Please help!!!! ive been trying to get help for almost 2 days and I have yet to get an actual answer :(. Please try to show some work if you can, thank youu​

Please Help!!!! Ive Been Trying To Get Help For Almost 2 Days And I Have Yet To Get An Actual Answer

Answers

Answer 1

49. [tex]x = \dfrac{1}{a}[/tex] and [tex]y = 3[/tex]

50. [tex]x = \dfrac{1}{2a}[/tex] and [tex]y = \dfrac{1}{b}[/tex]

Step-by-step explanation:

We are going to solve these systems of equations using the elimination method.

49. Given:

[tex]5ax + 4y = 17[/tex] (1)

[tex]\:\:ax + 7y = 22[/tex] (2)

Multiply Eqn(1) by 7 and multiply Eqn(2) by -4 to get

[tex]\:\:35ax + 28y = 119[/tex]

[tex]-4ax - 28y = -88[/tex]

Adding the two equations above, we get

[tex]31ax = 31 \Rightarrow x = \dfrac{1}{a}[/tex]

Substituting this value for a into Eqn(2), we get

[tex]y = 3[/tex]

50. Given:

[tex]4ax + \:\:by = 3[/tex] (3)

[tex]6ax + 5by = 8[/tex] (4)

Multiplying Eqn(3) by -5, we get

[tex]-20ax - 5by = -15[/tex]

[tex]\:\:\:\:\:\:6ax + 5by = \:\:8[/tex]

Adding the two equations above, we get

[tex]-14ax = -7 \Rightarrow x = \dfrac{1}{2a}[/tex]

Plugging in the value of x into Eqn(3), we get the value for y as

[tex]4a(\frac{1}{2a}) + by = 3[/tex]

or

[tex]2 + by = 3 \Rightarrow y = \dfrac{1}{b}[/tex]


Related Questions

Write the equation of the line that passes through (-2, 4) and is perpendicular to x = 3.

Answers

Check the picture below.

A line contains the points (1, 2) and (0,1). What is the equation of the line?

Answers

Answer:

y = x + 1

Step-by-step explanation:

Slope: (1-2)/(0-1) = -1/-1 = 1

y-intercept: 1 - (-2)(0) = 1

y = x + 1

The product of two consecutive even integers is 6 more than 3 times their sum. The integers are: a. 6,8 b. 16, 20 12, 16 d. 20, 24 C.​

Answers

Answer:

   a. 6,8

Step-by-step explanation:

The only offered answer choice that lists consecutive even integers is ...

   a. 6,8

_____

Consecutive even integers differ by 2, not 4.

__

Check

The product is 6×8 = 48.

Three times the sum is 3(6+8) = 3(14) = 42.

The product is 6 more than 3 times the sum. 42+6 = 48

A car travelling at a constant speed covers 585 km in 9 hours. In how much time will it cover in 520 km? I want the answer in direct or inverse proportion.

Answers

Answer:

It took eight hours to travel 520km

Step-by-step explanation:

PLEASE HELP WITH THIS ONE QUESTION

Answers

Answer:

Step-by-step explanation:

x = 2

Which of the expressions are equivalent to the one below? Check all that apply. (8 + 3) + 4 O = A. (8 + 4) = 3 B. 8. (3 + 4) OC. (3 + 8) = 4 O 8) D. (3 + 4) : (8 + 4) SUBMIT​

Answers

Answer:

C

Step-by-step explanation:

known by checking all the answers for chooses

41/2≤1.2x what is the answer

Answers

Answer:

i can help just meassage me

Step-by-step explanation:

ok thak u

What ordered pair describes the location of point A?
Enter your answer by filling in the boxes.



HELP ASAP

Answers

(8,6) the graph shows that the x is 8 and the y is 6

please help struggling a lot!

Answers

Answer:

- 162, 486, - 1458

Step-by-step explanation:

To find the next term in a geometric sequence , multiply the previous term by the common ratio r

r = [tex]\frac{T_{2} }{T_{1} }[/tex] = [tex]\frac{-18}{6}[/tex] = - 3 , then

T₄ = T₃ × - 3 = 54 × - 3 = - 162

T₅ = T₄ × - 3 = 486

T₆ = T₅ × - 3 = - 1458

Work out the missing numbers
-6x_= -30
-6x_= 0
-6x _=18
_x-6= -54

Answers

Answer:

1. 5

2. 0

3. -3

4. -38

Step-by-step explanation:

from 1 to 4 i answered and solved hope its helpful

A pollutant breaks down at a rate of 2% a year. What fraction of the current amount will be present in 20 years? Let X(0) = 1.

Answers

Answer:

Step-by-step explanation:

X = 1(1 - 0.02)ⁿ

X = 1(0.98)²⁰

X = 0.6676

67%

Using an exponential equation, it is found that 66.76% of the current amount will be present in 20 years.

A decaying exponential function has the following format:

[tex]A(t) = A(0)(1 - r)^t[/tex]

In which:

A(t) is the initial value.r is the decay rate, as a decimal.

In this problem, breaks down at a rate of 2% a year, hence [tex]r = 0.02[/tex], and:

[tex]A(t) = A(0)(1 - 0.02)^t[/tex]

[tex]A(t) = A(0)(0.98)^t[/tex]

The fraction after 20 years is A(20), hence:

[tex]A(20) = A(0)(0.98)^{20}[/tex]

[tex]A(20) = 0.6676[/tex]

66.76% of the current amount will be present in 20 years.

A similar problem is given at https://brainly.com/question/14773454

Write the equation of a line that has a
slope of 7, and passes through the
point (-2,5). Show your work.

Answers

Answer: Y=7x+19

Step-by-step explanation:

got no time for explain hope this helper

9514 1404 393

Answer:

  y -5 = 7(x +2)

Step-by-step explanation:

Values for the slope and a point are given. That makes it convenient to use the point-slope form of the equation for a line:

  y -k = m(x -h) . . . . . . line with slope m through point (h, k)

  y -5 = 7(x +2) . . . . . . line with slope 7 through point (-2, 5)

__

Sometimes, you want the slope-intercept form of the equation. That can be found by solving for y

  y -5 = 7x +14 . . . . . . . . eliminate parentheses

  y = 7x +19 . . . . . . . . . . add 5 to both sides

__

In standard form, the same line has equation ...

  7x -y = -19

whats the answer can someone answer please​

Answers

Answer:

both are c

Step-by-step explanation:

5.
Identify the axis of symmetry of the parabola.



A. y = −1

B. x = −1

C. x = 1

D. y = 1

Answers

Answer is C x=1 because that’s the middle of it.

Answer:

B. x = −1

Step-by-step explanation:

In the graph, the vertex of the parabola hits point (-1,-2). Therefore, the axis of symmetry is x = -1. It is not y = -2, since the parabola opens vertically, not horizontally.

Evaluate the expression using the values given.

4y(y + x); use x= 3/2, and y = -5/4

Answers

Answer:

-5/4 or -1 1/4

Step-by-step explanation:

Okay! We'll take this problem one part at a time so that the process is less confusing and less difficult. Here's what our expression looks like when we replace x with 3/2 and y with -5/4:

[tex]4(-\frac{5}{4} )(\frac{3}{2} +-\frac{5}{4} )[/tex]

Looks a little scary! We can start by working within the parentheses and adding the two fractions together. First, we have to make each fraction have the same denominator, so we can multiply each fraction by 3/2 to get both our fractions a denominator of 4.

[tex]\frac{3}{2} *\frac{2}{2} =\frac{6}{4}[/tex]

[tex]\frac{6}{4} + -\frac{5}{4} =\frac{1}{4}[/tex]

Now, our expression is a little easier to work with. It looks like this now:

[tex]4(-\frac{5}{4} )(\frac{1}{4})[/tex]

First, let's multiply 4 by -5/4. Then, we'll take that product and multiply it by 1/4 to get our final answer.

[tex]\frac{4}{1} * -\frac{5}{4} =-\frac{20}{4} =-5[/tex]

Alright, this is our simplest expression yet. What's -5 times 1/4?

[tex]-\frac{5}{1} * \frac{1}{4} =-\frac{5}{4}=-1\frac{1}{4}[/tex]

So our answer is -5/4, or -1 1/4. Hopefully that's helpful! :)

Evaluate (32 – 1)when z = 6

Answers

Answer:

17

Step-by-step explanation:

(3z - 1) when z = 6

Let's plug in 6 into the equation (3(6)-1)

Now we multiply the parenthesis (18-1)

Now we subtract (17)

So the answer is 17!

Anita is filling a small pool for her kids. Currently, there are 60 gallons of water in the pool and she is filling
the pool at a rate of 50 gallons every 5 minutes. The pool holds 200 gallons of water.
Which equation represents the amount of minutes (m) that it will take to fill the pool?
A. -10m + 200 = 60
B. -50m + 200 = 60
C.-10m + 140 = 60
D. -50m + 140 = 60

Answers

Answer:

M/140 = 50/60 or C

Step-by-step explanation:

Since the total is 200 it will be the denominator but we already have 60 gallons so we do 200-60=140

the ratio is 50 per 60

the last answer, D.

)) Type the missing numbers in this sequence: -3, -8, -13, -18, ​

Answers

Answer:

23

Step-by-step explanation:

first off if your to take away 3 from 8 you'd get five and the same goes for the rest

I.e

8-3=5

13-8=5

18+5=23

as 23 -18 would give you you 5

What is the lcm of 24, 18, and 6

Answers

we have 24= 2^3 x 3 ; 18=2 x 3^2 ; 6=2 x 3

so LCM of 24, 18, 6 is 2^3 x 3^2 = 72

ok done. Thank to me :>

If (-3)-5=1/xwhat is the value of x?

Answers

Option A

Option A -243

if any doubt leave a comment and don't forget to give BRAINLIEST

3. A certain container of mouthwash usually costs $2.99 at a store. If it is on sale for 20% off how much does the mouthwash cost now?
A. $2.75
B. $2.77
C. $2.40
D. $3.74

Answers

Answer:

the answer is D Because

Step-by-step explanation:

so I will say about $3.74

What did you notice about the sums of 7 + (–3) and –3 + 7?

Answers

Step-by-step explanation:

Sum of 7 + (-3) = 7 +.- 3 = 7 - 3 = 4

( As + × - = -)

Sum of -3+7 = 4

We observe that both are same .

Answer:

they both give the same answer

Step-by-step explanation:

7+(_3)=+4

_3+7=+4

Write an equation for the hangers below and solve (will give brainless if correct!)​

Answers

Answer:

1) 5x+2=17

2) 5(2+x)=17

Step-by-step explanation:

1) subtract 2 from both of the sides, then you get 5x=15. Divide 5 on both sides, then you get X=3

2) Use distributive property and multiply 5 and 2 and you get 10, then do the same thing with the x. You should get 10+5x=17. Subtract 10 from both sides. Then you are left with 5x=17, divide 5 on both sides you should get x=7/5

Hope this helps!

Find the missing value using the given information

(4,p), (p,-3), m=5/3

Answers

Answer:

p = 11/8

Step-by-step explanation:

We are trying to find the slope, so use the slope formula

m = ( y2-y1)/(x2-x1)

  5/3  = ( -3 -p)/ ( p-4)

Using cross products

5(p-4) = 3(-3-p)

5p-20 = -9-3p

Add 3p to each side

5p+3p -20 = -9-3p+3p

8p-20 = -9

Add 20 to each side

8p-20+20 =-9+20

8p =11

Divide by 8

8p/8 = 11/8

p = 11/8

A caterer needs between 42 and 50
cupcakes for dessert. Name two possible
numbers between 42 and 50 that are
multiples of 4. Explain.

Answers

Answer:

404 & 408

Step-by-step explanation:

The width of a rectangle is 6 kilometers
a
less than twice its length. If its area is
56 square kilometers, find the
dimensions of the rectangle.

Answers

Answer:

9,333333333333333 and 6 Km

Step-by-step explanation:

The width of a rectangle is 6 kilometers

less than twice its length. If its area is

56 square kilometers, find the

dimensions of the rectangle.

the area of ​​the rectangle is found by multiplying the width by the height, you have the area and the width, divide the area by the width and find the length

56 : 6 = 9,333333333333333 Km

-----------------------------

check

9,333333333333333 * 6 = 56

the answer is good

Solve the Quadratic

2x^2–5x-8=0

Solution 1:
Solution 2:

Answers

[tex]2x^2 -5x-8 =0\\\\\implies x = \dfrac{ -(-5) \pm \sqrt{(-5)^2 - 4\cdot 2 \cdot (-8)}}{2 \cdot 2}\\\\\\\implies x = \dfrac{5 \pm \sqrt{89}}{4}\\\\\\\text{Hence}~ x = \dfrac{5 + \sqrt{89}}{4},~~ x = \dfrac{5 - \sqrt{89}}{4}[/tex]

Answer:

[tex]\sf \boxed{\sf x=\frac{5+\sqrt{89}}{4}}[/tex]

[tex]\sf \boxed{\sf x=\frac{5-\sqrt{89}}{4}}[/tex]

✰Step-by-step explanation✰ ⤵

[tex]\sf 2x^2-5x-8=0[/tex]

☁ We'll solve this equation using The Quadratic Formula:

[tex]\boxed{\sf \cfrac{-b\pm \sqrt{b^2-4ac}}{2a}}[/tex]

A= 2, b= -5, c= -8

[tex]\sf x=\cfrac{-\left(-5\right)\pm \sqrt{\left(-5\right)^2-4\times \:2\left(-8\right)}}{2\times \:2}[/tex]

[tex]\mapsto \sf \sqrt{\left(-5\right)^2-4\times \:2\left(-8\right)}[/tex]

[tex]**\sf \left(-5\right)^2=5^2[/tex]

[tex]\mapsto \sf \sqrt{5^2+4\times \:2\times \:8}[/tex]

[tex]\mapsto \sf \sqrt{5^2+64}[/tex]

[tex]\mapsto \sf \sqrt{89}[/tex]

______________

[tex]\sf x=\cfrac{-\left(-5\right)\pm \sqrt{89}}{2\times \:2}[/tex]

☁ Now, we'll Separate solutions, first, we'll solve the equation when ± is plus:

[tex]\mapsto \sf \cfrac{-\left(-5\right)+\sqrt{89}}{2\times \:2}[/tex]

☁ Multiply 2*2 =4

[tex]\boxed{\sf \cfrac{5+\sqrt{89}}{4}}[/tex]

_________________

☁ Now solve the equation when ± is minus:

[tex]\mapsto \sf \cfrac{-\left(-5\right)-\sqrt{89}}{2\times \:2}[/tex]

☁  Multiply 2*2 =4

[tex]\boxed{\sf \cfrac{5-\sqrt{89}}{4}}[/tex]

[tex]\sf Solution \:1:\boxed{\sf x=\frac{5+\sqrt{89}}{4}}[/tex]

[tex]\sf Solution \:2:\boxed{\sf x=\frac{5-\sqrt{89}}{4}}[/tex]

☁❅☁❅☁☁❅☁❅☁☁❅☁❅☁❅☁

Learn more: https://brainly.com/question/22286698

Is (x + 6) a factor of f(x) = x3 − 3x2 + 2x − 8? Show how to use either the remainder theorem or the factor theorem to explain your reasoning.

Answers

Answer:

x + 6 is not a factor of f ( x ) = x³ - 3x² + 2x - 8 because when -6 is substituted into the function, the answer is not 0.

Step-by-step explanation:

→ Substitute x = -6 into f ( x )

( 6 )³ - 3 × ( 6 )² + ( 2 × 6) - 8

→ Simplify

216 - 108 + 12 - 8

→ Simplify further

112


A delivery company has a fleet of vans. The annual operating cost in dollars) per van is C = 0.37m + 2600, where m is the number of miles traveled by a van in a year. What number
of miles will yield an annual operating cost of $13,700?
mi

Answers

Answer:

Step-by-step explanation:

put C=13,700 and find m

The number of miles that will yield an annual operating cost of $13,700 is approximately 30,000 miles.

How to determine What number of miles will yield an annual operating cost of $13,700

To find the number of miles that will yield an annual operating cost of $13,700, we need to solve the given equation for \(m\):

\[C = 0.37m + 2600\]

Given \(C = 13700\), we can substitute this value into the equation and solve for \(m\):

\[13700 = 0.37m + 2600\]

Subtract 2600 from both sides:

\[11100 = 0.37m\]

Now, divide both sides by 0.37:

\[m = \frac{11100}{0.37}\]

Calculate the value of \(m\):

\[m \approx 30000\]

So, the number of miles that will yield an annual operating cost of $13,700 is approximately 30,000 miles.

Learn more about operating cost at https://brainly.com/question/30566291

#SPJ3

2
Select the correct answer.
Which statement is true about this equation?
-412p+5) + Bp=-11
A. The equation has one solution, p=2.
B. The equation has one solution, p=-2.
C. The equation has no solution.
D. The equation has infinitely many solutions.

Answers

Step-by-step explanation:

The equation has infinite solution p=2 that's tour variable

Other Questions
For the first part of this activity, you will be given a hypothetical monthly income, a list of your basic monthly bills, and a brief description of your living situation and daily life.Based on that information, you will create a monthly budget and financial plan that allows you to pay all of the necessary bills while also having enough money left over to live for the month.You currently work as an elementary school teacher.Your annual salary is $45,000You bring home a weekly paycheck and your total monthly income, after taxes, is $2,850.00You live alone in an apartment with the following bills:Monthly rent: $1,000Electric Bill: $82Gas and Water: $44Internet: $75Other monthly bills include:Cell Phone: $85Student Loan: $200Car Insurance: $130Gym Membership: $20Other details and expenses:You live a pretty simple life. You are single and enjoy going out to dinner with friends once or twice a month.You enjoy eating healthily and generally spend a good portion of your income on purchasing organic food. You like to grocery shop weekly and, on average, spend $100 per week.You have a dog and he is due for a monthly check-up this month. You estimate this will cost around $150, but you have not scheduled the appointment yet.You are relatively healthy and rarely visit the doctor, but you do have asthma that requires monthly inhalers. These are not covered by insurance and cost you $110 per month.You love treating yourself to a movie. A movie ticket costs $10.There is a concert that your friends have asked you to attend this month. Tickets are $250.You opened a savings account several months ago and set a goal to deposit $200 into it each month.Your Moms birthday is this month and you want to send her flowers. It will cost $75 to send her a beautiful bouquet.The service light recently came on in your car. You have been avoiding taking it to the shop because you anticipate that it will cost anywhere from $150-$300. But if your car breaks down, you will not be able to get to work. you are passing a firearm to another person what should you do before unloading the firearm? Imagine that your parents were starting a small business, and they wanted to upgrade their data storage. Would you recommend a fileserver, networkattached storage, or the cloud? Why? What are some possible disadvantages of your recommendation that they should be aware of? Line A has a slope of -and passes through the pointLine B has a slope of 3 and passes through the point (-32, -2)Find the point where line A intersects line B. Define computer software with its importance in computer system Which one of the following salts has the highest molar solubility in water? An object's inertia causes it to come to a rest position. toby used 4 inches of tape to wrap a gift how much tape will he need to wrap 5 more of the same gift? Determine the equation of the circle graphed below Kinetic energy is described asQuestion 1 options:MovementDecreasing energyStored energyElastic For an object spinning around a central point, what will happen if its distance from the center is decreased?A. Nothing will change.B. Its acceleration will decrease.C. Its acceleration will increase.D. The centripetal force will decrease. Select the correct answer.If you roll a fair die twice, what is the probability of getting an even number at least once?A. 0.75B. 0.36C. 0.5D. 0.25 If we play a game where I start with 2 dollars and you start with one dollar, and I have a probability of 1/3 of winning a dollar from you and you have a 1/3 probability of winning a dollar from me, what is the probability that I win all of your money A student is writing an essay about the future of space exploration. Which sources are the most reliable? Select all that apply. In November 2021, Kortney (who is a self-employed management consultant) travels from Chicago to Barcelona (Spain) on business. She is gone 10 days (including 2 days of travel) during which time she spends 5 days conducting business and 3 days sightseeing. Her expenses are $1,500 (airfare), $200 per day (meals at local restaurants), and $400 per night (lodging). Because Kortney stayed with relatives while sightseeing, she only paid for 5 nights of lodging. Compute Kortney's deductions for the following expenses. 2) Which of the following represents an equation of a line parallel to one whose equation is 2y + 8x = 18?A) y = -4x + 3B) y = 4x+ 7C) y = 8x + 2D) y = -8x + 9 Sponge is to bubble as ___ is to :A) massiveB) SolidC) ElasticD) Inflexible why did people in the neolithic age live together in larger groups, compared with earlier times? Can someone help? (NO LINKS!)Thank You! A judge tries to save his friend, the defendant in a drug related case, from embarrassment by closing the trial to public and the media.Amendment involved: Was it violated?: How?: