How many gallons of a 22% salt solution must be
mixed with a 38% salt solution to make 20 gallons of
a 28% salt solution?

Answers

Answer 1

Answer:

You will  need 12.5 gallons of the 22% salt solution and 7.5 gallons of the 38% of the salt solution

Step-by-step explanation:

.22x + .38(20 -x) = .28(20)  I want to clear the decimal, so I will multiple through by 100

100[.22x + .38(20-x)] = [.28(20)]100

22x + 38(20-x) = 28(20)  Distribute the 38

22x + 760 -38x = 560 combine the x's

-16x + 720 = 560 Subtract 720 from both sides

-16x = -200  Divide both sides by -16

x = 12.5

20 - 12.5 = 7.5


Related Questions

Jim says,
"When you subtract a number from 10, the answer will always be less than 10" Is Jim correct?

Answers

Yes. Example let’s say 2 is the number. If we subtract 2 from ten we get 8 which is less than 10. Even if the number number is greater than ten it would result in a number which less than ten because it would result in a negative number.
Yes Jim is correct.
For example if you subtract 1 from 10 the answer is 9, which is less than 10.
Or if you subtract 10 from 10. The answer is 0. Which, again, is less than 10


Suppose m = 25-0.15 n describes the amount of money remaining on a 25 phone card m , as a function of the number of minutes of calls you make n . What are a reasonable domain and range?

Answers

A function's domain is the set of values ​​that can be put into the function. This set is the x-value of a function like f(x). In its simplest form, the domain includes all values ​​entering the function, and the range includes all values ​​output.

A function's range is the set of values ​​it takes on. This set is the values ​​that the function executes after inserting the x values. Those are the y-values.

The amount of money remaining is 25 on the phone card, and the value of m given is

M=25-0.15

25>=M>=0 (it is a 25 Dollar Phone Card)

25-0.15n>=0

N=<500/3

N>= 0

Their range and domain are

Range: 0=<N=<500/3

Domain: 0=<M=<25

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What are the coordinates of the point on the
directed line segment from (-8, 8) to (7,-7)
that partitions the segment into a ratio of 1 to 4?

Answers

The coordinates of the point on the directed line segment is (-5,5)

In the given sum we are using the internal division formula which goes like:  (x,y) = (nx₁ + mx₂)/(m+n), (ny₁ + my₂)/(m+n)

with the available data we can interpret that where m = 1 , n = 4 , (x₁,y₁) = (-8,8) , (x₂,y₂) = (7,-7)

substituting the given values in the above formulae

The coordinates of the point is :

(x,y) = (4(-8) + 1(7))/(1 + 4) , (4(8) + 1(-7))/(1 + 4)

= ( -32 + 7)/5, (32 - 7)/5

= (-25/5) , (25/5)

= (-5,5)

∴ (x , y) = (-5 , 5)

So here the coordinates are (-5 , 5) which directed line segment from (-8,8) to (7,-7) that partions the segment into a ratio of 1 to 4

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need help. every rectangle is a whole.​

Answers

The best product of the model is 3 * 5/6

How to determine the best product of the model?

On the grid, we have the following parameters

Three big rectangles5 shaded sections on each6 total sections

The best product of the model is then represented as

Number of big rectangles * Shaded Sections/Total sections

So, we have

3 * 5/6

Hence, the best product of the model is 3 * 5/6

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The point A has coordinates (5, -4)
The point B has coordinates (13, 1)
a) Work out the coordinates of the midpoint of AB.

Line L has equation y = 2 - 3x
b) Write down the gradient of Line L.

Line L has equation y = 2 - 3x
c) Does the point with coordinates (100, -302) lie on line L?
You must give a reason for your answer.

Answers

The midpoint of AB has coordinates (9, -1.5), the gradient of line L is -3 and the point (100, -302) doesn't lie on L.

What is a coordinate?

Coordinates are numerical lengths or angles that uniquely identify locations on two-dimensional (2D) surfaces or in three-dimensional (3D) space (3D). Mathematicians, physicists, and engineers employ a variety of coordinate schemes.

(a) Given point A (5, -4) and point B (13, 1)

Therefore, midpoint of AB is [tex](\frac{x1+x2}{2},\frac{y1+y2}{2})[/tex]

                                          [tex]or,(\frac{5+13}{2},\frac{-4+1}{2})[/tex]

                                          [tex]or, (\frac{18}{2},\frac{-3}{2} )[/tex]

                                          [tex]or,(9, -1.5)[/tex]

(b) In the equation [tex]y=2-3x[/tex], -3 is the gradient of line L.  

(c) The point with coordinates (100, -302) doesn't lie on L as it doesn't satisfy the equation [tex]y=2-3x[/tex]

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simplify the following expression: 5^2-4/5+2
step by step on getting the answer 3

Answers

Answer: 26 1/5 or Decimal Form: 26.2

Step-by-step explanation:

5^2-4/5 + 2

25 - 4/5 +2

131/5 = 26 1/5

Two angles form a linear pair. The measure of one angle is 1/3 the measure of the other angle. Find the measure of each angle.

Answers

Step-by-step explanation:

MARK ME AS A BRAINLIST. OK

On Monday, a bookstore sold 57 books. On Tuesday, the store sold 64 books. Let p represent the percent increase in the sale of books from Monday to Tuesday. Drag the tiles to fill in all the boxes and complete a proportion that can be used to find the value of p.

Answers

The value of the percent increase "p" is  12.28%.

Percent Increase can be calculated using the formula

Percent increase = (Amount increased/original amount) x 100

In the given question

Number of books sold on Monday = 57 books

Number of books sold on Tuesday = 64 books

Increase in number of books = books sold on Monday - books sold on Tuesday.

Substituting the values we get

Increase in number of books = 64-57 = 7

the percent increase = (7/57)x100

= 0.1228 x 100

= 12.28

Therefore , the value of the percent increase "p" is  12.28%.

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If the signs are _______, then ______ and take the sign of the number with the greatest absolute value

Answers

Answer: different and subtract go in the empty spaces

Pls pls help whoever gets it right gets a crown

Answers

First one: expand it and you’ll get the given above

A jar of jelly bean candies weighs
8
88 ounces. A container of caramel candies weighs
40
4040 ounces. Lúcia buys
10
1010 pounds worth of jelly bean candy jars and caramel candy containers for her big party. Given that there are
16
1616 ounces in a pound, which of the following equations correctly relates the number of jars of jelly bean candies,
j
jj, and the number of containers of caramel candies,
c
cc, that Lúcia bought?

Answers

The equation that relates the number of jars of jelly bean candies and the number of containers of caramel candies is 8/16 J + 40/16 c = 10.

How to illustrate the information?

The given parameters:

Weight of jelly bean can = 8 ounces

Weight of caramel candies, = 40 ounces

Amount of Jelly bean and caramel candies bought  = 10 pounds

Number of ounces in one pound = 16 ounces.

Therefore, the equation that relates the number of jars of jelly bean candies and the number of containers of caramel candies is 8/16 J + 40/16 c = 10.

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a + 2 = 5 is equivalent to 1/3a =1

Answers

Answer:

I think we're solving for A, so the answer would be 3

Step-by-step explanation:

Hope it helped

find the circumference of this circle

Answers

Answer:

Since the radius is 18 then the answer would be 113.1...

C=2πr=2·π·18≈113.097

Step-by-step explanation:

Hope it helps! =D

Answer:

C = 108 units

Step-by-step explanation:

using C = πd ( with π = 3 and d = 36 )

C ≈ 3 × 36 = 108 units

Shannon will be assigned at random to 1 of 6 P.E. classes throughout the day and 1 of 3 lunch times. What is the probability that she will be in the second P.E. class and the first lunch?
A. 1/18
B. 1/9
C. 1/6
D. 1/2

Answers

The correct option is A. 1/18. Shannon has a 1/18 chance of being in the second P.E. class along with the first lunch.

What are defined as independent events?

Two events are considered independent if the happening of the one doesn't affect the likelihood of the happening of the other.

The mathematical model of event independence A and B is the probability of both A and B occurring becoming equal to the product of a probabilities of A & B.

Now, for the stated question;

Let the probability that the Shannon will get second P.E class is P(A) = 1/6.

Now, Let the probability that the Shannon will get first lunch is P(B) = 1/3.

Ad, both events are independent.

Thus, the intersection will be -

P (A∩B) = P(A).P(B)

P (A∩B) = 1/6×1/3

P (A∩B) = 1/18.

Therefore, the probability that Sharron will be in the second P.E. class and the first lunch is 1/18.

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0.0061 Write this number in scientific notation
12.

Answers

Answer:

6.1 * 10^-3

Step-by-step explanation:

This is because 10^-3 = 0.001 so 0.0061=6.1 * 10^-3

Answer:

6,100,000,000

Step-by-step explanation:

0.0061 x 10^12 =6,100,000,000

Mike wants to build a rectangular picnic area using stone tiles. he has enough money to buy 24 tiles. what are all the possible dimensions of rectangles he can make for his picnic area

Answers

Answer:

1 by 24

2 by 12

3 by 8

4 by 6

Step-by-step explanation:

We look at all the factors of 24.

1, 2, 3, 4, 6, 8, 12, 24

He can make the area:

1 by 24

2 by 12

3 by 8

4 by 6


In a 20 -row theater, the number of seats in a row increases by three with each successive row. The first row has 18 seats.
c. Front-row tickets for a concert cost $ 60 . After every 5 rows, the ticket price goes down by $ 5 . What is the total amount of money generated by a full house?

Answers

The most commonly used explicit of an arithmetic sequence is given as,

an = a + (n - 1) d.

Each term in the sequence can easily be solved/computed without knowing the other terms in the sequence. Now by using the given information, we can say that,

First number a1 = 18

Tolerance d = 3

Now putting the values in the given formula, we will get,

an=a1+(n-1) d

=18+(n-1)3

=3n+15

20

= ∑ 3n+15

n = 1

Sn = ∑3n+15

=3∑n+15∑1

=3 n(n+1)/2+15n

Sn =3* 20(20+1)/2+15(20)

=30 (21) +300

=630+300

=930

Total Seats 930.

Now to find the number of seats on every five lines.

5 10 15 20

= ∑ 3n+15; ∑ 3n+15 ; ∑ 3n+15 ; Ticket price for each set. $55; $50; $45

= 120 * 60 + 195 * 55 + 270 * 50 + 345 * 45

= $46950

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¿Cuál es el radio de un circulo de 36 centímetros de perímetro?

Answers

There is a formula that relates circumference and radius of a circle. The formula is C=2πr, where π is roughly 3.14. So if the circumference is known, the radius can then be found using this formula.

Given:

Circumference of the circle =36 cm

The formula of circumference of the circle is C=2πr

Therefore,36=2πr

36=6.28r

π=3.14

r=36/ 6028

r=5.73cm

The radius of the circle is approximately

5.73cm.

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PLEASE HELP 25 pointss

Answers

The difference of the polynomials, (p² + p - 8) - (-4p² - p + 3), is: D. 5p² + 2p - 11.

How to Find the Difference of Two Polynomials?

To find the difference of two polynomials, group like terms together after opening up the parentheses, then combine the like terms together.

Given the polynomials:

(p² + p - 8) - (-4p² - p + 3)

Apply the distributive property to eliminate the parentheses

p² + p - 8 -1(-4p²) -1(-p) -1(3)

p² + p - 8 + 4p² + p - 3

Group like terms

p² + 4p² + p + p - 8  - 3

Combine like terms

5p² + 2p - 11

Thus, the difference of the polynomials, (p² + p - 8) - (-4p² - p + 3), is: D. 5p² + 2p - 11.

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Write in point-slope form an equation of the line through each pair of points. (1,0) and (5,5)

Answers

The equation of the line in point-slope form, which passes through the points located at (1 , 0) and (5 , 5), is y = 5/4(x - 1).

The equation of a line can be expressed in three different forms: standard form, slope-intercept form, and point-slope form.

The standard form of an equation of a line is expressed as ax + by = c, where a and b, if all possible must be integers, are the coefficients of variable x and y, respectively, and c is a constant. Meanwhile, slope-intercept form is given by the formula y = mx + b, where m is the slope of the line and b is the y- intercept. On the other hand, given the slope m and a point on the line (x , y), we can express the equation in point-slope form, (y - y1) = m(x - x1).

Getting the slope of the two points: (1 , 0) and (5 , 5).

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

m = (5 - 0)/(5 - 1)

m = 5/4

Using the point slope form, plug in the values of the slope and one point to set up the equation.

(y - y1) = m(x - x1)

where m = 5/4 and (x1 , y1) = (1 , 0)

(y - 0) = 5/4(x - 1)

y = 5/4(x - 1)

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Characteristics exhibited by continuously varying traits ________. group of answer choices are always autosomal never happen are always sex-linked are called quantitative traits always happen

Answers

Characteristics exhibited by continuously varying traits are called quantitative traits. These continuously varying traits always measure phenotypes which usually depend on the cumulative behavior of many genes.

What are continuously varying traits?

Continuous varying traits exhibit the characteristics whose traits do not fall in the discrete categories like height and weight. Different traits which come under continuous varying traits are anatomical traits, physiological traits, behavior traits as well as diseases. It shows the continuous phenotypic variation within the group of individuals.

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Jasmine wants to use her savings of $1,128 to buy video games and movies. The total price of the movies she bought was $72. The video games cost $43 each.
Choose the inequality that would be used to solve for the maximum number of video games Jasmine can buy with her savings.

Answers

The last one.

It states that "The video games cost $43 each." and the total price was $72 in movies meaning that the x would go with the 43 and 1,128 would have to be greater than the amount she's buying or she won't be able to buy it.

What is 5.9 × 103 in standard form?

Answers

Answer: 607 7
                       _
                       10

Step-by-step explanation:

5.9 x 10^-3

The exponent is 3, making it 10 to the power of 3. As the exponent is positive, the solution is a number greater than the origin or base number. To find our answer, we move the decimal to the right 3 times.

5.9->5900
Final results = 5900


The expression 16t² models the distance in feet that an object falls during the first t seconds after being dropped. What is the distance the object falls during each time?
0.5 second

Answers

If the expression 16t² models the distance in feet that an object falls during the first t seconds after being dropped, then the distance of the object during 0.5 second is 4 feet

Given,

The expression model of the distance in feet that an object falls during the first t second after being dropped = [tex]16t^{2}[/tex]

Time = 0.5 second

Then the distance = [tex]16(0.5)^{2}[/tex]

=16×0.25

=4 feet

Hence, if the expression 16t² models the distance in feet that an object falls during the first t seconds after being dropped, then the distance of the object during 0.5 second is 4 feet.

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The arithmetic mean of the monthly salaries of two employees is $ 3210 . One employee earns $ 3470 per month. What is the monthly salary of the other employee?
b. What equation can you use to find the other monthly salary?

Answers

The arithmetic mean of the monthly salaries of two employees is $ 3210 . One employee earns $ 3470 per month. What is the monthly salary of the other employee.

Then $2950 is the salary of the other employee.

What is arithmetic mean?

$2950 is the monthly salary of the other employee.

a. the given information = mean of two salaries =  3210

                                       = salary of 1st employee =3470

the unknown information = salary of 2nd employee = 2950

The arithmetic mean is the most straightforward and widely used method of calculating a mean or average. It only requires adding up a group of figures, then dividing the result by the entire amount of figures in the series. Consider the numbers 34, 44, 56, and 78 as an example. It totals 212.

The mean or arithmetic average are other names for the arithmetic mean. It is determined by adding up each number in a particular data set, then dividing the result by the overall number of items in the data set. For uniformly distributed integers, the middle number serves as the arithmetic mean (AM).

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The Equation a = 1/2(8)h Represents the area a of a triangle with base of 8cm and a height of h cm. Make a table to find the areas of triangles with heights of 6 cm, 7cm, 8 cm, and 9 cm.

Answers

::::: Answer ::::::::::::::::::::::

Simplifying the Equation :

[tex]a = \frac{1}{2} \times 8 \times h[/tex]

  [tex]= \frac{8}{2} \times h[/tex]

  [tex]= 4 \times h[/tex]

  [tex]= 4 h[/tex]

Then

[tex]\text{if h = 6} \longrightarrow a=4\times 6=24[/tex]

[tex]\text{if h = 7} \longrightarrow a=4\times 7=28[/tex]

[tex]\text{if h = 8} \longrightarrow a=4\times 8=32[/tex]

[tex]\text{if h = 9} \longrightarrow a=4\times 9=36[/tex]

2. In a sale, a jacket costing $40 is reduced by 20%. What is the sale price?​

Answers

Answer:

$32

Step-by-step explanation:

1.20÷100×40=8

2.$40-$8=$32

4. There is one male snake, and the rest are female. She needs one vitamin pill for every female snake. How many vitamin pills does she need if the number of snakes is:

Answers

Answer:

Is this an incomplete question?

Step-by-step explanation:


Determine whether each set of numbers can be the measures of the sides of a triangle. If so, classify the triangle as acute, obtuse, or right. Justify your answer.
4,12,14

Answers

Yes, the given set of numbers can be the measures of the sides of a triangle. The triangle is obtuse.

By the triangle inequality theorem, the sum of the lengths of any two sides should be greater than the length of the third side.

4 + 12 > 14

12 + 14 > 4

14 + 4 > 12

Hence, these set of numbers can be the measures of the sides of a triangle.

According to the Pythagorean Inequality Theorem, a triangle whose sides measure a, b, and c where c is the largest, the triangle can be characterized as:

acute if [tex]c^{2} < a^{2} + b^{2}[/tex]

obtuse if  [tex]c^{2} > a^{2} + b^{2}[/tex]

right if  [tex]c^{2} = a^{2} + b^{2}[/tex]

The longest side is 14.

Hence, a = 4, b = 12 and c = 14;

Consider        [tex]a^{2} + b^{2}[/tex] :

[tex]= 4^{2} + 12^{2}[/tex]

= 160.

Now consider [tex]c^{2}[/tex] :

= [tex]14^{2}[/tex]

= 196.

Thus, [tex]c^{2} > a^{2} + b^{2}[/tex]

Hence, the triangle is obtuse.

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Here is three different real world examples of slope as a unit rate. Please read the graphs below and fill in the blanks for each one for slope. (PLEASE HELP!!)

Answers

10

40

15

PLEASE CORRECT ME IF I AM WRONG, AND TELL ME IF I AM RIGHT.

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