negative 5x plus 4y equals 3 i need x and y please

Negative 5x Plus 4y Equals 3 I Need X And Y Please

Answers

Answer 1

Answer:

x = 9

y = 12

Step-by-step explanation:

-5x + 4y = 3

x = 2y - 15

Manipulate the equations such that the coefficients of two variables are additive inverses

-5x + 4y = 3

x = 2y - 15

Inverse operations

-> 4y - 3 = 5x

-> 2y - 15 = x (*(-5))

->4y - 3 = 5x

-> -10y + 75 = -5x

Now add the equations to eliminate a variable,

4y - 3 = 5x

-10y + 75 = -5x

-6y + 72 = 0

Inverse operations

-6y + 72 = 0

72 = 6y

/6       /6

12 = y

Back solve to find (x)

2y - 15 = x

2(12) - 15 = x

24 - 15 = x

9 = x


Related Questions

plz help i have 9 min and i dont understand plz help worth 20 points

Answers

Answer:

no question

Step-by-step explanation:

PLEASE HELP!!!
what is the length of segment SR? units​

Answers

Answer:

Its 12

Step-by-step explanation:

Plot the x-intercepts and make a sign chart that represents the function shown below

Answers

Step-by-step explanation:

step 1. the x intercepts (called zeros) are where y = 0 or where the graph is on the x axis

step 2. the zeros are -3, 0, 2, 5.

step 3. therefore there are 5 intervals

step 4. ( ,-3) - f(x) = "-"

step 5. (-3, 0) - f(x) = "+"

step 6. (0, 2) - f(x) = "+"

step 7. (2, 5) - f(x) = "-"

step 8. (5, ) - f(x) = "+".

A function assigns the values. The x-intercept for the given function is -3, 0, 2, and 5.

What is a Function?

A function assigns the value of each element of one set to the other specific element of another set.

The given function can be rewritten as,

f(x) = x²(x-5)(x+3)³(x-2)

f(x) = (x-0)² (x-5) (x+3)³ (x-2)

Now, the value of x in the given function, or the x-intercept can be found by substituting the value of the factors of function as 0.

0 = (x-0)² (x-5) (x+3)³ (x-2)

(x-0)² = 0

x = 0

x-5 = 0

x = 5

x+3 = 0

x = -3

x - 2 = 0

x = 2

x = -3, 0, 2, 5

Hence, the x-intercept for the given function is -3, 0, 2, and 5.

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final solution to the system of equations given below
x=-4
5x+4y=-10​

Answers

Answer:

(-4, 5/2)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right  

Equality Properties

Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of Equality

Algebra I

Coordinates (x, y)Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

x = -4

5x + 4y = -10

Step 2: Solve for y

Substitution

Substitute in x:                                                                                                5(-4) + 4y = -10Multiply:                                                                                                           -20 + 4y = -10[Addition Property of Equality] Add 20 on both sides:                               4y = 10[Division Property of Equality] Divide 4 on both sides:                                 y = 10/4Simplify:                                                                                                             y = 5/2

make a problem about simple interest​

Answers

Answer:

Simple Interest (SI) = Amount (A) – Principal (P) = 6000 - 5400. = 600

Answer:

1. Robert deposits $ 3000 in State Bank of India for 3 year which earn him an interest of 8%.What is the amount he gets after 1 year, 2 years and 3 years?

Step-by-step explanation:

Solution:

In every $ 100, Robert gets $ 8.

(Since rate is 8% → 8 for every 100)

Therefore, for $ 1 he gets = $ 8/100

And for $ 2000 he gets = 3000 x 8/100 

= $ 240

Simple Interest for 1 year = $ 240.

Simple Interest for 2 year = $ 240 x 2 

= $ 480

Simple Interest for 3 year = $ 240 x 3

= $ 720

Therefore, Amount after 1 year = Principal (P) + Simple Interest (SI)

= 3000 + 240

= $ 3240

Amount after 2 years = Principal (P) + Simple Interest (SI)

= 3000 + 480

= $ 3480

Amount after 3 years = Principal (P) + Simple Interest (SI)

= 3000 + 720 = $ 3720

We observe from the above example that, the Interest cannot be calculated without Principal, Rate and Time.

Therefore, we can conclude that Simple Interest (S.I.) depends upon:

(i) Principal (P)

(ii) Rate (R)

(iii) Time (T)

And therefore, the formula for calculating the simple interest is

Simple Interest (SI) = {Principal (P) × Rate (R) × Time (T)}/100

Amount (A) = Principal (P) + Interest (I)

Principal (P) = Amount (A) – Interest (I)

Interest (I) = Amount (A) – Principal

A. a scientist is studying the change in population for two species of fish in a lake. The table shows how the numbers of each species changed during a 4-year period.
YEAR: 1; 2; 3; 4
FISH A: 500; 520; 540; 560; 580
FISH B: 400; 430; 460; 490; 520
The scientist uses a linear model to predict future populations of both fish. Explain why, given the data in the table, population of fish A and the population of fish B can be modeled using linear equations.

Answers

Answer:

The data can be modeled using linear equatins, because there's the same amount of population for fish A (+20 per year) and fish B (+30 per year) every year.


What is the GCF of 4 and 8? *

Answers

Answer:

i think it is for 4 it is 2 and for 8 it is 4 hope this helps

Step-by-step explanation:

y = x^5 sin (2x) cos (4x)
find the derivative​

Answers

y = x⁵ sin(2x ) cos(4x)

y' = d/dx (x⁵ sin (2x) × cos (4x) + x⁵ sin(2x) ). ×
d/dx (cos(4x) )

y' = 5x⁴ sin(2x) cos(4x)+2x⁵ cos(2x) cos(4x) -4x⁵ sin(2x) sin(4x)

The derivative​ of the equation will be y' = 5y/x + 2y cot (2x) - 4y tan (4x).

What is differential equation?

An equation containing derivatives of a variable with respect to some other variable quantity is called differential equations.

The derivatives might be of any order, some terms might contain product of derivatives and the variable itself, or with derivatives themselves.

They can also be for multiple variables.

y = x⁵ sin(2x ) cos(4x)

The differentiation;

y' = d/dx (x⁵ sin (2x) × cos (4x) + x⁵ sin(2x) ). × d/dx (cos(4x) )

y' = 5x⁴ sin(2x) cos(4x)+2x⁵ cos(2x) cos(4x) -4x⁵ sin(2x) sin(4x)

From the given equation;

y' = 5y/x + 2x⁵ cos(2x) cos(4x) - 4x⁵ sin(2x) sin(4x)

y' = 5y/x + 2y cot (2x) - 4y tan (4x)

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A lumber mill needs one more tree cut down that is at least 29 feet long. The person cutting down the tree is 6 feet 2 inches tall. Using shadows to determine whether a tree is tall enough, the person stands next to the tree and measures the length of his shadow as 32 inches. What is the length (to the nearest tenth of a foot) of the tree’s shadow that will allow the tree to be cut down?

Answers

Answer:

create a proportion 72/348 = 32/x

Step-by-step explanation:

x = 1682

1682 ÷ 12 = 140.1

The length of the tree’s shadow that will allow the tree to be cut down will be 150.5 inches.

What are ratio and proportion?

A ratio is an ordered set of integers a and b expressed as a/b, with b never equaling 0. A proportional is a mathematical expression in which two things are equal.

A lumber mill needs one more tree cut down that is at least 29 feet long. The person cutting down the tree is 6 feet 2 inches tall.

            29 feet = 348 inches

6 feet 2 inches = 74 inches

Using shadows to determine whether a tree is tall enough, the person stands next to the tree and measures the length of his shadow as 32 inches.

Then the length of the tree’s shadow that will allow the tree to be cut down will be

Let x be the tree’s shadow. Then we have

x / 348 = 32 / 74

x = 150.486

x ≅ 150.5 inches

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8 grade solution plobem, first explantion gets brainest

Answers

Answer:

x=8

y=1/6x+4/6

y= 2

Step-by-step explanation:

Ok so .. the first answer is
-2x + 18 =2
Move the constant to the right
-2x =2 - 18
Calculate the difference
-2x = -16
Divide both sides of the equation by -2
And that’s how I got x=8


The other one is x - 6y = -4
X= 6y - 4
Move the variable to the left hand side by adding it’s opposite to both sides
X - 6y = 6y - 4 - 6y
Since two opposites add up to zero,remove them from the expression
And that’s how x - 6y = -4

Which polynomial represents the sum below? (-x^3 + 3x^2 + 3) + (3x^2 + x + 4)

Answers

Answer:

Cddd

Step-by-step explanation:

I'm needing help with 4,5,6​

Answers

3. Acute
4. Right
5. Acute

Hope this helps!

Answer:

4. acute

5. obtuse

6. obtuse

Step-by-step explanation:

Find the x-intercept and y-intercept of the following
equation
2x + 5y = -6

Answers

Answer:

x = -3

y = -6/5

Step-by-step explanation:

To find the x-intercept(s), substitute in 0 for y and solve for x.

2x + 5(0) = -6

x = -3

Find the y-intercepts.

To find the y-intercept(s), substitute in 0 for x and solve for y.

2(0) + 5y = -6

y = -6/5

good luck, i hope this helps :)

Is (2, 1) a solution to this system of equations?
4x + 12y = 20
x + y = 3
yes
no

Answers

Answer:

yes

I hope to help you

my dear

Answer:

no

Step-by-step explanation:

4(2)+12(1)=20

8 + 12 =20

20 = 20

Please help me please ! Also the answer is not a

Answers

Answer:

The answer is c

Step-by-step explanation: Since both terms are perfect squares, factor using the difference of squares formula to get the answer i hope this helps

Hey there!

The answer is C.

To factor an expression, you take the root (same as exponent variable has) of the terms and put them into parantheses. We can also check the choices to see if they're correct by solving them.

A is incorrect, because if you solve it, you would have [tex]x^2-121[/tex]

B is incorrect, because if you solve it, you would have [tex]121x-x^2[/tex]

C is correct, because if you solve it, you would have [tex]121-x^2[/tex]

D is incorrect, because it CAN be factored.

Have a super awesome day! :)

If the probability of an event happening is 82/97, what are the odds against it happening?

Answers

Answer:

15/97?

Step-by-step explanation:

Just Minus the 82 and 97 to be the probability against it happening.

Sorry if I'm wrong

Zahir is going to the movies. The cost of a movie ticket is $10.50 and candy costs $3 for each box. He has a maximum of $20 to spend. How many boxes of candy can he buy?

b = # of boxes of candy he can buy

Answers

Answer:

3 boxes of candy

Step-by-step explanation:

$20.00 = $10.50 + 3(b)

3*3 = $9.00

$10.50 + $9.00 = $19.50

$20.00 - $19.50 = $0.50

($0.50 is the reminder).

Have a great day, all!!

Evaluate the expression: 16.2 x 2 + 1/2 x 8.5 x 12

Answers

83.4. Is the answer.

Answer:

83.4

Step-by-step explanation:

16.2 x 2

=

32.4 +

1/2 x 8.5 x 12  

=

51 + 32.4 = 83.4

Hope this helps!

fen bilimleri sorusu limana yaklaşan bir geminin önce gövdesimi görünüyorduuuuu yoksa bacasımı ¿¿¿¿ ^-^​

Answers

Answer:

ilk önce en ön kısmı gözükür

bacası öndeyse bacası gözükür

şöyle düşün elinde bir top var ve bir gemi gemiyi topun altindan yukariya doğru götürüyorsun ve ilk en öndeki kısmı gözükür

Find angle picture below

Answers

Answer:

Angle C = 28°

Angle D = 59°

Angle DEC = 63°

I need help with this also

Answers

Answer:

Part A: $336.4

Part B:279.2645625

Step-by-step explanation:

$320+5.125% tax = 336.4

Part B:$279.2645625-5.125% tax = 279.2645625 bucks.

Thank you and good luck cheating

Solve for the indicated variable in the literal equation. REAL ANSWERS ONLY!​

Answers

Answer:

[tex] \large \boxed{l = \frac{P + 9}{ - 4} }[/tex]

See below for two alternative solutions.

Step-by-step explanation:

Goal

Solve for the l-term.

Given Equation

[tex]P = - 3 - 4l - 6[/tex]

Step 1

Make the l-term as the subject of equation by moving - 3 and - 6 to another side so we can leave l-term as the subject.

[tex]P + 3 + 6 = - 4l[/tex]

Simplify by adding 3 and 6.

[tex]P + 9 = - 4l[/tex]

Remember that we cannot combine a variable and a constant. We can only combine a like term.

Step 2

Move -4 to divide P+9 so we can finally solve for l-term.

[tex] \frac{P + 9}{ - 4} = l[/tex]

Alternative Solutions

1) We change the position of the negative sign of 4.

[tex] - \frac{P - 9}{4} = l[/tex]

2) Simplify in the simplest form.

[tex] \frac{P + 9}{ - 4} = l \\ \frac{P}{ - 4} + \frac{9}{ - 4} = l \\ - \frac{P}{4} - \frac{9}{4} = l[/tex]

Prior to the Academy Awards ceremony in 2009, the United Kingdom bookmaker Ladbrokes reported the following odds for winning an Oscar in the category of best actress (The Wall Street Journal, February 20, 2009).
Best Actress Movie Odds
Anne Hathaway Rachel Getting Married 2:11
Angelina Jolie Changeling 1:20
Melissa Leo Frozen River 1:33
Meryl Streep Doubt 3:10
Kate Winslet The Reader 5:2
a. Express the odds for each actress winning as a probability. (Round your answers to 3 decimal places.)
Best Actress Probability
Anne Hathaway
Angelina Jolie
Melissa Leo
Meryl Streep
Kate Winslet

Answers

Answer:

Anne Hathaway: 0.154 = 15.4%

Angelina Jolie: 0.048 = 4.8%

Melissa Leo: 0.029 = 2.9%

Meryl Streep: 0.231 = 23.1%

Kate Winslet: 0.714 = 71.4%

Step-by-step explanation:

Odds to probability:

Odds of a:b

The probability is given by:

[tex]p = \frac{a}{a+b}[/tex]

Anne Hathaway 2:11

So [tex]p = \frac{2}{2+11} = \frac{2}{13} = 0.154[/tex]

Angelina Jolie 1:20

So [tex]p = \frac{1}{1+20} = \frac{1}{21} = 0.048[/tex]

Melissa Leo 1:33

So [tex]p = \frac{1}{1+33} = \frac{1}{34} = 0.029[/tex]

Meryl Streep 3:10

So [tex]p = \frac{3}{3+10} = \frac{3}{13} = 0.231[/tex]

Kate Winslet 5:2

So [tex]p = \frac{5}{5+2} = \frac{5}{7} = 0.714[/tex]

1. In order to save for her high school graduation, Kathrina decided to save ₱200 at the end of every other month, starting the end of the second month. If the bank pays 0.250% compounded monthly, how much will be her money at the end of 5 years? (use j = 0.000417, n = 30)

2. Emma availed of a cash loan that gave her an option to pay ₱10,000 monthly for 1 year. The first payment is due after 6 months. How much is the present value of the loan if the interest rate is 12% converted monthly?

Answers

Answer:

1) 202.52

2) P107089

Step-by-step explanation:

Compound interest is calculated as

A = P (1 + r/n)^(nt), where

A = compounded interest

P = present value

r = interest

n = number of times interest applied

t = time taken

A = 200 (1 + 0.25%/30)^(30 * 5)

A = 200 (1 + 8.3*10^-5)^150

A = 200 * 1.0126

A = 202.52

Present Value Annuity Due is usually given by the formula

P = c*((1-(1+ i)^(-n))/i)*(1 + i ), where

P is the present value

C is the Cash flow per period

i is the interest rate and

n is the number of payments

P = 10000*((1-(1+ 12/1200)^(-1*12))/(12/1200))*(1+12/1200)

P = 113676

Also, it's worthy of note that

Effective Annual Rate = [(1 +stated rate/no. of compounding periods) ^no of compounding periods - 1]* 100

EAR = ((1+12/(12*100))^12-1)*100

EAR = 12.68%

And lastly, the

Future value = present value*(1+ rate)^time

113676 = Present value*(1+0.1268)^0.5

Present Value = 113676 / 1.1268^0.5

Present Value = 113676 / 1.0615

Present value = 107089

solve t(3+4) if t= 7​

Answers

49.
7(3+4)
3 + 4= 7
7 x 7 = 49

Answer:

=49

Step-by-step explanation:

7(3+4) substitute 7 into t

7(7) add numbers in brackets bec of BODMAS

49

Extra p!
Someone help me, Thanks!!

Answers

Answer:

Step-by-step explanation:

so confused right now

Answer:

Step-by-step explanation: the answer is breme

What is 593832+872382828=
Plz answer /

Answers

Answer:

8,729,766,60

Step-by-step explanation:

593832+872382828= I'm 100% sure my answer is correct I worked it out on paper and calculated it after

Answer:

Step-by-step explanation:

872976660

please help im so lost

Answers

Answer:
C converse of alternate interior angles

What is the slope of a line that is perpendicular to the line y = 1/6x + 4
The slope of the line is

Answers

Answer:

-1/6x

Step-by-step explanation:

for a slope to be perpindicular it has to be the opposite.

Hello there! :)

Perpendicular lines have slopes that are opposite reciprocals. It means that if we have a number, we flop it over and make it negative.

We have 1/6.

We flop it over:

6/1

Now, we make it negative:

-6/1

-6/1 simplifies to

-6

Hope it helps!

If you have any question, feel free to ask!

~An excited gal

[tex]MagicalNature[/tex] here to help :)

Russia bought 9 books for $3 each sold them making a profit of $18 for what price did she sell each book?​

Answers

Answer:

$45

Step-by-step explanation:

Profit= $18

Books = 9

Sold each at = $3

So, total CP (Cost Price)= 9*3 = $ 27

Also Profit = SP - CP

Therefore, SP = Profit + CP

= 18 + 27 = $45

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