solve the pair simultaneous equations
2x+y=7
x -2y=1​

Answers

Answer 1

Answer:

y = 1

x = 3

Step-by-step explanation:

y = 7 - 2x

x - 2y = 1

5x - 14 = 1

y = 7 - 2x

x = 3

y = 7 - 2x

y = 1


Related Questions

Please help!
A person invests 10000 dollars in a bank. The bank pays 4.5% interest compounded
daily. To the nearest tenth of a year, how long must the person leave the money in
the bank until it reaches 17600 dollars?

Answers

Answer: 12.6 years

Step-by-step explanation:

7. In the accompanying diagram of right triangle ABC, altitude BD divides hypotenuse
AC into segments of 3 and 9. Find AB.

A) 6
B) 36
C) 313
D) 12

Answers

Answer:

A.

Step-by-step explanation:

4.
Choose an appropriate metric unit for the mass of a television.


A. kilogram

B. gram

C. milliliter

D. milligram

Answers

kilogram
televisions are heavy

Help ASAP 15 points

a) What is the length of the side of the small square? Do NOT put units in your answer and round to the tenths.
b) What is the area of the small square? Do NOT put units in your answer and round to the tenths.

Answers

Answer:

Step-by-step explanation:

a) Let's [tex]x[/tex] the length of the side of the small square.

Thus,

[tex]x^{2} + (\sqrt{40})^2 = (\sqrt{50})^2[/tex]

[tex]x^{2} + 40 = 50[/tex]

[tex]x^{2} = 50 - 40[/tex]

[tex]x^{2} = 10[/tex]

[tex]x = \sqrt{10}[/tex]

[tex]x=3.16[/tex]

b) Now, the area of the small square is

[tex]A= x^{2}[/tex]

[tex]A=(3.16)^2[/tex]

[tex]A=9.99[/tex]

Nine-hundred seven tickets were sold for a concert. Seven hundred eighty-nine people attended the concert

Part A: Write an equation for p, the number of people that bought tickets but did not attend.

Part B: How many people bought tickets but did not attend?

Answers

Answer:

A: 907-789=p

B: 118 bought tickets but didn't go.

Step-by-step explanation:

907 is the people that bought the tickets, you subtract the people that did go which is 789 which would give you the people that didn't go but still bought tickets.

PLEASE HELPP!! PLEASEE

Answers

Answer:

The rate of change is -300 meters per minute

Step-by-step explanation:

Here, we want to get the rate of change for the given situation

Firstly, we will need to collate the points

Let us have the points as:

(time, height)

The points are;

(10,4500) and (15,3000)

The formula for the slope m representing the average rate of change is;

m = (y2-y1)/(x2-x1)

m = (3000-4500)/(15-10) = -1500/5 = -300 meters/minutes

What is the area of the triangle need help!!

Answers

Answer:

40 square units

Step-by-step explanation:

Area of triangle = 1/2×b×h

= 1/2×10×8

= 40 square units

hey, if you can help me with this and make it believable that i wrote as a 8th grade student that would mean a lot, i'll mark you as brainliest (just tell me how and i'll be glad to do so), also use the words that it said in the question! thanks bye, brb when somebody answers.

- C

Answers

Answer:

4x²-5x +4  X=3

Step-by-step explanation:

The expression below has 3 terms. The first step is to plug in the 3 for all the  x´s. Then find what 3 squared is. Next is to multiply the 9(3²) with the 4 to get 36. Now the expression is 36 - 5 x 3 + 4. Next is to multiply the -5 and the 3 to get 15. Now combine all like terms to get 55.

find the missing term for me plz nd thx

Answers

Answer:

6x

Step-by-step explanation:

3*2x=6x

Simon has a certain length of fencing to enclose a rectangular area. The function AAA models the rectangle's area (in square meters) as a function of its width (in meters).


Which of these statements are true?

Choose all answers that apply:

Choose all answers that apply:


(Choice A)

A

Greater width always relates to smaller area.


(Choice B)

B

Greater width relates to smaller area as long as the width is less than 10\text{ m}10 m10, start text, space, m, end text.


(Choice C)

C

When there is no width, the area is 20\text{ m}^220 m

2

20, start text, space, m, end text, squared.


(Choice D)

D

When there is no width, the area is 0\text{ m}^20 m

2

0, start text, space, m, end text, squared.

Answers

Answer:

When there is no width, the area is 0m²

Step-by-step explanation:

Expressing the area of a rectangle as a function of its width:

Area of a rectangle = Length * width

Since the area of rectangle is related to the width by the multiplication operatkr. We can conclude from the options given that ; if the value of width = 0 ; the the area of rectangular plot = 0

When x :

Area = Length * width

Area = Length * 0

Area = 0

Area = Length * 0

Aea = 0

6. Identify the restrictions on the domain.
x−7/x+4 ÷ x/x+3

Answers

Answer:

x cannot = -4 and -3

Step-by-step explanation:

How many solutions can be found for the equation 5x + 3(x - 1) = 10x - 2x - 3?
None
One
Two
Infinitely many

Answers

Answer:

Infinitely many

Step-by-step explanation:

Equation: 5x + 3(x - 1) = 10x - 2x - 3

1) 5x + 3x - 3 = 10x - 2x - 3

2) 8x - 3 = 8x - 3

3)  8x = 8x

4) x = x

Based on this information, it seems that the best answer would be infinitely many solutions.

Mark is installing a mosaic tile backsplash and the shape of the tiles are shaped like regular octagons. Each tile has a length from side to side of 6 in. Once Mark gets a few pieces on the wall, he realized that there is a gap that the tiles do not cover. What size tile must he get to fill the gaps?

Answers

Answer:

square with sides of 6 in

Step-by-step explanation:

Tessellation is the arrangement of shapes in repeated patterns without gaps or overlapping.

Tessellation is usually done with regular polygons. Only three regular shapes can tessellate, these are equilateral triangle, regular square and regular hexagon. For other polygon to tessellate, more than one shape must be used. A octagon can be used to make tessellations if it is used together with a square.

Mark uses tiles with shape of octagon of sides 6 in. To fill the gaps, Mark have to uses a square with sides of 6 in

Mathematics Question!

Mika estimated the sum of 189.27, 15.8, and 11.2 by rounding each number to the nearest whole.

What was Mika’s estimate and what is the actual sum of the numbers?

Enter your answers in the boxes

Mika estimated the sum to be blank. The actual sum is blank


PLEASE DON’T ANSWER IF YOU DON’T NO THE ANSWER!

Answers

Answer:

Mika's estimated the sum to be 216. The actual sum is 216.27

Step-by-step explanation:

Mika:

189.27 = 189

15.8 = 16

11.2 = 11

189 + 16 + 11 = 216

Actual:

189.27 + 15.8 + 11.2 = 216.27

If m∠XWY=20∘,m∠XWZ=40∘, and XY = 16, what is the value of YZ?

Answers

Answer:

YZ=16

Step-by-step explanation:

Because they are parallel

Read carefully and choose the name of the student who made the correct statement.... ahhh help

Answers

Kiara is right, they are both the same because it is a steady, constant line

The graph of which function is the same as the graph of y=1/x shifted to the right 5 units and shifted up 2 units?

y = 1/x+5 + 2

y = 1/x-2 + 2

y = 1/x+5 - 2

y= 1/x-5 - 2

Answers

Answer: I’m pretty sure it’s y=1/x+5 +2

Step-by-step explanation:

The graph of Function  [tex]y = \frac{1}{x-5}+2[/tex] is same as the graph of [tex]y = \frac{1}{x}[/tex]

What is a graph?

"A graph can be defined as a pictorial representation or a diagram that represents data or values in an organized manner."

What is a function?

"Function, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable)."

We have

[tex]y = \frac{1}{x}[/tex]

The function is shifted 5 units right

⇒[tex]y = \frac{1}{x-5}[/tex]

The function is shifted 2 units up

⇒[tex]y = \frac{1}{x-5}+2[/tex]

Hence, function becomes  [tex]y = \frac{1}{x-5}+2[/tex]

Learn more about function here

https://brainly.in/question/610635

#SPJ2

that is
[tex]2x + 2x[/tex]

Answers

if you are asking “what is 2x+2x”
the answer is 4x

2+2=4

they both have the variable of x, so it just gets added onto the end

hope this helps!

Answer:

2x + 2x =  4x

Step-by-step explanation:

3. What kind of triangle has angles measuring
37°, 85°, and 58°?

Answers

The answer would be an obtuse scalene triangle.

Answer:

Acute triangle

Step-by-step explanation:

All of the triangles vertices are under 90 degrees.

For future reference:

Vertex (plural: vertices)= corner

Acute triangle: each vertex <90 degrees

Right triangle: One vertex = 90 degrees

Obtuse triangle: All vertices >90 degrees

helppppp! please show your work!

Answers

Answer:

90 - 37 will give a solid 53

Step-by-step explanation:

the two sums of A to C to C to B so 22.9(C, B) and 14.1 (A, C)

and know that this angle is 90 degrees, my guess would be to subtract the to given numbers with degrees to earn the sum so 22.9 + 14.1 equals 37

now we add angle degrees and sum and subtract one another,

90 - 37

Alicia's monthly gross pay is $1,700. Alicia pays 10.5% of her monthly income in federal withholding. How much federal withholding does she pay?

Answers

Answer:

$161.90

Step-by-step explanation:

You divide 1700 by 10.5.

Ben made a model (shown below) of the square pyramid he plans to build when he grows up. Find the surface area of the model.

Answers

Answer:

The answer is "[tex]240 \ m^2[/tex]"

Step-by-step explanation:

please find the given diagram image file in the attachment.

In this question, the surface area model includes two things that are square pyramid is equal to the area of the square base and the area of the flour lateral triangle:

[tex]SA= 10\times 10 +4 (\frac{1}{2}\times (10) \times (7))\\\\[/tex]

     [tex]= 100 +4 (\frac{1}{2} \times 70)\\\\= 100 +4 (35)\\\\= 100 +140\\\\=240 \m^2\\\\[/tex]

The surface area of the model is [tex]240 \ m^2[/tex].

Which statements are true regarding the 270° rotation
shown? Check all that apply.

O The sides that were parallel in the pre-image are
parallel in the image.

The angle measures of ABCD are equal to the
corresponding angle measures of A'B'C'D'.
Side AB is longer than side A'B'.
The segments connecting the center rotation to
the corresponding vertices create a 270° angle.
The image has no perpendicular sides.

Answers

Answer:

1,2, and 4 are the correct answers

Step-by-step explanation:

Answer:

1. The sides that were parallel in the pre-image are parallel in the image.

2. The angle measures of ABCD are equal to the corresponding angle measures of A’B’C’D’.

4. The segments connecting the center of rotation to the corresponding vertices create a 270° angle.

Step-by-step explanation:

Edge 2021

help plz- these were given to me and i was told i could only get help on two-

Answers

The answer is 150 inches squared

A convex hexagon has interior angles that measure 100°, 127°, 90°, 182°, and 85°. What is the measure of the 6th interior angle?



a. 187°

b. 88°

c. 136°

d. 160°

Answers

The measure of the 6th interior is B. 88

I need help with this problem please as quickly as possible please and thank you to the person that can help me

Answers

Answer:

6x - 2 - 3x + 4

I think that would be it. I just multiplyed 2 by 3 and then 2 by - 1.

Edit:

The true answer would be 3x+2

help!! help!! help!! help!! help!! help!! help!! help!! help!! USING THE ELIMINATION METHOD SOLVE THESE PLEASEE HELPPPO!!!!!​

Answers

Answer:

a = 15, b = -14

Step-by-step explanation:

From the question,

a/5 - b/2 = 10

Multiply all through by 10

(a/5)10 - (b/2)10 = 10×10

2a - 5b = 100...................... Equation 1

a - b = 29 ........................ Equation 2

Solving equation(1 ) and equation (2) simultaneously

using elimination  method,

multiply equation (2) by 2.

2a - 2b = 58.................... Equation 3

Substract equation 3 from equation 1

2a - 2a -5b-(-2b) = 100-58

0 - 5b+2b = 42

-3b = 42

b = 42/-3

b = -14.

Substitute the value of b into equation 2

a - (-14) = 29

a +14 = 29

collect like terms

a = 29-14

a = 15.

Hence, a = 15, b =-14

ANSWER CORRECTLY !!!!!! WILL MARK BRIANLIEST !!!URGENT !!!!!!!

Answers

Angle EHF is congruent to the angle HFG

Answer:

angle EHF is congruent to angle HFG

Step-by-step explanation:

Find the volume of the cylinder. Round your answer to the nearest tenth.

___ pi ≈ ___ cm ^3

Answers

Answer:

21 because 7 x 3 is 21

Step-by-step explanation:

please help!! i'll give brainliest and 5 stars

Answers

Answer:

I believe its G. 2x<8

Step-by-step explanation:

An open circle means that it is only less than OR more than, and since the arrow is pointing towards the left, it means that it is less than 8. I really hope this helps!

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