If y varies inversely as x and y = 8 when x = 3, find the value of x when y = 12

Answers

Answer 1

Answer:

x = 7

Step-by-step explanation:

................Hi.....................


Related Questions


A farmer has 48 feet of fence with which to make a corral. If he arranges it into a rectangle that is twice as
long as it is wide, what are the dimensions?
The shorter side is ?
feet while the longer side is ?
feet.

Answers

Answer:

The shorter side is 8 feet

the longer side is 16 feet

Step-by-step explanation:

lets call the shorter side x.

let's call the longer side 2x (because it's twice as long as the shorter side)

you know that the perimeter is 48 feet.

the perimeter would be 2(short side) + 2(long side)

using this, you can make the following equation:

2(x) + 2(2x) = 48

open the parenthesis.

2x + 4x = 48

6x = 48

x = 8

2x = 16

Which of the following would be a good name for the function that takes the length of a race and returns the time needed to complete it O A Length(time) O B. Timelength) O C. Costume D. Timerace​

Answers

Answer:

The answer would be B, Time(Length)

Step-by-step explanation:

You simply replace the two values and get (x,y).

Hello, can someone pls help me ty!​

Answers

Answer:

C, 5/2

Step-by-step explanation:

3 I2x -1I + 4 = 16

Isolate absolute value:

3 I2x -1I + 4 - 4 = 16 - 4

3 I2x -1I= 12

(3 I2x -1I) / 3 = 12 / 3

I2x -1I= 4

Since the question is only asking for the positive, all you need to solve for is the +4. Solve for x

2x -1 = 4

2x -1 + 1 = 4 +1

2x = 5

2x / 2 = 5 / 2

x = 5/2 or C

What’s 1+1=
A.4
B.3
C.2
D.1

Answers

Answer: C

Step-by-step explanation:

1 + 1 is 2. So imagine taking one banana and one more banana and adding them together count how many bananas you would have together. One banana plus another banana would equal 2 bananas. You can also imagine, or use other objects when adding. So therefore the answer is 2, which is letter C.

Solve for t
5t - 2 = 6t - 7

Answers

Answer:

The answer to the question is 5 (positive 5)

Abbie drove 325 miles in 5hrs. What is this rate in feet per second?

Answers

Answer:

4400

Step-by-step explanation:

Answer:

The rate should be 95.33 feet per second assuming that she drove with a constant speed

Step-by-step explanation:

First you divide 325 by 5. And you get 65 which is how many miles per hour she went. Then you can put it in a unit converter to change miles per hour to feet per second. And it should be 95.33 (sorry for my lack of a detailed explanation of how to transform miles per hour into feet per second)

A suite in a deluxe hotel is rented for 1, 2, or 4 days. The
hotel charges a $100 deposit and $100 per day. Identify the
function that describes this situation and its domain and
range.

Answers

Answer:

f(d) = 100 + 100d

D = {1, 2, 4}

R = {$200, $300, $500}

Step-by-step explanation:

you just gotta look and remember about the first 100 day depossit which would make the prices go up

Given the following number in standard form, how would you represent the number in the hundreds place using expanded exponential notation?

7321

Answers

Answer:  3*10^2

====================================

Work Shown:

7321 = 7000 + 300 + 20 + 1

7321 = 7*1000 + 3*100 + 2*10 + 1*1

7321 = 7*10^3 + 3*10^2 + 2*10^1 + 1*10^0

Side note: The exponents count down 3,2,1,0. You can think of a similar thing like 7x^3+3x^2+2x+1 and simply replace x with 10.

A bag with quarters and nickels contains 87 coins.The total amount is $7.35. How many quarter and nickels are in the bag

Answers

Answer: 72 nickels and 15 quarters

Step-by-step explanation:

72 times .05 = 3.6 or $3.60

15 times .25 = $3.75

Total = $7.35

.05 is representing the nickels and .25 is representing the quarters and if you take a calculator and do 87-72 you get 15 and you can set it up yourself to double check. But I wouldn't recommend doing it with pennies that's how I got confused so many times and you can also give yourself a similar problem if you want to make sure you know how to do it. Sorry if this was confusing.

ANSWER THIS ASAP !!!!

Answers

Answer: f(-5)= 7

Step-by-step explanation:

The x value is -5 so look for the y value of the x value which is 7

Answer:

f(-5) = 7

Step-by-step explanation:

f(x) is referring to the y value, so what it is equal to would be the x value at that spot

in this case the y value is -5 so the x value is 7

Summarize the two different ways an exponential
equation can be solved.

Answers

Answer:123

Step-by-step explanation:123

Tres aviones salen a la misma hora de un mismo aeropuerto, el primero sale cada 8 dias, el segundo cada 10 dias, y el tercero cada 20 dias. Si salen el 2 de enero, ¿cuales seran las fechas proximas en que volveran a salir juntos? ( el año es de 365 dias)

Answers

Responder:

Después de 40 días (11 de febrero)

Explicación paso a paso:

Dado que :

El avión 1 sale cada 8 días

El avión 2 sale cada 10 días

El avión 3 sale cada 20 días

Si todos se van el 2 de enero; La próxima fecha en que se irán juntos se puede obtener obteniendo el mínimo común múltiplo de los días de cada avión:

___8____10_____20

2 | _4____5______10

2 | _ 2____5______ 5

2 | _ 1 ____5______ 5

5 | _ 1 ____ 1 ______ 1

El mínimo común múltiplo es, por tanto;

2 * 2 * 2 * 5 = 40

Todos se irán juntos nuevamente después de 40 días:

(2 de enero + 40 días) = ​​11 de febrero

a child swim 25 yards in 12 seconds how many feet can he swim per second

Answers

Answer:

About 2 seconds

Step-by-step explanation:

25/12

2.0833333333333333333333333333333333333333333333333333333333333333................

2.0833 yards per second

help meeeeeeeeeeeeeeeeeeeeeef(x) = 2x - 7. evaluate f(0.5)

Answers

Answer:

f(x)=-6

Step-by-step explanation:

f(0.5) means that x=0.5, so you substitute the x with .5 and multiply it times 2 which will get you 1. Then you subtract 7 to get -6.

Answer:

f(0.5)=-6

Step-by-step explanation:

f(x)=2x-7    f(0.5)

Just put in 0.5 for the x.

f(x)=2(0.5)-7

f(x)= 1 - 7

f(0.5) = -6

I hope you understand how to do these

Hope this helped :)

One and two step equations

Answers

Answer:

5 hours have passed.

Step-by-step explanation:

82 + 0.6x = 85

0.6x = 3

x 5

Danielle used 8 centimeters of tape to wrap 4 presents.
How many presents did Danielle wrap if she used 30
centimeters of tape?

Answers

Answer:

7

Step-by-step explanation:

8/4 =4/1    to   30/?

30/4=7.4    

7.4

30/7.4=7

You pay $45 per month for cable TV. Your friend buys a satelliteTV receiver for $99 and pays $36 per month for satellite TV. Your friend claims that the expenses for a year of satellite TV are less than the expenses for cable TV in a year. Write and solve an equation to determine when you and your friend will have paid the same amount for TV services. Is your friend correct? Explain

Answers

Answer:

yes

Step-by-step explanation:

Yes, he is correct because he pays $36 a month with the satellite TV receiver he payed $135 that month.\But if we do 36x12=432+99=531and the cable tv cost 45x12=540 so even when we add the satellite TV receiver price on his ours is still more expensive

The required month in which both pay the same amount is 11 months. And our friend is right, satellite tv is less expensive than Cable Tv.

Given that,
You pay $45 per month for cable TV. Your friend buys a satellite tv receiver for $99 and pays $36 per month for satellite TV.
To determine when you and your friend will have paid the same amount for TV services.

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
let x be the number of months,
According to the question,

For the cost of cable TV = 45x
For satellite TV = 99 + 36x
Now,
99 + 36x = 45x
99 = 45x - 36x
9x = 99
x = 11

Now cost at 12 months,
Cable = 45 * 12 = 540
satellite = 99 + 36 * 12 = 531
So, satellite tv is less expensive than Cable Tv

Thus, the required month in which both pay the same amount is 11 months. And our friend is right.

Learn more about simplification here:
https://brainly.com/question/12501526

#SPJ2


18pts Solve for x. -3x + 6 = 2x - 24
A) -30
B) -6
C) 6
D) 30

Answers

Answer: B

Step-by-step explanation: x = 6

Solve for 1.
3t - 2 = -11
OA. -12
OB. -11
O c. 9
D. -3

Answers

Answer:

B

Step-by-step explanation:

Answer:

t = - 3

Step-by-step explanation:

Assuming you mean solve for t:

[tex]3t-2=-11\\\\3t-2+2=-11+2\\\\3t=-9\\\\\frac{3t=-9}{3}\\\\\boxed{t=-3}[/tex]

Hope this helps.

A teacher can spend as much as $125.00 to take students to a movie.
A movie theater charges a $10.00 group fee and $5.50 per ticket.
What is x in the problem?

Answers

Answer:

x is the per ticket, for example it would be 5.50x + 10.00 = 125.00

Step-by-step explanation:

Write the coordinate of G'after G(1, 2) was reflected over the line y=x.

Answers

Answer:

(-1,2)

Step-by-step explanation:

Answer:

(2,1)

Step-by-step explanation:

PLEASE HELP!!

When solving equations containing rational expressions, which of the following is a true statement?

A. The multiplication property of equality only applies to equations where the rational expressions are identical.

B. The solution to an equation with rational expressions must be a rational expression.

C. There is no need to check the solution to an equation with rational expressions since it is guaranteed to be right.

D.The addition property of equality applies to equations with rational expressions.​

Answers

Answer:

D.The addition property of equality applies to equations with rational expressions.​

Step-by-step explanation:

Answer:

The addition property of equality applies to equations with rational expressions.​

Step-by-step explanation:

just trust me

(f + h)(x)
given f(x)= 3x-2x+4, g(x)= 8x-2, h(x)= 3x +2

Answers

Answer:

To find the answers, all I have to do is apply the operations (plus, minus, times, and divide) that they tell me to, in the order that they tell me to.

(f + g)(x) = f (x) + g(x)

= [3x + 2] + [4 – 5x]

= 3x + 2 + 4 – 5x

= 3x – 5x + 2 + 4

= –2x + 6

(f – g)(x) = f (x) – g(x)

= [3x + 2] – [4 – 5x]

= 3x + 2 – 4 + 5x

= 3x + 5x + 2 – 4

= 8x – 2

(f  × g)(x) = [f (x)][g(x)]

= (3x + 2)(4 – 5x)

= 12x + 8 – 15x2 – 10x

= –15x2 + 2x + 8

\left(\small{\dfrac{f}{g}}\right)(x) = \small{\dfrac{f(x)}{g(x)}}(  

g

f

​  

)(x)=  

g(x)

f(x)

​  

 

= \small{\dfrac{3x+2}{4-5x}}=  

4−5x

3x+2

​  

 

My answer is the neat listing of each of my results, clearly labelled as to which is which.

( f + g ) (x) = –2x + 6

( f – g ) (x) = 8x – 2

( f  × g ) (x) = –15x2 + 2x + 8

\mathbf{\color{purple}{ \left(\small{\dfrac{\mathit{f}}{\mathit{g}}}\right)(\mathit{x}) = \small{\dfrac{3\mathit{x} + 2}{4 - 5\mathit{x}}} }}(  

g

f

​  

)(x)=  

4−5x

3x+2

Step-by-step explanation:

Solve for m.

5 + 2m = 9

Answers

Answer:

m = 2

Explanation:

Jill earned $40 from a carpool plus $9 per hour (h) babysitting this week. Which of the following expressions best represents Jill's income for the week?

A 9 + 40h NEED HELP PLZ SOMEONE :(
B 9 + h + 40
C 9h + 40
D 9 + 40

Answers

Answer:

9h + 40

Step-by-step explanation:

Since Jill earns 9 dollars per hour, you multiply the amount of hours she works by the amount she makes per hour (9h), then you add 40 which is a set amount.

y = 9h + 40

I think it’s C. 9h + 40

Write this polynomial expression in its simplest form. Show your work.

Answers

Step-by-step explanation:

(3x² + 4x - 8) - (-2x² + 4x + 2)

[3 - (-2) = 5] , [ 4 - 4 = 0] , [ (-8) - 2 = -10]

5x² + 0x - 10

(or)

5x² - 10

Answer:

5x² - 6

Step-by-step explanation:

Simplify

(3x² + 4x - 8) - (-2x² + 4x + 2) =3x² + 4x - 8 + 2x² - 4x - 2 =(3 + 2)x² + (4 - 4)x - (8 - 2) =5x² + 0x - 6 = 5x² - 6

pleas help me quickly !

Answers

Answer:

-36

Step-by-step explanation:

-(36/-6) to the power of 2 is -36.

36, simplify the fraction it equals -6, -6 squared equals 36 correct me if I’m wrong but hope this helps

a + 65 = 92
please help​

Answers

Answer:

a=27

Step-by-step explanation:

Answer:

a = 27

Step-by-step explanation:

a + 65 = 92

subtract 65 from both sides

a = 27

Help needed ASAP will give brainliest and 5 stars rate :)

Answers

Answer:

30km/h

Step-by-step explanation:

takes 4 hours to go 120km so 120/4=30 so they travel 30 km in one hour

As a director of operations for a fast-food company, you oversee two of the company's restaurants. One of the stores reports their revenue for the year as 0.15 of the company's revenue, and the other restaurant reports 21% of the company's revenue. What is the total percentage of the company's revenue that your two stores report? 3.6% 6% 21.15% 22.5% 36%

Answers

Answer:

Total = 36%

Step-by-step explanation:

Given

Company A = 0.15

Company B = 21%

Required

Determine the total revenue

Total is calculated as thus:

Total = Company A + Company B

Total = 0.15 + 21%

Represent 0.15 as %

Total = 0.15*100% + 21%

Total = 15% + 21%

Total = 36%

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