elimination method -2x-7y=13 and 3x+6y=15​

Answers

Answer 1

Answer:

The answer is (61/3), (-23/3)

Step-by-step explanation:

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.

Hoped this helped!


Related Questions

what is the value of 4|b| - |D|

Answers

Answer:

4b-d

Step-by-step explanation:

How much work does a horse do while moving a wagon 15 meters with a pulling force of 100N?

Answers

1500 Newton’s when finished

which number is equal to 15 a)0.015 b)1.5 c)150/100 d)3/20

Answers

Answer:

c

Step-by-step explanation:

Answer: 150/100

Step-by-step explanation:

Solve for x.

x/8 -1.1= -13.9

Answers

Answer:

x(x-8) + 12 = 0.

Step-by-step explanation:

solve for “x”.

2x = 5

thanks to whoever helps!! :)

Answers

Answer is 2.5 bc u have to divide 5 by 2 then u get ur answer

Answer:

2.5

Step-by-step explanation:

In this equation x is equal to 2.5. I got this answer by dividing both sides of the equation by 2, since we do the opposite operation of how the equation is set up. Have a great day! :)

a medium egg has a mass of 50 grams what is the mass of a 8 medium egg
a 40 l
b 400 g
c 40 g
d 400 kg

Answers

Answer:

400 grams.

Step-by-step explanation:

The mass of one medium egg is 50 grams. To solve for 8 medium eggs. Multiply.

50 * 8 = 400

400 grams.

A bird was sitting 12 feet from the base of an oak tree and flew 20 feet to reach the top of the tree. How tall is the tree?

Answers

Answer:

It should be 12+20= 32 ft

Step-by-step explanation:

What is the value of x? Use an informal argument to justify your answer *

Answers

Answer:

68°+47°+ x = 180°

115°+ x = 180°

115°-115°+x = 180°-115°

x = 65°

hope it's helpful ❤❤❤❤

THANK YOU.

PLEASE, PLEASE HELP D:
write the linear equation given :

1. slope = 1/4; y-intercept =7

2. slope = -3; y-intercept = 2/3

3. slope = 2/3; y-intercept = 2/3

4. slope = -2; y-intercept = -1/2

5. slope = -3/4; y-intercept = -3

Answers

Answer:

1. y =1/4x + 7

2.y =-3x + 2/3

3. y =2/3x + 2/3

4.y =-2x - 1/2

5.y =-3/4x -3

Step-by-step explanation:

By using the slope- intercept form of the equation, y=mx + b, where m=slope and b=y-intercept, you can substitute the values of slope and the y-intercepts into the formula y=mx + b

H = {(2, 5), (3, 5), (4, 5), (5, 5), (6, 5)} Is H a function and why?

Answers

Answer:

h is a function

Step-by-step explanation:i know that h is a function i just dont know why

Please I need help!!!!

Answers

Answer:

144g

Step-by-step explanation:

Make a ratio:

15:108

20:x

cross multiply

15x = 2160

x = 144

Complete the statements.

Graph ____has one real root.
Graph ____ has a negative discriminant.
Graph ____has an equation with coefficients

Answers

Is there supposed to be a picture I’m sorry I don’t see it
Graph b has one real root
Graph C has a negative discrimination
Graph A has an equation with coefficients

ILL GIVE BRAINLIEST AND EVERYTHING ELSEEE HELP

Answers

Answer:

The Second One

Step-by-step explanation:

Commutative Property

what does the a in y=a(1+r)x represent?

Answers

Answer:

The function is of the form y = a(1 − r)t, where 1 − r < 1, so it represents exponential decay. Use the decay factor 1 − r to find the rate of decay. Write an equation. Solve for r.

The "a" in the expression y = a (1+r)ˣ represents the initial amount.

What is the expression?

An expression in math is a sentence with a minimum of two numbers or variables and at least one math operation. This math operation can be addition, subtraction, multiplication, or division.

Given, a exponential expression  y = a (1+r)ˣ

The exponential growth can alternatively be calculated using the formula f(x) = a(1 + r)ˣ, where the function is denoted by the f(x) term. The initial value of your data is represented by the variable. The growth rate is represented by the r variable.

Therefore, the initial amount is been represented by "a" in the given expression.

Learn more about expressions here:

https://brainly.com/question/14083225

#SPJ2

Write an equation of the line that passes through the pair of points. (0, 1), (5, 3)​

Answers

Answer:

Step-by-step explanation:

(3 - 1)/(5 - 0)= 2/5

y - 1 = 2/5(x - 0)

y - 1 = 2/5x - 0

y = 2/5x + 1

1) 6c + 7 = 8c - 3

2) -8 (4 + 9x) = 7 (-2 - 11x)

Answers

Answer:

c=5,x=18/5 or 3.6

Step-by-step explanation:

An arithmetic sequence has this recursive formula:
a1=9
an=an-1 -3
What is the explicit formula for this sequence?
A. an=9+(n-1)(-3)
B. an=-3+(n-1)9
C. an=9+(n-3)(-1)
D. an=-1+(n-9)(-3)

Answers

Answer:

The correct answer is:

Option A. a_n=9+(n-1)(-3)

Step-by-step explanation:

Given that

a1 = 9

[tex]a_n = a_{n-1}-3[/tex]

We can see that in recursive formula the next term is being obtained by subtracting 3 from previous term

That means that the common difference is -3

We also know the first term

The general form of explicit formula for an arithmetic sequence is:

[tex]a_n = a_1 + (n-1)(d)[/tex]

We know that a1 = 9 and d = -3

Putting the values we get

[tex]a_n = 9+(n-1)(-3)[/tex]

Hence the correct answer is:

Option A. a_n=9+(n-1)(-3)

What is the solution to the inequality? 6x - 5 > -29


A. x 4

C. x > -4

D. x < 4

Answers

Answer: A

Step-by-step explanation:

The population of a town is 132,00. The population increases 4% a year. What will be the population in 8 years?

Answers

9514 1404 393

Answer:

  180,651

Step-by-step explanation:

Each year, the population is multiplied by the factor 1 + 4% = 1.04. After 8 years, it will have been multiplied by that factor 8 times. We indicate repeated multiplication like that using an exponent.

  population in 8 years = 132,000 × 1.04^8 ≈ 180,651

PLEASE HELP ASAP! ILL MARK BRAINLEST i feel like i’m missing one

Answers

Answer:

The ans is correct. But I think C is also correct.

Step-by-step explanation:

Which function has a domain of all real numbers?

Answers

Answer:

C

Step-by-step explanation:

This is totally wrong lol

Maria is reading a book that has 237 pages. She
already read some of it last week. She plans to read 30
pages tomorrow. By then, she will be of the way
through the book. How many pages did Maria read
last week?

Answers

Answer:

49 pages

237/3 = 79.

30+49 = 79

So the answer is B because your are not suppose to do that.

On a coordinate plane, point A is (1, negative 2), point B is (2, 1), point C is (3, 1.5), point D is (4, 2).
Point A is rotated 90° counterclockwise around the origin.


Which point is the same distance from the origin as point A?
B
C
D
O

Answers

Answer: A.) B

Step-by-step explanation: i hope this helps you out!

PLEASE HELP, MARKING BRAINLIST!

Answers

Answer:

2 miles

Step-by-step explanation:

because they completed the loop twice:1x2=2

Answer:

tw0 miles.

Step-by-step explanation:

if its 0ne mile l0ng, and the went around twice, it w0uld be tw0 miles :>

The triangles are congruent. Find the measure of x.

Answers

Match up the sides for each triangle using the little marks through the sides

1 to 1, 2 to 2 and 3 to 3

When you do this you see that x corresponds to c on the first triangle.

The 3 angles in a triangle = 180.

Find c by subtracting A and B from 180

C = 180- 29-63 = 88

Now x = c so x = 88

The answer is C. 88

One less than five times a number is fewer
than twenty-four.

Answers

Answer:

x < 5

Step-by-step explanation:

[tex]5x - 1 < 24\\5x < 25\\x < 5[/tex]

Answer:

any number under 5

Step-by-step explanation:

5(5) -1 =24

so anything under that would equal fewer than 24

Is this what you're asking?

how many months give you 27 years​

Answers

Answer:

324 Months

Step-by-step explanation:

Answer:

324 months according to goggle.

80^2 - 45^2 = a^2 - b^2

ans pls in working, thnx in advance

Answers

Answer:

[tex]{a}^{2} - {b}^{2}= {(80)}^{2} -{(45)}^{2} \\(a + b)(a - b) = (80 + 45)(80 - 45) \\ = 125 \times 35 = \boxed{ 4375}✓[/tex]

4375 is the right answer.

Please help me!! I'll give Brainliest!! Fairly simple Geometry question!

Answers

the answer is A !!! hope this helped :)))

Answer:

Option A

Step-by-step explanation:

Let's look at the options

A. Equal side lengths and equal diagonal lengths.

Correct

B. Impossible without angle measure.

Incorrect. Option A gives us solution.

C. Equal side lengths and diagonals bisect each other.

Incorrect. This could be a rhombus.

D. Equal side lengths and diagonals.

Incorrect. Diagonals will have a  greater length.

his recipe makes 6 pancakes.
Sanjay follows the recipe but wants to make 24 pancakes.
How much of each ingredient does he need?
g flour
tsps baking powder
tbsps sugar
mL milk
eggs
tbsps oil

Answers

Times everything by 4.
Other Questions
72 pens are stored in 24 containers. Which of the following expresses the unit rate for this scenario?A 72 pens per containerB 24 pens per containerC 3 containers per penD 3 pens per container(PLZZZZZZZZZ I NEEEDDD HELP) IM IN THE 6TH GRADE PLZZZ I NEED HELP How much did inflation increase during President Carters term? by about 7 percentage points by 10 percentage points by about 15 percentage points by 5 percentage points Chandler's salary used to be $161,280. After changing the amount of time he works, he has begun earning $169,344. By what percent did Chandler's salary increase?Ack please help with this, and please please don't just put some random answer, just to get points, I really have no idea how to do this. Beth walked 10 7/8 miles one week. she walked 2 1/4 fewer miles the following week. About how many miles did she walk the second week round each mixed number to the nearest whole number. Suppose a ship sinks in the middle of the ocean and it has a cargo of 28,000 rubber ducks. Instead of the ducks staying where the boat sunk at, the rubber ducks began to find their way to different coastlines as shown in the picture below. What do you think is causing the ducks to move in this pattern? What was the MOST important reason the builders of the transcontinental railroad recruited workers from China?A Immigrants from Europe were unwilling to work for low wages.B Immigrants from Europe lacked the skills to construct the railroad.C Immigrants from China were skilled workers and immigrants from Europe were unskilled workers.D Immigrants from China had fewer opportunities to seek other work than immigrants from Europe. The ancient Jews began their day at: The point (-6,-2) is located in quadrant How do historians synthesize evidence to draw conclusions?A. They use evidence only from secondary sources.B. They categorize primary and secondary sources.C. They determine how multiple sources differ.D. They rely only on eyewitness accounts. When 8 is added to a certain number and thesum is multiplied by 3, the result is 57.Find the number. Which equation represents the line that passes throughthe points (2, 3) and (4, 7)? Simplifying Radicals pls help with full calc Help ASAP Convert the measurement. Round to the nearest hundredth.6 feet=___ meters I need help on this please! you just need to do 6 of them I need help with answer 1 and 2 ASAP please!! The translation shown in the graph moves the figure to the right. What kind of translation is shown? find the height of the cylinder if the volume is 340, and the length is 3 please simplify- ee What is the relationship between an object and class in an OOP program?The object contains classes.The object and class are the same thing.The object is used to create a class.The object in a program is called a class. QUESTION 9 of 10: The skill set to predict the various aspects of the business several months or even years into the future is called: a) Supply chain management b) Forecasting c) Quality control