion.

Learn more about similarity and congruence here:

https://brainly.com/question/7888063

#SPJ2

Yo can someone help me out (Please add explanation)

Answers

Answer:

6

Step-by-step explanation:

3*12/(4+2)

so first u do whats in the parenthesis

3*12/(6)

then order doesnt matter

3*2=6

Answer:

6

Step-by-step explanation:

3 × 12 ÷ 6

= 36 ÷ 6

= 6

I need more help I dont understand these letters and numbers​

Answers

Answer:

Width also known as (W) = 1.5 meters

Area also known as (A) = 6 square meters

Length also known as (L) = ?

the formula to find Length is:

Step-by-step explanation:

[tex]L=\frac{A}{W}[/tex]

[tex]L = \frac{6}{1.5}[/tex]

[tex]L= 4 m[/tex]

Choice 3 is the answer

1.5x = 6

x=4

substitute 4 for the x

1.5(4)=6

1.5×4 = 6

so

6=6

so the answer is

1.5x=6

x=4

The answer would be 4.

If you multiply 1.5 by 4 you get 6.0 and it's the same to 6.

Which set of numbers includes only integers?
{14,2,3.0,243)
{14, -7,0,243, -3}
{14. - 16.680.-240}
{14,23,654,0,9}

Answers

Answer:

{14,23,654,0,9}

Step-by-step explanation:

The first three contain negative numbers and decimal points therefor the last one {14,23,654,0,9} is correct.

$2000 at 6% simple interest for 3 years. A. 360 B. 3600 C. 600 D. 650

Answers

Answer: B.3600

Step-by-step explanation:

b

3600

hope this helps

SOLVE SIMPLE {3×3} SUDOKU

Answers

Answer:

9

Step-by-step explanation:

3x3 is like 3+3+3 so the answer for that is 9

The answer is 9 I know this because it’s easy lol

I only got 1 hr. left HELP and get brainiest plus a thank you and 5 stars if gotten right. PLZ HELP attachments added.

Answers

Answer:

Step-by-step explanation:

70

1st is D
2nd is B
3rd can’t see all choices
Not sure bout 4 but it’s 5 dollars per person

Yo can someone help me out

Answers

Answer:

5+2

Step-by-step explanation:

give the other person braniliest

Answer:

i like ya cut g

Step-by-step explanation:

cut like

Look at the picture of the prism separating light. Which explains why a prism can separate sunlight into a rainbow of all the visible colors? Right triangle prism with beam of white light touching its right corner and beam of colored light coming out from its base Question 4 options:

A. Light of each wavelength travels at a different speed through a vacuum.

B. The glass of a prism absorbs some colors and transmits others.

C. Light of each wavelength is refracted at a different angle.

D. The prism reflects light of each wavelength at a different angle.

Answers

Answer:

B

Step-by-step explanation:

It’s D. First of prisms are used to break up light conduit spectral colors because of the refractive index depends on frequency, the white light enters the prism and is a mixture of different frequencies each of which it’s been slightly differently.

Find the midpoint of the line segment with end coordinates of: (2,0)and (8,8)

Answers

Answer:

(5 , 4)

Step-by-step explanation:

Midpoint formula:

"Add both "x" coordinates, divide by 2. Add both "y" coordinates, divide by 2."

The answer is ( 1,5)

What is this??? 6x+5=? x=5

Answers

Answer:

35

Step-by-step explanation:

It's telling you to plug in 5 for x.

So 6x + 5 is actually 6(5) +5.

6 × 5 = 30.

30 + 5 = 35.

Whats 30 times 30 plus 45 minus 456

Answers

30 times 30 plus 45 minus 456 is 489

Answer:

489 or -113

Step-by-step explanation:

Whats 30 times 30 plus 45 minus 456

rewrite in terms of numbers:

30 * 30 + 45 - 456

remember the order of operations and solve:

30 * 30 + 45 - 456

=900 + 45 -456

= 945 - 456

= 489

the answer could change depending on the placement of parenthesis, such as if the equation was:

30 * (30 + 45 -456)

solve with the order of operations:

30 * ( 30 + 45 - 456)

= 30 * (75 - 456)

= 30 *(-381)

= -11430

Which values are in the solution set of the inequality -9/4x+12≥-8? Select all that apply. A. 6 B. 7 C. 8 D. 10 E. 11

Answers

Answer: A, B, C

Step-by-step explanation:

To solve for the inequality, we would solve it as if it had an equals sign.

[tex]-\frac{9}{4} x+12\geq -8[/tex]             [subtract both sides by 12]

[tex]-\frac{9}{4} x\geq -20[/tex]                   [multiply both sides by -4/9, remember to flip inequality]

[tex]x\leq \frac{80}{9}[/tex]

Now, we know that the solution is less than or equal to 80/9, which is approximately 8.89.

Looking at the answer choices, A, B and C are the answers since they are both less than 8.89.

A, B, C
Explanation:
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