[tex]x1+2x2-x3=3, 2x1+x2-2x3=1, 3x1+4x2-5x3=5[/tex]

Answers

Answer 1

Answer: x1 = 0; x2 = 5/3; x3 = 1/3

x1 + 2x2 - x3 = 3 => 2x1 + 4x2 - 2x3 = 6

                                2x1 + x2 - 2x3 = 1

=> 4x2 - x2 = 5

⇔ 3x2 = 5

⇔ x2 = 5/3

with x2 = 5/3, we have: x1 - x3 = 3 - 10/3 = -1/3

                                        3x1 - 5x3 = 5 - 4.5/3 = -5/3

=> x1 = 0

    x3 = 1/3

Step-by-step explanation:


Related Questions

someone please help!

Answers

Answer:

The answer would be option C

Which rule describes the translation?
O (x, y) = (x – 8, y - 3)
O (x, y) - (x - 3, y+8)
O (x, y) = (x + 8, y-3)
O (x, y) - (x + 3, y + 8)

Answers

Answer:

c

Step-by-step explanation:

translations assignment



Find two integers whose sum is -9 and product is 14

Answers

-7, 2

-7 + -2 = -9

-7 * -2 = 14

Which ordered pair is on the graph of 7x - y = 2?

Answers

(0,-2)(sry if I’m wrong :/)

(4x-4)-8x

a. -8x
b.-4x-4
c.-4x+4
d.12x-4​

Answers

Answer:

-8x

Step-by-step explanation:

if it helps you then plzz mark me brainliest

Wich one is a better buy? Show your work.

Answers

Answer:

The second one because $2.50

Step-by-step explanation:10.5/3 1/3=3.15 6.25/2.5=2.50

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Determine and factor out the GCF

1)3a+6b
2)h^3-4h^2

Answers

Answer:

1. 3(a+ 2b)

2. h^2(h-4)

Step-by-step explanation:

1. so you factor out the 3 because it’s the gcf of 3 and 6

2. h^2 is the gcf of h^3 and 4h^2

What is the distance between points R and S, to the nearest tenth of a unit? A. 6.3 B. 7.2 C. 14.4 D. 20.0

Answers

Answer:

Distance of RS = 14.4 units (Approx)

Step-by-step explanation:

Co-ordinate

R (-8, -6)

S (4, 2)

Find:

Distance of RS

Computation:

Distance = √(x1 - x2)² + (y1 - y2)²

Distance of RS = √(-8 - 4)² + (-6 - 2)²

Distance of RS = √144 + 64

Distance of RS = √208

Distance of RS = 14.4 units (Approx)

If $360.00 is shared in the ratio 2:3. What is the smaller share?

Answers

Answer:

the smaller share is 144$

Step-by-step explanation:

2 + 3 = 5

360$ = 5x

x = 360/5

x = 72

the smaller share is 2 parts

2 * 72

144

PLEASE HELP i have to turn this at the end of the day! PLEASE DONT GUESS! :)

Answers

Answer:

x = 13, z = 184

Step-by-step explanation:

(14x-94) = 88

14x = 182

x = 13

z = 360 - 88*2 = 360 - 176 = 184

Answer:

x = 13; z = 92

Step-by-step explanation:

88 = 14x - 94

14x = 182

x = 13

180 = z + 88

z = 92

The cost y (in dollars) of a gym membership for x months is y=20x+25. Graph the equation.

Answers

Answer:

The graph of the equation y = 20x+25 is attached below.

Please check the attached graph.

Step-by-step explanation:

We know that the slope-intercept form of the line equation

[tex]y = mx+b[/tex]

where

m is the slopeb is the y-intercept

In our case, we are given that the cost y (in dollars) of a gym membership for x months is:

[tex]y=20x+25[/tex]

comparing with the slope-intercept form of the line equation

Here:

The slope of the equation is: m = 20

The y-intercept is: b = 25

The graph of the equation y = 20x+25 is also attached below.

From the graph, it is clear that the graph of the line crosses the y-axis at y = 25.

Thus, the point (0, 25) represents the y-intercept of the function.

Please check the attached graph.

what fraction does each get if six people share one whole pizza​

Answers

Answer:

Does it say how many peices the pizza has? (if not then 1/6 ^^)

It cost Isaiah $20.28 to send 156 text messages. What is the cost of sending text
messages, in dollars per text?
On the double number line below, fill in the given values, then use multiplication or
division to find the missing value.
dollars
text messages
Answer: $
per text Submit Answer

Answers

i think $0.13 (13 cents)

Find the solution of the system of equations.
-7x – 6y = -1
14x + 5y = 9

Answers

Answer:-7x-6y=-1  = - 7/6+1/6

Step-by-step explanation:

there is a college student who wants to buy apples from the local store. the store generally sells about 5 apples for every 2 coustomers they serve. About how many apples will they sell in 6 hours if they serve 10 coustomers every hour?

Answers

Theirs a total of 60 customers divide it by 2 then times it by 5, you would get 150apples

the area of a circle is 94pi squared meters. What is the radius of the circle?

Answers

Answer: 47

Step-by-step explanation:

Radius is half of a crickets so if you divide 94 by 2 you will get 47

In the number 4,532,800 what place is the 5

Answers

Answer:

One-Hundred Thousand Place value

Step-by-step explanation:

Find the area of the image below: (4 points)

01) 41 square units
2) 44 square units
3) 52 square units
4) 56 square units

Answers

Show us the image so I can answer the question.

I need help with these twooo​

Answers

Answer:

Question 5

We get n=42.15 and o=71.5

Question 6

We get e=15.32 and t=17.88

Step-by-step explanation:

Question 5

The triangles are similar.

So, the ratio of corresponding sides will be similar.

[tex]\frac{53}{n}=\frac{88}{70}=\frac{90}{o}[/tex]

First we will solve [tex]\frac{53}{n}=\frac{88}{70}[/tex] to find value of n.

Cross multiply

[tex]53*70=88*n\\n=\frac{3710}{88}\\n=42.15\\[/tex]

Now, we will solve [tex]\frac{88}{70}=\frac{90}{o}[/tex] to find value of o

[tex]88*o = 90*70\\o=\frac{6300}{88}\\o=71.5\\[/tex]

So, We get n=42.15 and o=71.5

Question 6

The triangles are similar.

So, the ratio of corresponding sides will be similar.

[tex]\frac{9.6}{e}=\frac{5.7}{9.1}=\frac{11.2}{t}[/tex]

First we will solve [tex]\frac{9.6}{e}=\frac{5.7}{9.1}[/tex] to find value of n.

Cross multiply

[tex]9.1*9.6=e*5.7\\e=\frac{87.36}{5.7}\\e=15.32\\[/tex]

Now, we will solve [tex]\frac{5.7}{9.1}=\frac{11.2}{t}[/tex] to find value of o

[tex]5.7*t = 11.2*9.1\\t=\frac{101.92}{5.7}\\t=17.88\\[/tex]

So, We get e=15.32 and t=17.88

area of a equalatiral triangle with 1 cm on each side

Answers

Answer:

side=a=1cm(let)

area of a equalatiral triangle=√3/4a²=√3/4×1²=√3/4cm²

8-3 + 4 = 8 - 7 = 1
Do you agree with Dora?
Explain your answer.

Answers

8-3+4=8-7=1

8-3+4=9

9-7= 2

no
No. 8-3=5. 5+4 =9 . It is suppose to be 9 not 8! Next you would do 9-7 =2 not 1!!

What would this be??????

Answers

Answer:

I think it's the second one(200(1.034)t = 250)

Step-by-step explanation:

if not correct me. or try the third one.

Can someone help me

Answers

Answer:

8x32 = 256

Step-by-step explanation:

Answer:

288

Step-by-step explanation:

2×2=4 4×2=8

2×2=4 4×2=8 8×2=16 16×2=36

36×8=288

A computer system valued at $1500 three years ago is now worth $600. Find the percentage decrease in the value or the computer system?

100 point answer please use the formula (P)(T)=A and show how you plugged everything in

Answers

Answer:2100-2200$

Step-by-step explanation:

Which property of multiplication is shown?
6 x 5 = 5 x 6

Answers

Answer:

Commutative Property of Multiplication

I hope this helps you :D

Commutative

The commutative property tells us that two addition and multiplication sentences are equal no matter the order.

For example:

3+4=4+3

6 x 5= 5 x 6

Hope this helps. Please give brainiest.

Combine like terms-
37y + 18y

Answers

Answer:

I believe the answer is 55y

Step-by-step explanation:

Hope this helps! ^^

Answer:

55y

Step-by-step explanation:

37+18 = 55

Nevia spent $0.75 on 1.5 pounds of bananas. At this rate, how much will 6 pounds of bananas cost?
Show work.​

Answers

correct answer is $3.

hope it helps u :)

which shape has 2 parallel sides /i ready question

Answers

Answer:

A Parallelogram

Step-by-step explanation:

Answer:

Parallelogram

Parallelogram: A quadrilateral with 2 pairs of parallel sides. Rectangle: A parallelogram with 4 right angles.

Step-by-step explanation:

28 decreased by 2.6%

Answers

Answer:

Please check the explanation.

Step-by-step explanation:

Given

28 decreased by 2.6%

First we need to determine the percentage decrease such as:

Percentage decrease = 2.6% of 28

                                     = 2.6/100 × 28

                                     = 0.026 × 28

                                     = 0.73

New value can be determined using the formula

New vaue = 28 - percentage decrease

                 = 28 - 0.73

                 = 27.27

Divide £16 in the ratio 3 : 1

Answers

Answer:

12 : 4

Step-by-step explanation:

3:1

3+1 = 4

16 / 4 = 4

3 x 4 =12

1 x 4 =4

12 : 4

£12:£4
Add the ratio together to get 4 and then divide 16 by 4
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