Un químico agrega cierta cantidad de una solución de 86% de alcohol a 11 litros de otra solución al 71% de alcohol y obtiene una solución al 77% de alcohol encuentre la cantidad de litros de la primera solución que se agregaron a la segunda

Answers

Answer 1

Answer:

Step-by-step explanation:

Sea x la cantidad de litros de la mezcla al 86%

x× 86% + 11 × 71% = (x + 11) × 77%

0.86x + 7.81 = 0.77x + 8.47


Related Questions

PLEASEEEEE HELPPPPPP ASAPPPPPPPP

Answers

9514 1404 393

Answer:

  64r -48r -144

Step-by-step explanation:

The January cost expression is ...

  62p -48p -144 -432 = profit

The cost is identified as having 3 components, so the profit will have 4 components:

  (selling price)×p - ((cost per unit)×p +(fixed monthly cost)) -(first month startup cost) = profit

Comparing this to the given equation, we identify the components as ...

  selling price = 62

  cost per unit = 48

  fixed monthly cost = 144

  first month startup cost = 432

We note that 432 = 3×144, so is consistent with the description of startup costs.

Increasing the selling price by $2 will raise it from 62 to 64. In February, the initial month startup cost disappears, so the profit equation becomes ...

  (selling price)×r - ((cost per unit)×r +(fixed monthly cost)) = profit

  64r -48r -144 = profit

I really really need the answer to this NOW

Answers

Answer:

185 and 1/3

Step by step explanation

A population of values has a normal distribution with μ = 245.3 and σ = 96 . You intend to draw a random sample of size n = 50 . Find the probability that a single randomly selected value is greater than 246.7. P(X > 246.7) = 0.0146 Incorrect Find the probability that a sample of size n = 50 is randomly selected with a mean greater than 246.7. P(M > 246.7) = Enter your answers as numbers accurate to 4 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

Answers

Answer:

0.4589

Step-by-step explanation:

We solve using z score formula

The z score formula for a random number of samples is:

z = (x-μ)/σ/√n, where x is the raw score, μ is the population mean, and σ is the population standard deviation

Hence:

z = 246.7 - 245.3/96/√50

z = 0.10312

Probability value from Z-Table:

P(x<246.7) = 0.54107

P(x>246.7) = 1 - P(x<246.7) = 0.45893

Approximately to 4 decimal places = 0.4589

The probability that a single randomly selected value is greater than 246.7 is 0.4589

y + 4 + 2x + 3y

can someone simplify it

Answers

Answer:

2x+4y+4

Step-by-step explanation:

Answer:

y×(1+3)+2×(2+x)

Step-by-step explanation:

y(1+3)+2x+4

2(x+2)

Jenny is renting a moving truck. She will have to pay a one-time fee for insurance coverage and pay the daily rate for the truck each day she uses it. The total cost of renting the truck in terms of the number of days the move will take can be modeled by the equation: y = 100x + 85. A. What is the slope? B. What is the y-intercept?

Answers

Answer:

Slope is 100

y-intercept is 85

Step-by-step explanation:

The equation of a straight line can be modeled according to the function;

y = mx + c

where m is the slope and c is the y-intercept

comparing what we have ;

y = 100x + 85 with the standard form ;

Slope will be 100 and y-intercept is 85

Mr. Wilson divided his money between Dennis and Margaret in the ratio 4:2.
Margaret got the smaller amount of $1256. How much did Dennis receive?

Answers

Answer:

$2512.00

Step-by-step explanation:

if Margaret is = to 2 then Dennis = 4

if Margaret got the smaller amount of $1256 and 2 is multiplied to by 2 to get 4. then all you have to do is multiply Margret's amount by two and then you will get Dennis's amount.

hope this helps

love E

Please answer this question :)

Answers

Answer:

5.2692307692307692307692307692308

Step-by-step explanation:

hope this helps!  :)

5.27. I rounded the number cuz if not, it would have gave me a big #.

3) A cookie recipe calls for 9 cups of flour for 4
batches of cookies. How many cups of flour
per 1 batch of cookies? How many cups of
flour are needed for 11 batches of cookies?

Answers

Can I have a cookie????

For Part A, use a piece of paper. For parts B-D, use the text box below.

A. Plot the data on a piece of paper. (make sure you label your axes and put a title). Draw a line of best fit.

B. Write an equation for the line of best fit.

C. What income would a person have if he attended school for 2 years? Explain how you got the answer.

D. How many years would you need to attend college in order to have an income of at least $50,000?

Answers

Answer:

wait you want me to answer this

HELP PLZ. ASAP I need an answer.

Answers

Answer:

6.5

Step-by-step explanation:

You can see that the total Coast change from Month 0 to Month 2 by 13$ (35-22= 13). Since these are two month we need to divide them by 2 (13/2= 6.5)

6.5 is the total rate of change per months

Tre has to pay $180 to book the recording studio plus $30 per hour of recording time. The function c(h)=30h+180 relates the total cost, c(h) of the recording session (in dollars) to the number of hours, (h) needed to record the tracks.

Answers

Answer:

1. $3302. 11.5 hours

Step-by-step explanation:

Continuation of the question:

1. Find c (5) and interpret your solution in the context of the problem 2. Find the value of h when c() = 525 and interpret your solution in the context of the problem

Solution

c(h) = 30h + 180

1 ...............................................

c(5) = 30*5 + 180 = $330

2 ...............................................

525 = 30h + 18030h = 525 - 18030h = 345h = 345/30 h = 11.5 hours

Why does my girlfriend blush when I tell her I love her

Answers

Bc she’s ur girlfriend and when people say that they blush

Answer:

Because she feel's loved.

Step-by-step explanation:

When you tell her that you love her , it make's her feel like she is worth some thing. She feel's the same way about you so she blushes

Cardi B is buying a condo built within
a skyscraper. She learned that each floor is 13 feet tall.

Write an expression to represent the height of the skyscraper if it has f
floors, where f is the number of floors.

How tall, in feet, would her condo be in the skyscraper if she was on the 26th floor?
PLEASE HELP... 25 points

Answers

Answer:

13f is equation

which is floors times height

Step-by-step explanation:

26*13=338

338 feet tall

Brainliest appreciated!

Answer:

(H)=13f and  the height is 338ft

Step-by-step explanation:

height of skyscraper=h

f=floors

height per floor is 13ft...

(H)=13f

(H)=13*f, if f is 26, then to find height multiply 13 by 26

doing this you get 13*26=338ft

Deion divided 1/2 of a liter of plant fertilizer evenly among some smaller bottles. He put 1/8 of a liter into each bottle. How many smaller bottles did Deion fill?

Answers

Answer:

4 bottles

Step-by-step explanation:

Given

[tex]Fertilizer = \frac{1}{2}L[/tex]

[tex]Bottles = \frac{1}{8}L[/tex]

Required

Determine the number of bottles

Represent the number of bottles with N

This implies that N bottles of [tex]\frac{1}{8}L[/tex] fit into [tex]\frac{1}{2}L[/tex] of fertilizer. The relationship between them is:

[tex]Fertilizer = Bottles * N[/tex]

[tex]\frac{1}{2}L = \frac{1}{8}L* N[/tex]

[tex]\frac{1}{2} = \frac{1}{8}* N[/tex]

Multiply through by 8

[tex]8 * \frac{1}{2} = 8 * \frac{1}{8}* N[/tex]

[tex]4 = 1* N[/tex]

[tex]4 = N[/tex]

[tex]N = 4[/tex]

Hence, there are  N = 4

2(2x+2)=7x+2-3x+2
solve

Answers

Answer:

All real numbers make this answer true: so x= all real numbers

Step-by-step explanation:

HELPPPPPPPPPPPP
i give brainliest!

Answers

Answer:

C

Step-by-step explanation:

The scuba diver started at -55 feet as it says below the surface then went up 20 feet so the equation would be -55+20=-35

the answer is C hope this helps :)

ANSWER QUICK FOR BRAINIEST: When using scientific notation, a positive exponent means . . . the standard number is less than one the negative sign doesn't have a meaning None of the above the standard number is greater than one

Answers

Answer:

The standard number is greater than one. Negative means it's going to be .xxx

Answer:

Ste scientific notation, a positivep-by-step explanation:

Create a 5th degree trinomial that has a constant term of 3.

Answers

Answer:

[tex]2x^5+3x^2+3[/tex] is a trinomial having with:

three terms degree 5 and The constant term '3'

Step-by-step explanation:

Considering the trinomial

[tex]2x^5+3x^2+3[/tex]

Any polynomial with 3 terms is a trinomial, so it is a trinomial.

It is clear that '5' is the highest power of the 'x' variable. so, the polynomial has a degree of 5.

'3' is the constant term. The reason is that any term with no variable is called a 'constant' term. So, '3' is the constant term.

Therefore, [tex]2x^5+3x^2+3[/tex] is a trinomial having with:

three terms degree 5 and The constant term '3'

suppose an elevator starts at the top floor of a high rise building at a height of 500 feet above the ground floor and descends without stopping at a rate of 17 seconds
Write a function that describes the height, h of the elevator after t seconds in function form

Answers

Answer:

answer is in the picture

Step-by-step explanation:

hope this helps

good night everyone!!!

Answers

Answer:

Sleep well

Step-by-step explanation:

Thank u so much... And thk for the FREE POINTS... <3

3/13% of a quantity is equal to what fraction of the​ quantity?

Answers

Answer: 3/1300

Sorry I’m late !!

Mr. K cooked down 2 pumpkins yesterday. He did this to make pumpkin pies for Thanksgiving. He was able get 30.5 cups of pumpkin. If Mr. K needs 1 ¾ Cups of pumpkin to make 1 pie, how many pies can he make with the pumpkin he cooked down last night? double work pleaseeee helpp meeee

Answers

He can make 17 pies and here are the steps :)

Parallel and perpendicular line what do the following two equations represent? y-3=2(x-3)

y+5=2(x+1)

A) The same line

B) Distinct parallel lines

C) Perpendicular lines

D) Intersecting, but not perpendicular lines

Answers

the answer is A) the same line

Answer:

A or D

Step-by-step explanation:

9/4 plus 3/8 (please show work)

Answers

Answer:

21/8 or 2 5/8

Step-by-step explanation:

9/4 + 3/8

The least common denominator being 8 so you would add the numerators.

18+3/8

Which would be:

21/8 or, as a mixed fraction, 2 5/8

if you answer this right I will give you Brainliest
What is 2+2

Answers

Answer:

fish

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

the distance traveled by an object divided by the time in which the distance was traveled is called the__of an object

Answers

Answer:

speed (v)

Step-by-step explanation:

v = d/t

v = speed

d = distance travelled

t = time taken

a=3b+4c-a is this a litteral equation

Answers

Answer:

a= 3b+4c/2

Step-by-step explanation:

2a=3b+4c

a= 3b+4c/2

Hi, Can you help me with the area and perimeter?

Answers

for the area i got 44

When Judy worked 4 hours and Ben worked 1 hour, their combined pay was $75. When Judy worked 2 hours and Ben worked 6 hours, their combined pay was $120. Find the hourly rate of pay for Ben and Judy.

Answers

Answer:

They each earn 15 an hour

Step-by-step explanation:

Answer:

They both make $15

Step-by-step explanation:

In the first scenario Judy worked for 4 hours, (4)*(15)=60 plus Ben, (1)*(15)=15 which equals 75. In the second scenario, Judy works 2 hours so (2)*(15)=30 and Ben works 6, (6)*(15)= 90 which is 120.

5. Jordan works at the car wash a few hours a week and works mowing lawns for extra money.
Because of his schoolwork, he can't work more than 10 hours per week. Write a rule to see possible
solutions for his work schedule. Let x represent hours at the car wash, and y represent the hours
mowing lawns.

Answers

Answer:

The rule is

x + y ≤ 10

Step-by-step explanation:

Here, we want to write a rule that can help get solutions for the individual work hours

The number of hours for car wash is x while the number of hours for mowing lawns is y

Since he cannot work more than 10 hours, he can still work less than 10 hours

What we just have is that the addition of both working hours must not be over 10

So the rule to write is;

x + y ≤ 10

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