solve the simultaneous equation plz x

Solve The Simultaneous Equation Plz X

Answers

Answer 1

Answer:

x=4,y=3

Step-by-step explanation:

x=19-5y if we transpose equation 2 for x.

Plug that into equation 1

4(19-5y)+3y=25

76-20y+3y=25

76-25=17y

51=17y

y=3

Plug y=3 into equation 2

x+5(3)=19

x=19-15=4

Answer 2
Answer :Value of x is 4 Value of y is 3 Explaination :

We are having two equations,

4x + 3y = 25 (Equation No 1)x + 5y = 19 (Equation No 2)

From Equation No 2 :-

>> x + 5y = 19

>> x = 19 - 5y

From Equation No 1 :-

Substitute here the value of x which we got above as (19 - 5y).

>> 4x + 3y = 25

>> 4 (19 - 5y) + 3y = 25

>> 4 × (19 - 5y) + 3y = 25

>> 76 - 20y + 3y = 25

>> 76 - 17y = 25

>> -17y = 25 - 76

>> -17y = -51

>> 17y = 51

>> y = 51 / 17

>> y = 3

Finding out value of x :-

>> x = 19 - 5y

>> x = 19 - 5(3)

>> x = 19 - 5 × (3)

>> x = 19 - 15

>> x = 4


Related Questions

In a random sample, 3 of 400 computer chips are defective. Based on
the sample, how many chips out of 100,000 would you expect to be
defective?

Answers

Answer:

750 of 100,000 chips would be expected to be defective.

Step-by-step explanation:

(3/400) and (?/100,000)

100,000 ÷ 400 = 250.

Multiply 250 by 3 to find the number of defective chips.

250 x 3 = 750.

A rectangular prism has a length of 12 centimeters, a width of 6 centimeters, and a height of 9 centimeters. A cross section is formed by the prism and a plane that intersects the prism as shown. Find the area of the cross section.

Answers

If you take 12 centimeters then divide that by 2 square, then multiply the width 6 centimeters, and the height 9 centimeters, then multiply all of that by 12, the answer is 72.

Therefore the area of the cross section is 72.

Find the first four terms of the sequence given by the following.
an= 9(2)^-1,
n=1, 2, 3...

Answers

Answer:

See this attachment...

Step-by-step explanation:

Your answer dear

hope it's helpful to you

What is the principal square root of /25?
5
25
50
125

Answers

Answer:

5

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

ESCRIBE LA EXPRESION ALGEBRAICA : Paul tenía S/ e. Compró un libro y recibió S/ 3 de vuelto. ¿Cuánto costó el libro en términos de e? *

Answers

Answer:

p(e)=e-3

Step-by-step explanation:

De acuerdo a la información proporcionada, sabes que Paul tenía una determinada cantidad e y al comprar el libro recibió 3 de vuelto, lo que significa que el precio del libro sería igual a restar 3 de la cantidad que tenía al inicio, lo cual se puede expresar de la siguiente forma:

p(e)=e-3, donde

p es el precio del libro

e es la cantidad que Paul tenía al inicio

I need this the answer to 2/7 × 5/6

Answers

Answer:

5/21

Step-by-step explanation:

i mutiplyed

Carlos has read 45% of his book. If his book has 480 pages, how many pages has he read?

Answers

Answer is 216 pages read. Equation if needed would be p=.45*480

5. A water tank is in the shape of a right circular cylinder with a height of 20 feet and a volume of 320pi cubic feet. What is the diameter, in feet, of the water tank? ​

Answers

Answer:

8 ft.

Step-by-step explanation:

V = Bh        B = area of the base           h = height

The base is a circle, so [tex]B = \pi r^{2}[/tex]

320π = [tex]\pi r^{2} (20) = 20\pi r^{2}[/tex]

[tex]r^{2} = \frac{320\pi }{20\pi } = 16[/tex]

r = 4

d = 8 ft.

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Answers

C. The initial amount of money in the account

Answer:

C

Step-by-step explanation:

250 represent the amount of money that they started off with

1.05 represent how much the money in the account is increasing by

and x represent the amount of months that have passed

write the equation (3,5) in standard form

Answers

Answer:

We can write out 3! (three factorial) as 3x2x1, and we can write out 5! as 5x4x3x2x1. This means that, since 3x2x1 is on the top and the bottom of the fraction, it cancels out. This leaves us with 1 on top, and 4x5=20 on the bottom.

Step-by-step explanation:

can you please help me with my question

Tina is making a frame for a picture she drew. The length of the picture is 11 1/9 inches, and the width of the picture is 7 1/4 inches. How much longer is the picture than it is wide? (Need ASAP please!)

Answers

Answer:

3 31/36 inches

Step-by-step explanation:

11 1/9 = 100/9

7 1/4 = 29/4

100/9 = 400/36

29/4 = 261/36

400/36 - 261/36 = 139/36

139/36 = 3 31/36

I seem to be getting my questions wrong or be going on the wrong trail. Can someone help me decode this?

Answers

Answer:

A=4

B=3

C=2

D=1

Step-by-step explanation:

I need help please, I will give brainliest to the first person that answers

Answers

Answer:

it is C

Step-by-step explanation:

Square root of -24 to the nearest integer

Answers

the answer is 5

explanation: sq rt of -24 equals 4.8

HELPPPPPPP ASAP BRAINLIEST FOR CORRECT ANSWER

Answers

Answer:

12

Step-by-step explanation:

12*6.5=78

44-12=32

32*4=128

128+78=206

Help!
This is for Patterns, Functions, and Algebra!

Answers

you didn't ask the question

You randomly chose a marble from a har. The jar contains 3 red marbles, 10 blue marbles, 8 green marbles, and 4 yellow marbles. Which is the probability of choosing a blue marble?

A. 10/27

B. 2/5

C. 1/5

D.8/25

Answers

B. 2/5

All marbles together is 25. the fraction would be. 10/25. The fraction simplified would be 2/5
(Sorry if this explanation isn’t good. This is my first time answering)

The circumference of a circle is 9 cm. What is the diameter?

Answers

Answer: [tex]\frac{9}{\pi } \\or\\2.86[/tex]

Step-by-step explanation:

[tex]C=\pi d[/tex]

[tex]9=\pi d\\\frac{9}{\pi } =d\\[/tex]

Solve these simultaneous equations:

2x + 4y = 38

7x - 4y =7

Answers

Answer:

Step-by-step explanation:

Answer:

x=5, y=7

Step-by-step explanation:

2x+4y= 38

+7x-4y= 7

9x= 45

9x/9= 45/9

x=5

2x+4y=38

2(5)+4y= 38

10+4y= 38

-10 -10

4y= 28

4y/4= 28/4

y=7

Lines a and b are perpendicular. Which statements below must be true? Select all that apply. The slopes of lines a and b are reciprocals Line a and line b intersect at their midpoints. When the slopes of lines a and b are multiplied, the product is −1. Line a and line b intersect to form four right angles. The slopes of lines a and b are equal. The slopes of lines a and b are opposites

Answers

Answer:

When the slopes of lines a and b are multiplied, the product is −1.

Line a and line b intersect to form four right angles.

Step-by-step explanation:

Given

Perpendicular lines a and b

Required

Select the true statements

Represent the slope of line a with [tex]m_1[/tex] and the slope of b with [tex]m_2[/tex].

The condition for perpendicularity is:

[tex]m_1 * m_2 = -1[/tex]

Solving further:

[tex]m_1 = -\frac{1}{m_2}[/tex]

To solve further, we need to analyze each of the given options

(a) This is not true because the slope of perpendicular lines are not reciprocal

(b) This is also not true because perpendicular lines do not necessarily have to intersect at their midpoints

(c) This is true because of the condition stated above: [tex]m_1 * m_2 = -1[/tex]

(d) This is also true because perpendicular lines form right angles when they intersect

(e) This is not true because of the condition stated above: [tex]m_1 = -\frac{1}{m_2}[/tex]

(f) This is not true because of the condition stated above: [tex]m_1 = -\frac{1}{m_2}[/tex]

The product of the slope of the perpendicular lines is negative of one. Then the correct options are B and C.

What is the linear system?

It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.

Lines a and b are perpendicular.

Then the product of the slope of the perpendicular lines is negative of one. That is given as

[tex]\rm m_1*m_2 = -1[/tex]

a.  The slopes of lines a and b are reciprocals Line a and line b intersect at their midpoints. This is false.

b.  When the slopes of lines a and b are multiplied, the product is −1. This is true.

c.  Line a and line b intersect to form four right angles. This is true.

d.  The slopes of lines a and b are equal. This is false.

e.  The slopes of lines a and b are opposites. This is false.

More about the linear system link is given below.

https://brainly.com/question/20379472

13.8ft
15.6ft
23.4ft
46.8ft

Answers

Answer:

it is 15.6ft because you need to add 7.8+7.8= 15.6ft

Which of the following is used to inscribe a square in a circle?
A. Copy the chord that runs through the center of the circle.
B. Construct a perpendicular bisector of the diameter of the circle.
C. Use the radius length to find four vertices inscribed on the circle.
D. Construct a right angle using the radius of the circle and a tangent line.

Answers

Answer:

The option which is used to inscribe a square in a circle is option B

B. Construct a perpendicular bisector of the diameter of the circle

Step-by-step explanation:

The steps required to inscribe a square in a circle are;

1) Draw the circle using a compass

2) Draw the diameter of the circle, that passes through the center of the circle with a straight edge label the endpoint of the diameter X and Y

3) Construct the line perpendicular to the diameter of the circle and label the endpoints as A and B

The figure formed by joining the endpoints X, Y, A, and B is the inscribed square of the circle

Therefore, the correct option is to construct a perpendicular bisector of the diameter of the circle.

Draw the polygon with the given in a coordinate plane (0,4) ( 10,8) ( 7,4) ( 10,2 ) ( 5,0)

Answers

Answer:

Step-by-step explanation:

Answ

Naäamlaa. in faDlik. shukran. äafwan. aläafw. arjuu almaädhirasabaaH alkhayr.

please help me i need it

Answers

Answer:

n umber 3 is b and 4 is d

Step-by-step explanation:

The inequality -2(x + 10) > 75 says the same thing
as - 2x - 20 > 75. I can multiply by -2 on the left
side without reversing the inequality symbol
True
False

Answers

Answer: False. When multiplying or dividing by an negative inequality you flip the sign.

Step-by-step explanation:

A shelf for bowling balls can support 100 pounds. If a red bowling ball weighs 6 pounds and a blue bowling ball weighs 10 pounds, can the shelf support 4 red bowling balls and 6 blue bowling balls? Write the total weight of the bowling balls.

Answers

Answer:

yes

84

Step-by-step explanation:

Answer:

yes, 84 pounds

Step-by-step explanation:

4 red balls would be 24 pounds

6 blue would be 60 pounds

A circle with radius of \greenD{1\,\text{cm}}1cmstart color #1fab54, 1, start text, c, m, end text, end color #1fab54 sits inside a \blueD{3\,\text{cm} \times 3\,\text{cm}}3cm×3cmstart color #11accd, 3, start text, c, m, end text, times, 3, start text, c, m, end text, end color #11accd rectangle. What is the area of the shaded region?

Answers

Answer:

5.86cm²

Step-by-step explanation:

Area of the shaded region = Area of the rectangle - Area of the circle

Area of rectangle = Length * Width

Area of rectangle = 3cm * 3cm

Area of rectangle = 9cm²

Area of the circle = πr²

Given radius r = 1cm

Area of the circle = 3.14(1)²

Area of the circle = 3.14cm²

Area of the shaded region = 9 - 3.14

Area of the shaded region = 5.86cm²

Answer:

5.86cm²

Step-by-step explanation:

Area of the shaded region = Area of the rectangle - Area of the circle

Area of rectangle = Length * Width

Area of rectangle = 3cm * 3cm

Area of rectangle = 9cm²

Area of the circle = πr²

Given radius r = 1cm

Area of the circle = 3.14(1)²

Area of the circle = 3.14cm²

Area of the shaded region = 9 - 3.14

Area of the shaded region = 5.86cm²

PLZ HELP IF ITS CORRECT I WILL MARK U BRAINLIEST

Answers

Answer:

The answer is 45

Step-by-step explanation:

First, you find what is half of 30 by dividing 30 by 2

30/2 = 15

Then you add 15 to 30 since you have to increase it by 1/2

30 + 15 = 45

I hope this helped and have a great day!

The correct answer is 45

this quiz is due in a hour I'll up the points to 25

Answers

Answer:

The sin A expressed in ratio form is [tex]\frac{\sqrt{6} }{4}[/tex]

Step-by-step explanation:

From the given right angled triangle diagram, sin A is calculated as follows;

[tex]sin \ A = \frac{Opp}{hypo} \\\\sin \ A = \frac{2\sqrt{6} }{8} \\\\sin \ A = \frac{\sqrt{6} }{4}[/tex]

Therefore, the sin A expressed in ratio form is [tex]\frac{\sqrt{6} }{4}[/tex]

Brand XYZ dog food costs $36 for 15 pounds of dog food . What is the cost per pound?

Answers

Answer:

$2.40

Step-by-step explanation:

36÷15=2.4

since we are talking about money you add a zero.

Hope this helps

Cost of the dog food per pound is $2.4

What is cost?

Cost is the value of money that has been used up to produce something or deliver a service

Cost of 15 pound of dog food = $36

Cost of 1 pound of dog food = [tex]\frac{36}{15}[/tex]= $2.4

Hence, the cost of 1  pound of dog food is $2.4

Learn more about cost here

https://brainly.com/question/13910351

#SPJ2

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