Solve the simultaneous equations.
Please help

Solve The Simultaneous Equations. Please Help

Answers

Answer 1

Answer:

x=1/2, y=4

Step-by-step explanation:

Double both sides of the top equation:

4x+6y=26

Now subtract boths sides of the second one from the first one:

(4x+6y) - (4x-y) = 26 - (-2)

7y = 28

so y = 4

4x-y=-2 so 4x-4=-2

4x=2

x=1/2


Related Questions

which of the following equations is an example inverse variation between the variables X and Y?

A.
[tex]y = \frac{x}{8} [/tex]
B.
[tex]y = \frac{8}{x} [/tex]

C.
[tex]y =8x[/tex]
D.
[tex]y = x + 8[/tex]

Answers

Answer:

B y=3/x From the given options option B is  showing  inverse variation between the variables x and y.

Answer:b

Step-by-step explanation:

PLEASE HELP WILL GIVE BRAINLIEST

Ari is designing a patio that will be 20 feet long and 16 feet wide. He makes a scale drawing of the patio using a scale of 1 inch to 4 feet.

The ratio of the area of the scaled drawing to the actual area of the patio is 1 square inch to _____ square feet.

Answers

1 square inch to 4 square feet. answer is 1/4
The answer is 4 inches by 5 inches

DUE TONIGHT, please help me i'm really confused and please show work.
I will mark Brainly

Answers

Answer:

this is linear equation correct?

Step-by-step explanation:

let me know i might be able to help

if joans assignment is to read 80 pages, and she has read 4/5 of her assignment, how many pages does she have left to read

Answers

Answer:

Pages(P)

Pages left to read(L)

Pages read(R)

L=P-R

R= 4/5 of 80

80/5=16

4*16=64

L=80-16

L=16

Step-by-step explanation:

1+2+3+4+5+6+7+8+9+012​

Answers

Using calculator
Answer=57

Answer:

57 is your answer......

SOMEONE HELP ME PLEASEEEEEE !

Answers

Answer:

123.6

Step-by-step explanation:

Find the area of the circle, because the four quarter circles add to one circle. The circle has a diameter of 24, so the area of it is 452.4. The square has an area of 24*24, so the area is 576. Subtract the area of the circle from the square, and you get 123.6. Hope this helps!

A function is a mathematical rule that.....
A. Has one or more exponential expressions
B. Can be graphed as a straight line
C. Sends every input to only one output
D. Sends every output to only one input

Answers

Answer:

B

Step-by-step explanation:

A function can be graphed as a straight line, as long as it isn't vertical.

Simplify:
(3p + 7c+ 8) + (2p – 3c + 1)

Answers

Answer:

5p + 4c + 9

Step-by-step explanation:

..............

Answer:

5p+4c+9

Step-by-step explanation:

3p+2p=5p

7c-3c=4c

8+1=9

put it all together to get 5p+3c+9

Write a note to a friend explaining how to use long
division to find the quotient.
2x2 – 3x – 5
x+1

Answers

Answer:

I believe it's 2x²-8x + 1

Step-by-step explanation:

Combine like terms

2x²- 3x - 5x + 1

2x²- 8x + 1

perfect square trinomial conditions

Answers

Step-by-step explanation:

step 1. an example of difference of squares (dos) is (x + y)(x - y) = x^2 - y^2.

step 2. dos must have only 2 square rootable terms and a "-" between them.

step 3. 196x^2 - 121y^2 = (14x + 11y)(14x - 11y) works!

step 4. 5x^2 - 245 = 5(x^2 - 49) = 5(x + 7)(x - 7) works!

step 5. 27w^5 - 75w = 3w(9w^4 - 25) = 3w(3w^2 + 5)(3w^2 - 5) works!

step 6. x^4 - 100y^2 = (x^2 - 10y)(x^2 + 10y) works!

Renee bought 7 potatoes at the supermarket. The shortest diameter of each, in centimeters, is shown below

Answers

Answer:

2, 3, 4

Step-by-step explanation:

Renee bought 7 potatoes at the supermarket. The shortest diameter of each,  

in centimeters, is shown below.

2, 3, 4, 4, 6, 6, 7

After Renee used one potato to make dinner, the median diameter of the remaining  potatoes was 5 centimeters. Which of these could be the diameter, in centimeters,  of the potato Reneetsed?

Solution:

The median of a group of numbers is the middle number when the group of numbers are arranged in a sorted manner, either ascending or descending.

The median of an even group of numbers, is gotten by taken the average of the two innermost numbers.

Given that the diameter of the potato as:

2, 3, 4, 4, 6, 6, 7

Given that after removing one potato, the median of the remaining  potatoes was 5 centimeters.

After removing one potato, the remaining would just be 6. 6 is an even number, hence the median would be the average of the 2 middle numbers.

To get 5 cm, it has to be the average between 4 and 6. This is only possible when a potato of diameter 2,3 or 4 is removed.

If potato with diameter 2 is removed, the remaining is 3, 4, 4, 6, 6, 7.

Median = (4 + 6) / 2 = 5

If potato with diameter 3 is removed, the remaining is 2, 4, 4, 6, 6, 7.

Median = (4 + 6) / 2 = 5

If potato with diameter 4 is removed, the remaining is 2, 3, 4, 6, 6, 7.

Median = (4 + 6) / 2 = 5

Solve the propotion
q/5 = 4/1

Answers

Answer:20

Step-by-step explanation: If u need help again: https://mathpapa.com/algebra-calculator.html

Answer:

q = 20

Step-by-step explanation:

q 4

5 = 1

4 x 5 = 20

On the number line bug A is moving in the positive direction from the point 0, and a bug B is moving in the negative direction from the point 0. The speeds of both bugs are constant. Both leave 0 at the same time, and three seconds later A has reached 18 and B has reached -15


If x is the point reached by A after t seconds, and y is the point reached by B after t seconds, express x and y in terms of t.

Answers

Answer:

x =6t

y = - 5t

The baseball team wants to buy new baseballs, and their budget is $225. Coach also had to
muy some new cones for $24 and new socks for the team for $32. If each pack of baseballs
most $42, how many packs can coach buy?

Answers

Answer:

4 packs

Step-by-step explanation:

Answer:

169

Step-by-step explanation:

When Martin graduates college, he is gifted $1,200 and puts the money into a savings account that earns 2.2% annual interest. How much money will Martin have in 2 years? How much money will Martin have in 5 years?

Answers

Answer:

2 years = 1252.80 5 years =1332

Step-by-step explanation:

1,200 x 2.2% = 26.4

26.40 x 2 = 52.80

1200 + 52.80 = 1252.80

26.40 x 5 =132

1200 + 132 =1332

A picture frame is 112 inches wider than the picture it holds. Let f represent the width of the frame. Let p represent the width of the picture. Which table represents the situation?

f = p + 1
p f
1 2
2 3
3 4

f = p + 12
p f
1 112
2 212
3 312

f = p + 112
p f
1 212
2 312
3 412

f = p + 3
p f
1 4
2 5
3 6

Answers

Answer:

 

f = p + 1 1/2

p f

1 212

2 312

3 41

Step-by-step explanation:

A picture frame is 112 inches wider than the picture it holds. Let f represent the width of the frame. Let p represent the width of the picture. Which table represents the situation?

Which of the following figures does not have a line of symmetry?

Answers

A is the answer.

All the figures have a line of symmetry, besides A.

Answer:

it should be C

help plsss(+Brainliest too.)
Here is a picture of a cube, and the net of this cube.

What is the surface area of this cube?

Answers

Answer:

the answer is 256

Step-by-step explanation:

Mark Me Brainliest Please.

4. JKLM is a parallelogram. Find JM.
J
к
8x + 4
4x + 20
M
L

Answers

Answer:

36

Step-by-step explanation:

8x + 4 = 4x + 20

8x - 4x = 20 - 4

4x = 16 divide both sides by 4

x = 4 and JM = 8x + 4 replace x with 4

8×4 + 4 = 36

Answer:

36

Step-by-step explanation:

8x + 4 = 4x + 20 ( being opposite sides of parallelogram)

8x - 4x = 20 - 4

4x = 16

x = 16 / 4

x = 4

JM = 8x + 4

=8 * 4 + 4

= 32 + 4

= 36

Hope it will help :)

0.000009 in scientific notation.

Answers

9x10^-6 because it’s 6 units to the left.

Answer:

9^-6

Step-by-step explanation:

Find the sum of the first 33 terms of the following series, to the nearest
integer.
2,8, 14, ...

Answers

Answer:

3234

Step-by-step explanation:

The series is arithmetic with a common difference = d = 6

First we need to find the 33rd term.  Use the formula [tex]a_{n} = a_{1} + (n - 1)d[/tex] where n = 33 and [tex]a_{1} = 2[/tex]

[tex]a_{33} = 2 + (33 - 1)6 = 2 + 32(6) = 194[/tex]

Now the formula for the sum of an arithmetic series is [tex]S_{n} = \frac{n(a_{1} + a_{n} )}{2}[/tex]

So, [tex]S_{33} = \frac{33(2 + 194)}{2}[/tex]

          = [tex]\frac{33(196)}{2}[/tex]

          = 3234


In a bag, there are 15 tickets bearing the numbers 1 to 15. One ticket is drawn at
random from the bag. Find the probability that the ticket drawn bears a number
multiple of 3.​

Answers

Answer:

1 in 5

Step-by-step explanation:

Multiples of 3 from 1 to 15:

3, 6, 9, 12, 15

Find the lowest multiple of 3.

Formula for probability:

Probability number is drawn/total

3/15

Convert it to simplest form.

1/5

I am not so sure about this, but I have seen people do this, hope I'm not wrong.

yes or no ? i need help

Answers

Answer:

Yes it is linear

Step-by-step explanation:

someonepleasehelp me asap
evaluate (8)-2(15-8)​

Answers

Answer:

-6

Step-by-step explanation:

You have to multiple -2 by 15 and -8 separately

8 - 2(15-8)

8 -30 + 16

24-30 = -6

PLease help
WILL GIVE BRAINLIEST

Answers

Answer:

41.472 m²

8.449m²

Step-by-step explanation:

c) scale facot is 7.2/5 = 1.44

the square scale factor is 1.44^2 = 2.0736

times 20 by this to get the area

2.0737x 20 = 41.472 m²

d) 2.8/6 = SF = 0.467

0.2178 x 38.8 = 8.449m²

Having emergency supplies ready is an important step in any preparedness plan. In the space below, draw an example of what your emergency supply pack would look like. Make sure to label each item so that others can see your materials.

Answers

Answer:

Emergency supplies are very important and it is very useful at times of need.

Step-by-step explanation:

Emergency supplies are a set of supplies that we may require at times when some situation or problem arises. During any situation which is not normal, these emergency supplies serves the purpose of life to one self.

Thus everybody should be prepared for the worst and should always keep an emergency supplies with them. These emergency supplies should contain all those item that we may require at times of need. It must contain :

-- a safety kit or a first aid kit

-- at least a gallon of water for drinking purposes and for sanitary purposes

-- a multi tool and a knife

-- a torch and batteries

-- emergency phone numbers and medical phone numbers

-- some clothes and weather resistance blankets

-- some copies of important documents

-- easy to cook and on perishable food items

-- two way radios

-- extra cash

-- maps

Cuatro meses después que se detuviera la publicidad, una compañia fabricante notifica que sus ventas han cai­do de 100.000 unidades por mes a 80.000. Si las ventas siguen un patron de decrecimiento exponencial, cuantas unidades habra despues de los siguientes dos meses?

Answers

Answer:

51,200 unidades

Step-by-step explanation:

Paso 1

Calculamos el porcentaje de disminución

= 100000 - 80000/100000 × 100

= 20000/100000 × 100

= 20%

Por lo tanto, el porcentaje de disminución cada mes = 20%

Paso 2

La fórmula de la disminución exponencial

y = a (1 - r) ^ t

a = 80.000

r = 20% = 0,2

t = tiempo en meses = 2

y = 80000 (1 - 0,2) ^ 2

y = 51.200 unidades

Usando una función exponencial, se encuentra que habra 71.554 unidades despues de los siguientes dos meses.

Una función exponencial decreciente tiene el siguiente formato:

[tex]A(t) = A(0)(1 - r)^t[/tex]

En que:

A(0) es la cuantia inicial.r es la tasa de desintegración.

En este problema:

Inicialmente, 100000 unidades por mes, o sea, [tex]A(0) = 100000[/tex].Cuatro meses después, 80000 unidades por mes, o sea, cuando [tex]t = 4, A(t) = 80000[/tex], e esto es usado para encontrar r.

[tex]A(t) = A(0)(1 - r)^t[/tex]

[tex]80000 = 100000(1 - r)^4[/tex]

[tex](1 - r)^4 = 0.8[/tex]

[tex]\sqrt[4]{(1 - r)^4} = \sqrt[4]{0.8}[/tex]

[tex]1 - r = 0.945742[/tex]

Por eso:

[tex]A(t) = A(0)(1 - r)^t[/tex]

[tex]A(t) = 100000(0.945742)^t[/tex]

Apos el siguinte dos meses, hay el mes 6, por eso:

[tex]A(6) = 100000(0.945742)^6 = 71554[/tex]

Habra 71.554 unidades despues de los siguientes dos meses.

A similar problem is given at https://brainly.com/question/14773454

Suggestions ???????????

Answers

the first blank should be 715

Match the numbers in scientific notation with the corresponding numbers in standard notation. 2.32E9

Answers

Complete question :

Match the numbers in scientific notation with the corresponding numbers in standard notation.

232,000,000

0.00000431

2,320,000,000

0.000000000000431

2.32E9

2.32E8

4.31E-13

4.31E-6

Answer:

2.32E8 = 232,000,000

2.32E9 = 2,320,000,000

Step-by-step explanation:

2.32E8 - - > 8 digits after the decimal point ; 232,000,000

2.32E9 - - > 9 digits after the decimal point ;

2,320,000,000

4.31E-13 - - > 13 preceeding 0's before digit '4' ; 0.000000000000431

4.31E-6 - - > 6 preceeding 0's before digit '4' ; 0.000000000000431

bdhskakaiaggsbsnasnbdbsjsjs simplify c^4/c^3

Answers

Answer:

Cancel the common factor of  c^ 4  and  c ^3 .

The answer is c

Step-by-step explanation:

Hope this helps! Have a nice day!

Answer:

I dont know but i am a expert

Step-by-step explanation:

i dont know but i am a expert

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