Solve each system by elimination or substitution.
2 = 4y - 3x , 5x = 2y - 3

Answers

Answer 1

Using elimination method, the solution of the given system of equations is (-4/7, 1/14)

A system of equation can be solved using:

graphical methodsubstitution methodelimination method

The given system of equations:

2 = 4y - 3x   ............   (1)

5x = 2y - 3  .............. (2)

Re-arrange the equations so that all variables are on the left sides:

2 = 4y - 3x  

⇔ -3x + 4y = 2   .......  (3)

5x = 2y - 3

⇔  5x - 2y = -3  ....... (4)

Choose one variable to eliminate. Let us choose y. Multiply equation (4) by 2, we get:

10x - 4y = -6   ....... (5)

Add equation (3) and (5)

-3x + 4y = 2

10x - 4y = -6 +

7x          = -4

 x          = -4/7

Substitute back  x = -4/7 into equation (3):

-3x + 4y = 2

-3.(-4/7) + 4y = 2

12/7 + 4y = 14/7

4y = 2/7

y = 2/28 = 1/14

Hence, the solution is (-4/7, 1/14)

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Related Questions

Identify the number as​ prime, composite or neither. If the number is​ composite, write it as the product of prime factors. 540

Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.

A. The number is prime.

B. The number is composite. Its prime factors written as a product are ( )

C. The number is neither prime nor composite.

Answers

Answer:B. The number is composite. Its prime factors written as a product are (5*3^3*2^2)

Step-by-step explanation:

Since 540 is an even number, that means it can be divided by 2. This means that the number is composite.

You can keep dividing it by 2 until you can't anymore.

Once you divide 540 by 2 twice, then you get 135.

You can divide it by 5 because the ones digit is 5.

Then you get 27, which is 3 times itself 3 times.

You finally multiply the numbers you divided by, and you get 2*2*5*3*3*3, which is 5*3^3*2^2.

Question 5 (2 points)
Natalie wants to make sure she has enough in her account to go out to dinner with her friends. When she views her online bank statement, her
current available balance is not showing. This is what she can see:
Current posted balance: $87.73
Pending withdrawals/debits: $97.68
Pending deposits/credits: $126.02
Available balance:
What is Natalie's current available balance?
Answer: $
Blank 1:

Answers

Natalie’s current available balance is $116.07.

To find current available balance, we need to subtract pending deposits/ credits with pending withdrawals/ debits.

Account Balance = Pending deposits / credits – Pending Withdrawals /debits

= $126.02- $97.68 = $28.34

Available Balance = Account Balance + Current Posted Balance

= $28.34 +$87.73 = $116.07

Current Available Balance = $116.07

The balance in checking or demand accounts that is available for use by the client or account holder is known as the available balance. The accessible balance of an account holder may not match the current balance. Any unfinished transactions are often included in the current balance.

Pending Deposit Credits: Pending check deposits that haven't been processed, haven't been credited to your account, or didn't have availability when we got them.

Pending Deposit Debits: Your account is put on hold for the transaction's amount until it is processed.

Hence Natalie’s current available balance is $116.07.

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Find the value of x

Answers

x=23

Gimme brainlliest

Step-by-step explanation:

or, x + 65° = 180° [ Being Straight line]

or, x = 180° - 65°

or, x = 115°

Therefore the value of x is 115° .

Now,

or, 4x = 4 × 115° = 460° .

Ashley has a deck that measures 22 feet by 11 feet. She wants to increase each dimension by equal lengths so that its area is tripled. By how much should she increase each dimension?

Answers

The dimensions of the decks increased by the 11 feet.

According to the statement

We have to find that the length by which we increase the dimensions.

So, For this purpose, we know that the

The Area is the amount of space occupied by a two-dimensional figure.

From the given information:

Ashley has a deck that measures 22 feet by 11 feet. She wants to increase each dimension by equal lengths so that its area is tripled.

Then

The shape of the deck is the rectangle then dimensions is 22 feet by 11 feet.

Then

Area of the deck with the given dimensions =  Length * Breadth

Area of the deck with the given dimensions =  22* 11

Area of the deck with the given dimensions =  242.

Then the dimensions increased by the x

Then

Area of the deck with the given dimensions =  Length * Breadth

Area of the deck with the given dimensions =  (22+x)* (11+x)

Area of the deck with the given dimensions =  242 + 22x+11x+x^2

Area of the deck with the given dimensions =  242 + 33x+x^2

Then according to given details:

x^2 + 33x + 242 = 3*242

x^2 + 33x + 242 = 726

x^2 + 33x = 726 - 242

x^2 + 33x = 484

x^2 + 33x - 484 = 0

After solving

The value of the x become

x = 11 and x = -44

Then second option be neglected.

Then the length increased by the 11 feet.

So, The dimensions of the decks increased by the 11 feet.

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m∠3=82.find m ∠4. i need help for my iready question

Answers

m4 = 98

since m1 = m3 and m3 = 82, m1 also equals 82
82 + 82 = 164
360 - 164 = 196
196/2 = 98


The Great Pyramid measures 756 feet on each side of the base and the height is 481 feet. Find the volume of the pyramid.

Answers

The volume of pyramid is 9.16×10⁷ feet³.

We are given the measure of each side of Great Pyramid, which will be it's length and width. Also, we are given height. The formula for calculation of volume of pyramid is -

Volume = (length×width×height)÷3

Keep the values in formula to find the volume of Great Pyramid

Volume = (756×756×481)÷3

Performing multiplication on Right Hand Side of the equation to find the volume of Great Pyramid-

Volume = 274908816÷3

Solving the Right Hand Side of the equation, by performing division, we get the volume of Great Pyramid -

Volume = 9.16×10⁷ feet³

The volume of Great Pyramid is 9.16×10⁷ feet³.

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Find each product or quotient.
-2.1 . (-3.5)

Answers

The product of  -2.1. (-3.5) is  7.35

The product of  (-2.1 ) and (-3.5) =  [tex]-2.1\times-3.5[/tex]

                                                    =  7.35

So, the product of (-2.1) and (-3.5) is 7.35.

What is the quotient?

The quotient is the number which is produced when we perform division operations on two numbers. Fundamentally, it is the result of the division method. There are four primary wordings utilized within the arithmetic division such as divisor, dividend, quotient and remainder.

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Suppose a triangle has sides a, b, and c, and let e be the angle opposite the side of length a. If cose < 0, what must be true? O A. a² + b² = ² O B. b² + c²> a² O c. b² + 2² ²​

Answers

In the given triangle the statement that holds true is [tex]b^2+c^2 < a^2[/tex]. Therefore, the option (c) is the correct option.

What are cosine formulas?

In the cosine formulas, the cosine (cos) function is discussed. Consider a right-angled triangle with one acute angle, x. The cosine formula is cosx = (adjacent side) / (hypotenuse), where "adjacent side" refers to the side adjacent to angle x and "hypotenuse" refers to the longest side of the triangle.

As per cosine rule fore given [tex]$\triangle$[/tex]ABC:

[tex]$\cos \theta=\frac{b^2+c^2-a^2}{2 b c}$$$[/tex]

According to the question;

For a given [tex]$\triangle$[/tex]ABC;

cos e < 0.

Therefore, [tex]\quad \frac{b^2+c^2-a^2}{2 b c} < 0 \\[/tex]

[tex]b^2+c^2 < a^2[/tex]

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Question 15 (1 point)
(01.04 MC)
Darnell is planning a trip to Dallas. He knows the hotel costs $155 per night and the round-trip flight is $99. He has a budget of $850 to spend
on his trip. Which of the following inequalities represents his budget to determine how many nights he can stay in Dallas?
OO
Ob
Od
99n+ 155 2 850
99n+155 ≤ 850
155n+99 2 850
155n+ 99 ≤ 850

Answers

The inequality that represents the number of nights he can stay in Dallas is 155n+ 99 ≤ 850 (option d).

How many nights can he stay in Dallas?

Here are inequality signs and what they mean:

> means greater than< means less than≥ means greater than or equal to ≤ less than or equal to

Since his budget is $850, he can spent a total of $850 or less than $850 on the trip. The sign that would be used to represent this is ≤.

(Total hotel stay cost) + cost of flight ≤. budget

(cost per night x number of hotel stays) + $99 ≤ $850

155n + $99 ≤ 850

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Answer:

Answer is D

Step-by-step explanation:

Which equation represents a line which is perpendicular to the line y = 2x - 5?

Answers

Step-by-step explanation:

y = 2x + C

we must want to find C


Find the sum of each finite arithmetic series. 1+4+7+ . . . . . .+31

Answers

The sum of finite arithmetic series 1+4+7+ . . . . . .+31 is S(11) = 176

The given  arithmetic series is:

      1+4+7+ . . . . . .+31

From the above series, we know that:

The first term, a(1) = 1

The last term, a(n) = 31

The common difference, d = 4 - 1 = 3

Recall the formula to find the nth term of an arithmetic sequence:

a(n) = a(1) + (n-1) . d

Substitute a(1) = 1, a(n) = 31, and d = 3:

31 = 1 + (n-1) . 3

31 = 3n - 2

3n = 33

n = 11

In an arithmetic series, the sum of the first n terms is given by:

S(n) = n/2 [ a(1) + a(n) ]

Substitute n = 11, a(1) = 1, and a(n) = 31:

S(n) = 11/2 (1 + 31)

S(11) = 11. 16 = 176

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HELP PLS which one is least

Answers

Answer:

Option B

Step-by-step explanation:

→ Find the option with the smallest power

Option B

solve 6/7x + 15 - 8 = 31

Answers

Answer:

Step-by-step explanation:

simplify

6/7x + 7= 31

6/7x+7-7=31-7

6/7x=24

6/7x=24/6/7

28

6/7(28)+15-8=31

24+15-8=31

39-8=31

What is the slope of the function?
pls answer

Answers

Answer:

slope = -4

Step-by-step explanation:

slope = [tex]\frac{y2-y1}{x2-x1}[/tex] = [tex]\frac{-10 - (-2)}{-2 - (-4)}[/tex] = [tex]\frac{-10 + 2}{-2 + 4}[/tex] = [tex]\frac{-8}{2}[/tex] = -4

The activation energy of a reaction is 133.5 kj, and frequency factor (a) is 8.23 x 1010 sec -1, at what temperature (in celsius) is the rate constant equal to 0.08857 sec-1?

Answers

  955°C is  temperature (in celsius) is the rate constant equal to 0.08857 sec-1.

What is the short definition of activation energy?

The least amount of energy necessary to bring atoms or molecules into a state where they can undergo chemical transformation or physical transport is known as the activation energy .

K = [tex]A . e^{\frac{-Eq}{RT} }[/tex]

logk = logA = Eq/RT

log0.02629 = log5.57 × [tex]10^{10}[/tex] sec-1  -  [tex]\frac{125.6 * 10^{3} }{8.314 * T}[/tex]

                   = log5.57  + [tex]log 10^{10}[/tex]  - [tex]\frac{12.56 * 10^{3 J} }{8.314 * T}[/tex]

                   = log5.57  + 10log10 - 15.10 * 10³ J/T

   -1.5483 = 0.7458 + 10 - 15.10 * 10³/ T

  -1.5483 = 10.7458 - 15.10 * 10²/T

 - 15.10 * 10³/ T   = -1.5483 - 10.7458

   15.10 * 10³ /T = 12.2941

 T = 15.10 * 10³/ 12.2941

       = 1228K

       = 955°C

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A home improvement store sells bags of sand, which are labeled as
weighing 35 pounds. The equipment used to package the sand produces bags
with a weight that is within 8 ounces of the labeled weight.
a. Write an absolute value equation to represent the maximum and minimum
weight for the bags of sand.
b. Solve the equation and interpret the result.

Answers

The maximum and the minimum weight for the bags of sand are 36 and 35 pounds respectively

Write an absolute value equation to represent the maximum and minimum weight for the bags of sand.

Here, we have

Weight = 35 pounds

Labeled weight = within 8 ounces

Convert ounce to pounds

So, we have:

Labeled weight = within 0.5 pound

The equation is then represented as

|x - 35| = 0.5

Where x represents the labeled weight

b. Solve the equation and interpret the result.

In (a), we have

|x - 35| = 0.5

Expand

x - 35 = 0.5 and x - 35 = -0.5

Add 35 to both sides

x = 36 and x = 35

Hence, the maximum and the minimum weight for the bags of sand are 36 and 35 pounds respectively

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show that the value of cos30 degrees x tan60 degrees + sin30 degrees is an integer

Answers

Answer:

Step-by-step explanation:

cos(30) x tan (60) + sin (30) = (√3)/2 x √3 + 1/2 = 3/2 + 1/2 = 4/2 = 2

what does (x+4)(2x+5) equal?

Answers

Step-by-step explanation:

[tex](x+4)(2x+5)\\\\2x^2+5x+8x+20\\\large\boxed{2x^2+13x+20}[/tex]

Note: enter your answer and show all the steps that you use to solve this problem in the space provided. how you would convert the repeating, nonterminating decimal to a fraction? explain the process as you solve the problem. 0 . 1515 . . .

Answers

The fraction for 0.1515... is 5/33

It is possible to convert non terminating decimals to fraction. Because decimals are originally obtained from fractions itself.

If we have a terminating decimal number, by multiplying and dividing with powers of 10 gives a fraction.

For example, for the decimal 0.25, multiply and divide it with 100 which gives, 25/100 = 1/4.

Now we need to find the fraction corresponding to the decimal 0.1515..

Let x = 0.1515...

First we take 100x = 15.1515...

Now we can subtract the decimal part completely from 15.1515... since it is non terminating.

Now, 100x - x = 15.1515..- 0.1515.. = 15

Therefore, 99x = 15

and x = 15/99 = 5/33

So 5/33 is the fraction for the decimal 0.1515...

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Identify the constant of variation. y=(3/2)x

Answers

The constant of variation in  y = (3/2)x is (3/2)

y = kx                           (Where k is the constant)

Here, y = (3/2)x

so k = (3/2)

How to solve an equation?

To solve linear equations, utilize the steps that are provided below.

Remove parentheses from each side of the equation and combine similar terms to make it simpler.To separate the variable term on one side of the equation, use addition or subtraction.To find the variable, use division or multiplication.The common denominator can be multiplied by each side of the equation to eliminate fractions.

Lets take an example of solve z for 7z – (3z – 4) = 12

Here is no multiplication or division, so this will be easy to solve

⇒ 7z – (3z – 4) = 12

⇒ 7z – 3z + 4 = 12

⇒ 4z = 12 – 4

⇒ 4z = 8

⇒ z = 8/4

⇒ z = 2

See, that was so simple, using the mentioned methods, every linear equation can be solved easily.

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What's 3/10 + 8/15? (Brainliest Question)

Answers

To solve find the LCD and then combine. The answer would be 5/6

Answer:

5/6

Step-by-step explanation:

Get LCD of 30 and add

9/30 + 16/30

25/30

Reduce

5/6

pls help me with my math homework

Answers

Answer:

55 sq ft

Step-by-step explanation:

okay so the are of the lil square is 9 sq ft and the area of the big square is 64 sq ft so j subtract the small from the big

Answer: 55cm ^2

Step-by-step explanation:

Area of a square is A=a^2

Area of small square is 3cm^2 = 9cm^2

Large square has an area of 8cm^2 = 64cm^2

64 - 9 = 55 cm^2

Therefore the remaining area is 55 centimeters squared

Dan is saving money to buy a game. So far he has saved $12, which is two-thirds of the total cost of the game. How much does the game cost?

Answers

Half of 12 is 6 which would be 1/3 of the total cost. 6 x 3 = 18. The game cost $18

need answers quickly pls!!!! :(

Answers

Answer:

17

Step-by-step explanation:

[tex]\left[\begin{array}{ccc}9-6\\\end{array}\right]+\left[\begin{array}{ccc}-5-(9)\\\end{array}\right][/tex]

=3+14

=17


Determine the slope of the line that contains the given points.
P(-3,-5), Q(-3,-1)

Answers

The slope of the line containing (-3,-5) and (-3,-1) is Infinity.

The slope of a straight line can be written as follows,

m =  [tex](y_{2} - y_{1} )/(x_{2} - x_{1} )[/tex]                 equation1

The line is containing the points (-3,3) and (4,3). So, we can write

[tex]y_{2}[/tex] = -1 , [tex]y_{1}[/tex] = -5 , [tex]x_{2}[/tex] = -3 , and [tex]x_{1}[/tex] = -3 .

On substituting the values of variables in equation1, we will get

m = ( (-1)-(-5) ) / ( (-3)-(3) ) = (4/0) = Infinity.

As the slope of a line is Infinity, so we can conclude that the given line is a straight line.

Here:

m = the slope of the line

( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] ) are the first coordinates.

( [tex]x_{2}[/tex] , [tex]y_{2}[/tex] )are the second coordinates.

The slope of the line containing (-3,-5) and (-3,-1) is Infinity.

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Jim buys a watch by making a $25 down payment and paying 15 installments of $12 each. What is the total cost of the watch?

Answers

Let’s take note of what we know already:

• He makes a down payment of $25
• He buys 15 additional installments of $12 each

Given that information, let’s set up an equation with y representing the total cost of the watch and x representing how many installments are bought:

y = 12(15) + 25

y = $180 + $25

y = $205

Answer Recap: The total cost of the watch is $205.

write an equation for the circle

Answers

-5 , 1 that’s the answer

Directions: If the statement is true, circle true. If the statement is false, circle false.
15. √115 is between the integers 10 and 11.
TRUE

FALSE

Answers

True it true 10 and 11

2+2 i know the answer is four

Answers

Answer:

5 50bw syfnauw dux fyq euw eywvr6b


Find the value of x for the given values of a and b .
b=3 x+4 a , for a=-9 and b=12

Answers

The value of X in the equation that allows a solution with the values of "a" and "b" is x = 16

What are the equations?

An equation is the equality that has mathematical expressions on both sides of it, they can be functions, polynomials or others, there are no limits for them.

  Equations can be graphed, just like a function.

   We write the given equation

b = 3x + 4a

 and we have the values of the coefficients a and b, and these are:

a = -9b = 12

  We substitute these values in the equation:

b = 3x + 4a

(12) = 3x + 4(-9)     :::: We solve the equation

12 = 3x -36

3x = 12 + 36

3x = 48

x = 48/3

x = 16

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