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
Jim says,
"When you subtract a number from 10, the answer will always be less than 10" Is Jim correct?
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?
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?
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.
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 sectionsThe 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.
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
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.
Step-by-step explanation:
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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.
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
Answer: different and subtract go in the empty spaces
Pls pls help whoever gets it right gets a crown
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?
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
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
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
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.
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
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?
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?
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
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)
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
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.
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?
Answer: 607 7
_
10
Step-by-step explanation:
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
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?
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.
::::: 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?
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:
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
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!!)
10
40
15
PLEASE CORRECT ME IF I AM WRONG, AND TELL ME IF I AM RIGHT.