Solve the simultaneous equation
4x-y=9
2x-3y= -23

Answers

Answer 1

Answer:

x = 5

y = 11

Step-by-step explanation:

y = 4x - 9

2x -3(4x - 9) = -23

2x - 12x + 27 = -23

-10x = -23 -27

-10x = -50

minus cancels out

x = 5

y = 4(5) -9

y = 20 - 9

y = 11


Related Questions

Can someone please help me

Answers

D. 97 and 83 because it equals 180

Answer

7 and 83

Step-by-step explanation:

Please solve
(2x^2 +x+4) (x+7) = 6x^3+29x^2+47x+28
with explanation
ASAP!!!
On a time crunch!!!!!

Answers

Answer: x = 0

Step-by-step explanation:

Subtract 6x^3+29x^2+47x+28 from both sides:

(2^2 + x + 4) (x - 7) - 6x^3+29x^2+47x+28

(6x^3+29x^2+47x+28)-6x^3+29x^2+47x+28

= -4x^3 - 14x^2 - 36x = 0

Now factor the left side:

-4x^3 - 14x^2 - 36x = 0

(-2x) (2x^2 + 7x + 18) = 0

Now set the factors equal to 0

-2x = 0 or 2x^2 + 7x + 18 = 0

x = 0

Please help, I have been stuck for a while, it is about trig.

Answers

Answer: x=28, y=14

Step-by-step explanation:

This article gives the formula for finding the sides of a 30-60-90 triangle. https://blog.collegevine.com/complete-guide-30-60-90-triangle/

The gist of it is that the hypotenuse is 1, the short side is 2, and the long side is root3. Since there was a 14 with the root3, I multiplied the 1 and 2 for the other sides by 14 to get 28 and 14.

b) A first-time house buyer can make 240 monthly payments of £675 to repay the mortgage. How many monthly payments are required if she can pay £600 per month?

Answers

she would need 270 payments

PLEASE HELP NOBODY KNOWS ? Mhmh

Answers

Answer:

76%

Step-by-step explanation:

Times the decimal by 100 to get a percent

basically moving the decimal 2 spaces to the right.

ill mark brainlistn plsshelp

Answers

Answer:

the answer is 18 because you have to multiply 6 times 3 and get 18

¿Qué porcentaje de niños prefieren la materia de español? Considera  que los 9 alumnos son igual al 100 %?​

Answers

Answer:

hold yo ablo espanol

Step-by-step explanation:

According to a recent poll on the Prevention magazine Web "Most people (56%) reported that even though they are overweight, their doctor never discusses the role of weight in leading a healthy life. Only 14% indicated that it was not an issue because they are already in good shape." The Prevention magazine survey results are provided using _____ to present the statistics.

Answers

Answer: text presentation

Step-by-step explanation:

The results of the Prevention magazine survey are provided using the text presentation to present the statistics.

Text presentation of data simply refers to the presentation of data in words, and sentences. It enables the researcher present qualitative data which cannot be done using graphics or tables.

need help pleaseeee !!!

Answers

Answer:

A (0,8)

B (1,4)

C (2,2)

D (3,1)

What is the percent increase from 50 to 74?

Answers

Answer:

67.57%

Step-by-step explanation: 50 is 67.57% of 74.  

HELP OR I EAT YOUR COOKIES (5TH GRADE MATH)
Lamont's empty backpack weighs 2 1/2 pounds. He puts 4 notebooks in it that each weigh 15 ounces. How many pounds does Lamont's backpack weigh now?

Answers

The answer is 6.252 pounds.

2 1/2 as a decimal is 2.5, and 15 ounces is equal to 0.938 pounds. Since there are 4 notebooks, you multiply 0.938 by 4, which is 3.752. Now, you just add 2.5+3.752=6.252

HELP PLSS I DONT WANNA FAIL

Answers

Answer: 1/2 and 3/6

Explanation: 1/2 is equal to 3/6 because if you divide both 3 and 6 by 2 it’s 1/2

Not sure about 4

Consider the function given below.

Answers

you have to put a picture of the problem

Substitute t = 3 and t = 6 to determine if the two expressions are equivalent. 3 (2 t + 5) 6 t + 15 Which statements are true? Select the three correct answers. The value of both expressions when t = 3 is 33. The value of both expressions when t = 3 is 23. The value of both expressions when t = 6 is 41. The value of both expressions when t = 6 is 51. The two expressions are equivalent. The two expressions are not equivalent.

Answers

Answer:

If t= 6

3 (2 x 6 + 5) 6 x 6 + 15

3 (12+5) 36 + 15

3 x 17 =51

= 51

The value of both expressio

Step-by-step explanation:

The value of both expressions when t=6 is 51

When t = 3

3(2 x 3 + 5) 6 x 3 + 15

3 (6 +5) 18 + 15

3 x 11 =33

= 33

The value of both expressions when t= 3 is 33

Answer:

A. The value of both expressions when t=3 is 33

D. The value of both expressions when t = 6 is 51.

E. The two expressions are equivalent.

Step-by-step explanation:

Solve for x:
X х+ 9 = 5x — 11

Answers

Answer:

5

Step-by-step explanation:

   x+9-(5*x-11)=0

  -4x + 20  =   -4 • (x - 5)

  -4   =  0

x-5 = 0

Add  5  to both sides of the equation :

                     x = 5

please help on this question i give brainliest

Answers

Answer:

1. 9 bounds of carbon dioxide

2.  27 bounds of carbon dioxide

Step-by-step explanation:

So let's find a unit rate: 1 to 9

"Why is it 1:9?"

If I can find divide 72 pounds into 8 hours? What would I find? You would find the pounds for each other

Example: 72/8=9. So If 9 carbon dioxide per hour. I can do 3 hours is 27 pounds of carbon dioxide.

So to sum it up, 72/8=9 so 1:9 can be used to figure out any amount of pounds used in a certain number of hours. So If 3 hours, then 27 pounds.

Answer:

1. 9 pounds of carbon dioxide

2. 27 pounds of carbon dioxide

Step-by-step explanation:

Well, I just know it.

The table shows the number of words per minute Josylyn can type. What is the missing value?

Answers

Answer:

52

Step-by-step explanation:

First, we want to see how we get from 104 to 156.

Looks like we add 52 to get the next.

104 + 52 = 156

156 + 52 = 208

Logically if we want to go back, we simply subtract 52.

104 - 52 = 52

Answer:

52

Step-by-step explanation:

Find the measure of AB *

14 cm
24 cm
10 cm
140 cm

Answers

Answer:

10 cm

Step-by-step explanation:

Because it is a parrallogram and by its property it will be 10

Please help

Look at picture and match

Answers

Answer:

It is the same order

Step-by-step explanation:

A=1/2bh triangle

A=bh parallelogram

A=1/2(b1 + b2)h trapezium

Answer:

Step-by-step explanation:

A=1/2bh =triangle

A=bh= parallelogram.

A=1/2(b1-b2)h=trapezoid.

Please help me find this

Answers

Answer:

i think 178 or 156

Step-by-step explanation:

10x6= 60

6x8=48

6x8=48

6x5=35

add all answers= 191

a - (n+y) = 10y + 32
solve for y

Answers

Answer:

Step-by-step explanation:

y= -32/11+ A/11 - n/11

What the degrees measure for 5/9 of a circle

Answers

Answer:

200

Step-by-step explanation:

5*360/9=200

what is the answer? help me

Answers

The answer that I would choose would be C.

please help me its due later today

Answers

Answer:

y

___

2

1

-2

-1

in that order, hope this helps :)

Answer:

a) y=2

b) y=1

c) y= -1

d) y= -2

Step-by-step explanation:

Help ASAP ASAP

Help asappp

Answers

Answer:

-3.9

Step-by-step explanation:

y/0.3 - 1.4= -14.4
•0.3. •0.3
y-1.4= -4.32
+1.4= +1.4
y= -2.92

pencils cost 2 dollars each. Rulers cost 3 dollars each. Edith buys p pencils and r rulers. The total cost is T dollars. What is the formula for T in terms of p and r​

Answers

(2 x p) + (3x r ) = T that would be the equation

A bulletin board is 11 feet by 6 feet. The area of the board is what square feet.​

Answers

Answer:

66 feet sq.

Step-by-step explanation:

Eleven times six would be sixty-six.

Break up 11 into its tens and ones

11*6 =60

1*6 =6

Add the two, 60+6 =66

What is the approximate area of the shaded sector in the circle below?

Answers

Answer: I believe the answer is 51 inches squared

Step-by-step explanation:

Suppose that you live in a community that has 125,000 households. Among these households, 50,000 have traditional landline telephones while the remaining 75,000 only use cellular and / or VOIP telephones. We are going to select 100 households from your community at random without replacement. The first household selected does not have a traditional landline telephone. What is the probability that the second household selected will have a traditional landline telephone

Answers

Answer:

0.4 = 40% probability that the second household selected will have a traditional landline telephone

Step-by-step explanation:

A probability is given by the number of desired outcomes divided by the number of total outcomes.

We have that:

125,000 households

50,000 have traditional landlines telephones.

The first household selected does not have a traditional landline telephone.

Now we have 125000 - 1 = 124,999 households, and 50,000 have traditional landlines telephones.

What is the probability that the second household selected will have a traditional landline telephone

[tex]p = \frac{50000}{124999} = 0.4[/tex]

0.4 = 40% probability that the second household selected will have a traditional landline telephone

Write down in figures the number forty one thousand and ninety six.

Answers

Answer:

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Step-by-step explanation:

Answer:

41,096

Hope it helps

Please mark me as the brainliest

Thank you

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