Elimination method 10x-4y=-8
-5x+6y=10

Answers

Answer 1
Eliminate the x terms: Multiply the second equation by 2
-10x+12y=20

Add it to the first equation
10x-4y=-8
-10x+12y=20
——————-
0x+8y=12

y = 1.5

10x-4(1.5)=-8
10x = -2
x = -1/5

Related Questions

3 is an element in the domain of the function g(x)= -2x - 4 . What is the corresponding element in the range?

Answers

Hello! :)

[tex]\large\boxed{g(3) = -10}[/tex]

If 3 is apart of the domain, then x = 3.

The range is equivalent to g(x), or the y-value. To solve for this when x = 3, we must plug 3 into the equation:

g(x) = -2x - 4

g(3) = -2(3) - 4

Simplify:

g(3) = -6 - 4

g(3) = -10

Define/explain the symmetric property.

Answers

Step-by-step explanation:

The Symmetric Property states that for all real numbers x and y , if x=y , then y=x . Transitive Property. The Transitive Property states that for all real numbers x ,y, and z, if x=y and y=z , then x=z .

Select the correct answer.
A figure in the second quadrant is reflected over the y-axis. In which quadrant will the reflected figure appear?

Answers

Answer:

It would land on the first quadrant.

Step-by-step explanation:

What is the derivative of sech u with respect to x?

Answers

Answer:

[tex]\displaystyle \frac{dy}{dx} = -u'sech(u)tanh(u)[/tex]

General Formulas and Concepts:

Calculus

Differentiation

DerivativesDerivative Notation

Derivative Rule [Chain Rule]:                                                                                 [tex]\displaystyle \frac{d}{dx}[f(g(x))] =f'(g(x)) \cdot g'(x)[/tex]

Step-by-step explanation:

*Note:

This is a known derivative (apply trigonometric differentiation).

Step 1: Define

Identify

[tex]\displaystyle y = sech(u)[/tex]

Step 2: Differentiate

Hyperbolic Differentiation [Derivative Rule - Chain Rule]:                         [tex]\displaystyle y' = -u'sech(u)tanh(u)[/tex]

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Differentiation

HELP ME I need help with a 7th grade math test anyone willing to help me

Answers

Answer: A: x= -3 B: x= 7/3 C: x= 11/2 D: 58 1/3

for the first 4 questions

For #5 the red ones slope is -2 and the y-Int is 1. For the blue one the slope
Is 1/2 and the y-int is 3. And for the green one the slope is -2/3 and the y-Int is -4

At the beginning of spring, Arun planted a small sunflower in his backyard. When it
was first planted, the sunflower was 15 inches tall. The sunflower then began to grow
at a rate of 1.5 inches per week. How tall would the sunflower be after 3 weeks? How
tall would the sunflower be after w weeks?
Height after 3 weeks:
Height after w weeks:
Submit Answer

Answers

Answer:

height After 3 weeks: 19.5

Step-by-step explanation:

I dont know answer to second


3
gina practica
3/4
de hora de aeróbicos y
hora de máquinas en el gimnasio; si ella va a
gimnasio solamente los domingos durante un mes, ¿cuántas horas dedica a ejercitarse?​

Answers

A pergunta não está bem formatada. No entanto, pelo que parece óbvio

Responda:

3 horas

Explicação passo a passo:

Fração de hora gasta por sessão = 3/4 horas por sessão

Se o exercício for feito apenas aos domingos

Número de domingos por mês = 4

Portanto, número de sessões = 4

Fração de horas por sessão * Número de sessões

3/4 * 4 = 3 horas

Portanto, 3 horas são dedicadas ao exercício por mês

WILL MARK BRAINLIEST!!

solve for all values of x.
pls show some work (not all is necessary, but appreciated)

if both problems are done, i’ll mark you the brainliest:)
and i hope you have an amazing day

Answers

15/10 = 18-x/x is the ratio of the larger to the smaller triangle

Cross multiply:
15x = 10(18 - x)
15x = 180 - 10x
25x = 180
x = 7.2

Plug back in to check
15/10 = 1.5

18-7.2/7.2 = 10.8/7.2 = 1.5 :)

answer for 11 points and brainliest

Answers

Answer:

Constant, $19/sweater

Step-by-step explanation:

You can check each of data by dividing cost/number.

38÷2=19

76÷4=19

133÷7=19

171÷9=19

Doing this will tell you the price of 1 sweater, which is $19.

Please help for brainliest.

Answers

Answer:

C

Step-by-step explanation:

(1, 2) indicates that x=1 and y=2

A:

(2)-(1)=1

3(2)-4(1)10

B:

-2(2)+5(1)-1

C:3(2)+2(1)=84(2)-(1)=7

D:

3(2)-(1)1

A line passes through the point (-8, 6) and has a slope of
5
Write an equation in slope-intercept form for this line.

Answers

Answer:

Step-by-step explanation:

y - 6 = 5(x + 8)

y - 6 = 5x + 40

y = 5x + 46

describe the graphs of x + 3y = 6 and 2x + 6y = 12

Answers

I hope this helps with your answer have a nice day

Explanation:

x + 3y = 9

2x + 6y = 12

First you check if the two equations are compatible, that is

if they are parallel, they must not intersect.

Parallel means they have the same slope, given by dy/dx in general, and in the case of linear equations by the ratio of the y coefficient to that of x, that is 3 for the first equation, and 3 for the second. Since these two equations are parallel, they are multiple of each other. Now where these straight lines intersect the axis y = 0, that is the x-axis, is the constant term on the right hand side. Try it

Put y = 0 you get x = 9, for the first equation, and y = 0, x = 6 for the second equation, This is geometrically impossible, and therefore algebraically too. So this problem has no solution

Explanation:

If I'm wrong or That I missed The Question and just missed read it then My Answer Might have been wrong correct me or sumn If Im wrong

(。づ’▽’。)づ♡ #CarryOnLearning

The selling prices on
distributed with a mean of $221,000 and a standard deviation of $30,000.

Answers

What? I didn’t find a answer sorry

11. A spinner is divided into 12 equal sections. Five of the sections are labeled with
Even numbers, three sections are labeled with vowels, and four of the sections are
labeled with odd numbers. What is the probability of spinning an odd number? Writeyour answer as a fraction fully reduced.

12. You are choosing an outfit. You can choose from blue jeans, black joans or joggers (3 cholcos).
You can choose from a white tee shirt, Orange too shirt, or gray sweatshirt (3 choices). Finally, you
can choose from your Vans or Crocs (2 choices)

a. A tree diagram would have how many branches? (so how many total choices would there be if
you mutipan 18 choices

b. The counting principal would look like what?
Write your answer like a xbxcxd with you putting in numbers for the letters

c. How many different ways can she choose to write the outfit ?

d. What is the probability that you will choose the joggers, orange tee shirt and Croos? Write your answer as a fraction: a/b with a and being numbers?

Answers

Answer:

Probability of spinning an odd number = 1/3

Step-by-step explanation:

4 odd out of 12 sections

Probability of spinning an odd number = 4/12 = 1/3

Smith and his friends are gaming online on a popular website. An hour later, 6 friends go offline. Five of them continue playing. How many of them were gaming online initially?

Answers

Answer:

11

Step-by-step explanation:

5+6=11

Which graph represents the solution set of the inequality Negative 14.5 less-than x?
A number line going from negative 15 to negative 11. An open circle is at negative 13.5. Everything to the right of the circle is shaded.
A number line going from negative 15 to negative 11. A closed circle is at negative 14. Everything to the right of the circle is shaded.
A number line going from negative 15 to negative 11. An open circle is at negative 14.5. Everything to the right of the circle is shaded.
A number line going from negative 15 to negative 11. A closed circle is at negative 15. Everything to the right of the circle is shaded.

Answers

Answer:

Step-by-step explanation:

The third graph.

Answer:

the 3rd one

Step-by-step explanation:

Apples are on sale at the local fruit stand at 4 lbs. for $2.60. Which equation can be used to find the cost, c, of n pounds of apples?

Answers

Answer:

C=.65n

Step-by-step explanation:

It costs 2.60 for 4 lbs of apples. For it to be 1 pound of apples it would cost 0.65 cents

So in all the cost is 0.65 cents for (n) or 1 pound of apples.

Answer:

c is or the apples n is for the pound of that apples

Step-by-step explanation:


I NEED HELP!!!... WHATS THE ANWSER FOR THIS??

Answers

each y value is determined by adding 4 to the x value
the first one on the top.

explanation: the X and Y values go up by 2 each time. 2+2 = 4. 4+2= 8 and ect.

Could I get some help?


Adult tickets to a basketball game cost $5. Student tickets cost $1. A total of $2,542 was collected on the
sale of 1,158 tickets. How many of each type of ticket were sold?
The basketball game sold
adult tickets and
student tickets.

Answers

Answer:

#adult tickets sold = 346

#student tickets sold = 812

Step-by-step explanation:

let 'x' = # adult tickets sold

let 'y' = # students tickets sold

System of Equations:

x + y = 1158

5x + y = 2542

I used the elimination method and multiplied the first equation by -1

  -x - y = -1158

+ 5x + y = 2542

  4x  =  1384

   x = 346

346 + y = 1158

y = 812

Lydia invested $8,300 in an account paying an interest rate of 2.2% compounded
daily. Assuming no deposits or withdrawals are made, how long would it take, to the
nearest tenth of a year, for the value of the account to reach $12,690?

Answers

Number of years taken to reach the amount of $12,690 is 5 days,

What is Compound interest?

Compound interest is the interest which is calculated on both the initial principal and the accumulated interest from previous periods. It can be easily understood as interest on interest.

                              [tex]A= P(1+\frac{r}{n})} ^{nt}[/tex]

Principal amount invested by Lydia = $8,300

Rate of compound interest per day =2.2%

To find the number of years that have taken to reach the amount value of $12,690 .

By using compound interest formula,

[tex]A= P(1+\frac{r}{n})} ^{nt}[/tex]

[tex]12690 = 8300(1+ \frac{2.2}{365})^(365*t)[/tex]

[tex]\frac{12690}{8300}=(1.000060274)^{365*t}[/tex]

Taking log on both sides, we get,

log(1.5289156627) =365*t log(1.000060274)

log(1.5289156627)/log(1.000060274)= 365*t/log(1.000060274)⇒

0.184383 - 0.00002618= 365*t

⇒1843.5 =365*t

⇒t=5 days.

Hence, number of years taken to reach the amount of $12,690 is 5 days,

Learn more about compound interest here:

https://brainly.com/question/3989769

#SPJ1

GIVING BRAINIEST GIVING BRAINIEST GIVING BRAINIEST GIVING BRAINIEST GIVING BRAINIEST GIVING BRAINIEST GIVING BRAINIEST AND POINTS!!!!!!!!!!!!!!!! photo attached above thanks sm if u help

Answers

Answer:

i think its the third option

I’m 90 percent sure C

plz help my friend plz and thank you

Answers

The answer is prob c

Answer:

8.7 ≈ 9

Step-by-step explanation:

2πr = 55, so r = 55/(2*3.14) ≈ 8.7579...

pleaseee anwser quick!!! 10 points!

Answers

Answer:

I think quadratic

Step-by-step explanation:

Quadratic I hope it’s right

AHHH HELP
An aquarium holds 11.94 cubic feet of water, and 2.6 feet long and 1.4 feet wide. What is its depth? Round your answer to the nearest whole number.

Answers

6 feet deep

height/length*width

11.94/2.6*1.4

PLA HELP NEEDED ASAP I WILL GIVE BRAINLESS TO CORRECT ANSWER PLS HELP

Answers

Answer:

181.46

Step-by-step explanation:

How many solutions does the equation 9 (x - 3) = 9x - 27 have?

Answers

Answer:

Infinity

Step-by-step explanation:

9x -27 = 9x -27

-9x .     -9x

-27 = -27 = always true

How do write an equation in slope intercept form

Answers

Answer:

y-y1=m(x-x1)

Step-by-step explanation:

y stays as y and x stays as x, but y1, and x1, are your coordinates you use.

Which represents the inverse of the function f(x) = 4x?
O h(x) = X + 4
• h(x) =X- 4
O h(x) = =x
O h(x) = ÷x


PLEASEE HELP

Answers

Answer:

f^(-1) = x/4

Step-by-step explanation:

1.  Starting with f(x) = 4x, replace 'f(x)' with y:  y = 4x

2.  Interchange x and y:  x = 4y

3.  Solve for y:  y = x/4

4.  Replace this y with 'f^(-1) = ":    f^(-1) = x/4

Write three equivalent fractions for 4/5

Answers

Answer:

8/10, 16/20, 12/15

Step-by-step explanation:

Just multiply both the 4 and the 5 by the same number (any number), and you have an equivalent fraction.

Answer:

4/5

8/10

12/15

it's your answer

A farm is to be built in the shape of Quadrilateral ABCD, as shown below. All four sides are equal.

A rhombus ABCD is shown with diagonal AC equal to 12.6 feet and diagonal BD equal to 10.4 feet.

What is the area of the farm? (1 point)

Answers

9514 1404 393

Answer:

  65.52 square feet

Step-by-step explanation:

The area of a rhombus is half the product of the diagonals.

  A = (1/2)ab

  A = (1/2)(12.6 ft)(10.4 ft) = 65.52 ft²

The area of the farm is 65.52 square feet.

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