Answer: Let's call the total number of coins Karen and Bill have "t".
We can start by writing an expression for the number of coins Bill has:
2x - 9 = 9 + 2x
So the total number of coins Karen and Bill have is:
t = x + (2x - 9)
Simplifying the expression for t:
t = 3x - 9
So the total number of coins Karen and Bill have is equal to 3 times the number of coins Karen has minus 9.
Step-by-step explanation:
Money in a particular savings account increases by about 6% after a year. How much money will be in the account after one year if the initial amount is $100? $50? $200? $125? dollars? If you get stuck, consider using diagrams or a table to organize your work.
106$ money will be in the account after one year if the initial amount is $100.
What is compound interest?The interest earned on savings that are computed using both the original principal and the interest accrued over time is known as compound interest. A = P(1 + r/n)^nt, where P is the principal balance, r is the interest rate, n is the number of times interest is compounded annually, and t is the number of years, which is the formula for compound interest.
we have
Money in particular savings accounts increases by about 6% after a year.
we know that
The simple interest formula is equal to
A = P(1 +rt)
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest
t is the Number of Time Periods
Part 1) How much money will be in the account after one year if the initial amount is $100
in this problem we have
P = 100
r =6%
t = 1 year
substitute in the formula above
A = 100(1 +0.06)
A = 106$
Part 2) How much money will be in the account after one year if the initial amount is $50
in this problem we have
P = 100
r =6%
t = 1 year
substitute in the formula above
A = 50(1 +0.06)
A = 53$
Part 3) How much money will be in the account after one year if the initial amount is $200
in this problem we have
P = 100
r =6%
t = 1 year
substitute in the formula above
A = 200(1 +0.06)
A = 212$
Part 4) How much money will be in the account after one year if the initial amount is $125
in this problem we have
P = 100
r =6%
t = 1 year
substitute in the formula above
A = 125(1 +0.06)
A = 132.5$
Part 5) How much money will be in the account after one year if the initial amount is $x
in this problem we have
P = 100
r =6%
t = x year
substitute in the formula above
A = 100(1 + 0.06x)
A = 6x +100
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What is Van t Hoff law explain?
Van 't Hoff's law, also known as the law of osmotic pressure, states that the magnitude of the osmotic pressure is directly proportional to the concentration of solute particles in a solution at a given temperature.
Van 't Hoff's law is an important concept in chemistry and thermodynamics. It explains the relationship between osmotic pressure and the concentration of solute particles in a solution. According to the law, the osmotic pressure of a solution is directly proportional to the number of solute particles in the solution, regardless of the type of solute. This means that if the concentration of solute particles in a solution increases, the osmotic pressure also increases, and vice versa. This law has numerous applications, particularly in the field of biology, where it is used to explain the movement of water and nutrients in and out of cells. For example, when a plant cell is placed in a hypertonic solution, water moves out of the cell, causing it to shrink. On the other hand, when a plant cell is placed in a hypotonic solution, water moves into the cell, causing it to expand. Understanding Van 't Hoff's law is therefore critical in many fields of science, particularly in biology, chemistry, and chemical engineering.
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14. The total cost of three automobile batteries is $340.
The most expensive battery is three times the cost of
the least expensive. The third is $15 more than the leastexpensive. Find the cost of each battery.
The cost of each battery would be Battery 1 = $195, Battery 2 = $80 and Battery 3 = $65.
How to calculate the cost of each battery?Battery 1 (most expensive).= 3(X)
Battery 2 ( third battery) = 15+ X
Battery 3 (least expensive) = X
The total cost of the whole battery = $340
That is;
$340 = 3x + 15+ X + X
340 = 5x + 15
5x = 340 - 15
5x = 325
X = 325/5
X = $65
Therefore the cost of each battery;
Battery 1 = 3× 65 = $195
Battery 2 = 15 + 65 = $80
Battery 3 = $65
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What is 80kmh to mph ?
The conversion factor between kilometers per hour and miles per hour is 1.609344. Therefore, to convert from kmh to mph, we need to divide the speed in kmh by this conversion factor. 80kmh is equivalent to approximately 49.71 mph.
To find the speed in mph, we can use the following formula:
mph = kmh / 1.609344
Plugging in the given speed of 80kmh, we get:
mph = 80kmh / 1.609344
mph = 49.70969538
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Six pizzas were shared among 8 groups of children. Each child got 3/8 of a pizza. How many children were there in the group?.
There are 24 children in the group.
To divide something into equal groups or to determine how many equal groups there are, use the division procedure. When equal groups are combined to find a total in multiplication, division is the opposite process.
If 6 pizzas were shared among 8 groups of children, each group would receive 6/8 = 3/4 of a pizza.
If each child got 3/8 of a pizza, then in a group of children each group would have 8 * 3/8 = 3 children.
Therefore, in total, there were 8 * 3 = 24 children.
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Find the area of a triangle with a height of 5x7y2 and a base of 4x3y
The area of the triangle is A = 10x¹⁰y³
What is a Triangle?A triangle is a plane figure or polygon with three sides and three angles.
A Triangle has three vertices and the sum of the interior angles add up to 180°
Let the Triangle be ΔABC , such that
∠A + ∠B + ∠C = 180°
The area of the triangle = ( 1/2 ) x Length x Base
For a right angle triangle
From the Pythagoras Theorem , The hypotenuse² = base² + height²
if a² + b² = c² , it is a right triangle
if a² + b² < c² , it is an obtuse triangle
if a² + b² > c² , it is an acute triangle
Given data ,
Let the triangle be represented as ΔABC
Let the area of the triangle be represented as A
Now , the base of the triangle is = 4x³y
Let the height of the triangle be = 5x⁷y²
And , The area of the triangle = ( 1/2 ) x Length x Base
Substituting the values in the equation , we get
Area of Triangle = ( 1/2 ) ( 4x³y ) ( 5x⁷y² )
On simplifying the equation , we get
Area of Triangle A = 10x¹⁰y³
Hence , the area of the triangle is A = 10x¹⁰y³
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HELP NEEDED!! need this solved
Help please I’m stuck on a question and I’d greatly appreciate it
The value of the missing part of triangle DFC which is FD would be = 12.
How to calculate the missing part of the triangle?Triangle ACD is congruent to triangle DFC
ED/AD = BC/AC
where;
ED = 9
AD = 15
BC= 12
AC=?
Make AC the subject of formula;
AC= 12×15/9
AC= 180/9
AC = 20
Using the adjacent values of the new and original sides of the triangle to calculate the scale factor.
That is ;
AD is congruent to FC = 15 = 9
But Scale factor = Dimension of the new shape ÷ Dimension of the original shape
Scale factor = 15/9= 1.67
To calculate FD using the scale factor;
1.67= 20/FD
FD= 20/1.67
FD= 12 (approximately)
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By proportion formulas and Pythagorean theorem, the length of side FD is approximately equal to 26.571.
How to determine the lengths of missing sides in a geometric system
Herein we find a geometric system formed by two similar right triangles (ΔABE, ΔACD) and a third distinct right triangle (ΔCDF). Two triangles are similar when both have congruent interior angles and sides that are not congruent though proportional.
Then, the system of similar triangles can be defined by following proportion formula:
AB / AE = AC / AD
x / 6 = (x + 12) / 15
15 · x = 6 · (x + 12)
15 · x = 6 · x + 72
9 · x = 72
x = 8
AB = 8
Now we determine the length of side CD by Pythagorean theorem:
CD = √(AC² - AD²)
CD = √[(x + 12)² + 15²]
CD = √(20² + 15²)
CD = 25
And the side FD is finally found by Pythagorean theorem:
FD = √(CD² + CF²)
FD = √(25² + 9²)
FD = √706
FD ≈ 26.571
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What is Prim's algorithm for minimum spanning tree visualization?
Answer:
Step-by-step explanation:
Prim's algorithm is a greedy algorithm used to find the minimum spanning tree (MST) of a connected, undirected graph. It works by growing the tree one vertex at a time, always adding the vertex with the lowest weight edge that connects it to the growing tree. The algorithm starts with an arbitrary vertex, adds it to the tree, and then repeats the following steps until all vertices are in the tree:
Find the vertex that is not in the tree but has the minimum weight edge connecting it to the tree.
Add the vertex to the tree and mark it as visited.
Update the minimum weight edges connecting the vertices that are not yet in the tree to the growing tree.
This process continues until all vertices are in the tree, and the final result is the minimum spanning tree. The visualization of Prim's algorithm for minimum spanning tree can be represented graphically by showing the growth of the tree one vertex at a time, and highlighting the edges that are added to the tree in each step. The animation can be used to show how the algorithm is making decisions based on the weights of the edges and how it is gradually building the minimum spanning tree.
10 pnt sooo come help me please 2+(-2)
Morning Donuts has a variety of donuts for sale.
maple donuts
cake donuts
14
15
cream-filled donuts
9
chocolate frosted donuts 11
What is the probability that a randomly selected donut will be a maple donut?
Write your answer as a fraction or whole number.
P(maple donut)
=
Answer:
here are a total of 14 + 15 + 9 + 11 = 49 donuts.
The probability of selecting a maple donut is the number of maple donuts divided by the total number of donuts:
P(maple donut) = 14/49
So the probability of selecting a maple donut is 14/49, which can also be written as a fraction in simplest form: 2/7.
PRECALCULUS PLEASE HELP
Using the law of tangents, the angle of the person’s eyes to the top of the building is approximately 36.87 degrees.
What is angles?Angle isc figure that can be described as the amount of rotation between two straight line not planes and angles is measured in degree with the full circle being 360°.
This can be calculated by setting up the following equation:
tan(angle) = 80 ft / (200 ft - 4 ft)
Solving for the angle, we get:
angle = tan-1(80 ft / 196 ft)
angle = tan-1(0.408163265)
angle = 36.87 degrees (to the nearest hundredth of a degree).
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Find the probability that the country is in the south asia region, given that shreya categorized the country's business startup costs as high.
The probability that the country is in the south Asia region is 7/87
The probability is a mathematical concept that tells us how likely an event is to occur.
The probability that a country is in South Asia given that it has high business startup costs is represented as P(A|B). This is calculated as follows:
P(A|B) = P(A and B) / P(B)
Where P(B) is the probability that a country has high business startup costs and can be calculated as:
P(B) = B / Total number of countries
And P(A and B) is the probability that a country is in South Asia and has high business startup costs, which can be calculated as:
P(A and B) = A / Total number of countries
So, substituting the values, total high startup cost is 87 and and, South Asia start up cost is 7, Then, the probability that the country is in the south Asia region is
=> 7/87
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Isaac was comparing the price of pineapple juice at two stores. Isaac can buy 3 bottles
of pineapple juice at Store A for a total cost of $7.32. The graph below represents
what Isaac would pay in dollars and cents, y, for z bottles of pineapple juice at store
B.
How much more is a bottle of pineapple juice at Store A than
at Store B?
The cost of each pineapple juice bottle at Store A is $0.90 more than at Store B.
What is the rate?The rate is the ratio of the amount of something to the unit. For example - If the speed of the car is 20 km/h it means the car travels 20 km in one hour.
The rate of the pineapple juice bottle at store A is given as,
Rate = $7.32 / 3
Rate = $2.44 per bottle
From the graph, the two points are (10, $15.40) and (20, $30.80). Then the rate is given as,
Rate = ($30.80 - $15.40) / (20 - 10)
Rate = $1.54
The difference between the rates is given as,
⇒ $2.44 - $1.54
⇒ $0.90
The cost of each pineapple juice bottle at Store A is $0.90 more than at Store B.
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The complete question is attached below.
The area of a rectangle is 294 in². The ratio of the length to the width is 3:2. Find the length and the width.
Answer:
length = 21 in , width = 14 in
Step-by-step explanation:
the ratio of length : width = 3 : 2 = 3x : 2x ( x is a multiplier )
the area (A) of a rectangle is calculated as
A = length × width
given A = 194 , then
3x × 2x = 194
6x² = 194 ( divide both sides by 6 )
x² = 49 ( take square root of both sides )
x = [tex]\sqrt{49}[/tex] = 7
then
length = 3x = 3 × 7 = 21 in
width = 2x = 2 × 7 = 14 in
The answer needs to be a mixed number, please help me with this.
The perimeter of the given triangle in mixed fraction form is 4 1/2 ft.
What is triangle?A triangle is a closed, 2-dimensional shape with three straight sides and three angles. The sum of the interior angles of a triangle is always 180 degrees. There are many types of triangles, including equilateral triangles (all sides and angles are equal), isosceles triangles (two sides and two angles are equal), scalene triangles (no sides or angles are equal), right triangles (one angle is a right angle, or 90), and obtuse triangles (one angle is greater than 90). Triangles are used in many areas of mathematics, science, and engineering.
Here,
The perimeter of the triangle:
=2 1/8+5/6+1 3/4
First, we need to convert all the mixed numbers into improper fractions:
2 1/8 = 17/8
5/6 = 10/16 = 15/24
1 3/4 = 7/4
Now we can add the three fractions:
17/8 + 15/24 + 7/4
To add these fractions, we need to find a common denominator. The smallest number that all three denominators divide into is 24. So we can rewrite the fractions with 24 as the denominator:
17/8 = 51/24
15/24 (already in the correct form)
7/4 = 42/24
Now we can add the numerators:
51/24 + 15/24 + 42/24 = 108/24
We can simplify this fraction by dividing both the numerator and denominator by their greatest common factor, which is 12:
108/24 = (9 × 12)/(2 × 2 × 2 × 3) = 9/2
=4 1/2 ft
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The _______ of a probability experiment is the collection of all possible outcomes. a. outcome b. sample space c. event d. unusual event e. experiment
Answer:B.Sample space
Step-by-step explanation:
a line segment is a part of a line that is bounded by two distinct end points and contains every point on the line between its endpoints. True/False?
The statement "a line segment is a part of a line that is bounded by two distinct end points and contains every point on the line between its endpoints." is True because a line segment is defined as a part of a line that is bounded by two distinct end points and contains all the points on the line between those endpoints.
A line segment is a part of a line that has two endpoints and connects them. It is the shortest distance between two points and has a definite length, but no width or height. A line segment can be part of a straight line or a curved line.
A line segment is a section of a line that is defined by two distinct end points and includes every point on the line between them. It is the basic building block of geometry and can be used to measure distances, angles, and shapes.
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Find the sum. use your answer in the simplest terms, using the slash ( / ) as the fraction bar.
1/4 + 1/7
Answer:11/28
Step-by-step explanation:
we should find Lowest common denominator which is 4*7=28
1/4+1/7=4+7/4*7
Answer: 11/28.
Step-by-step explanation: Add 1/4 to 1/7.
1/4 + 1/7 = 11/28
ASAP 25 POINTS gordanden Greenthumbs likes to grow huge plants. He once grew a zucchini that started out at 6 inches, then grew & inches to re 15 inches on the second day. Each day the zucchini grew by the same amount as the day before plus another 3 inches. On which day would the zucchini be longer than 11 fest? Show all worke
The Zucchini will be longer than 11 feet on the ninth day.
How did the plant grow?Since 12 inches is equal to 1 foot, then 11 feet will be equal to 132 inches. Below, we are going to describe the rate of the plant's growth from day 1.
Day 1 = 6 inches
Day 2 = 6 + 9 inches = 15 inches
Day 3 = 15 + 9 + 3 = 27 inches
Day 4 = 27 + 12 + 3 = 42
Day 5 = 42 +15 + 3 = 60
Day 6 = 60 + 18 + 3 = 81
Day 7 = 81 + 21 + 3 = 105
Day 8 = 105 + 24 + 3 = 132
Day 9 = 132 + 27 + 3 = 162
We are told that on the second day, the tree grew up to 15 inches and subsequently, it grew by the same amount as the day before plus another three inches.
Going by that calculation, on the third day, the tree will grow by 9 inches plus three more inches and this continues. Finally, on the ninth day, the tree would have grown up to 162 inches which is greater than 132 inches or 11 feet.
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8 divided by 8,521.2
Answer: 8521.8 ÷ 8 = 1065.225
Step-by-step explanation: This is extremely simple all you require is a calculator with which you can plug in the variables
What is 13.5 rounded to the nearest whole
number?
The nearest whole number after rounding is, 14
What is Rounding of a number ?Rounding a number to the nearest tenth means finding the nearest multiple of 0.1.
To do this, you need to look at the digit in the hundredths place (the second digit after the decimal point) of the number you want to round.
If that digit is 5 or greater, you round the number up by adding 0.1 to the nearest whole number.
If that digit is 4 or less, you round the number down by leaving the nearest whole number unchanged.
For example, rounding 3.456 to the nearest tenth gives 3.5, while rounding 3.444 to the nearest tenth gives 3.4.
Given that,
The decimal number 13.5,
after using rules of rounding,
it can be rounded as 14
Hence, the nearest whole number is 14
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solve for x
x+8
4x+7
pls help me my homework is due tmrw and me and my mom are stumped.
Answer:
Step-by-step explanation:
A refrigerator is a cuboid, so W=3ft, L= 2.5ft, and H=6ft,
the volume of the refrigerator =W x L x H=3x2.5x6=45ft^3
The walls and other parts have 20ft^3 volume, so we have to minus them, so
volume left for food =45-20=25ft^3
Answer:
Step-by-step explanation:
Volume of the fridge = 3 × 2.5 × 6 = 45 ft³
then subtract the 20 ft³
45 - 20 = 25 ft³
What is the area of the mat if it is 184 in please explain.
The dimensions of the original mat are 27 inches by 21 inches.
What is Rectangle :A closed figure bounded by four sides in which opposite sides are equal is known as rectangle.
The area of rectangle is calculated by the given formula,
A = length x breadth
Length and width of the rectangle can be found from the following expression after solving for x. The expression is given by :
outside area - inside area = 184 square inches
{(2·x - 3)·(x + 8)} - {(2·x - 7)·(x + 4)} = 184 (On substitute length and width expressions. Each area is the product of length and width.)
⇒{( 2·x² + 16·x - 3x - 24)} - {(2·x² + 8x -7x -28) }= 184
⇒(2·x² + 13x - 24) - ( 2·x² + x -28) = 184
⇒ 12·x + 4 = 184 .................(On simplifying the expression)
⇒ 12·x = 180
⇒ x = 15
Then the original length of the mat is given by substituting value of x in outside length expression :
2·x - 3 = 2·15 - 3 = 30 - 3 = 27 inches
and the original width of the mat is given by :
x + 6 = 15 + 6 = 21 inches
Hence, the overall dimensions of the original mat are 27 inches by 21 inches.
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Afunction is represented by the table. 3 CH 5-26 7 -50 The rate of change of the function represented in the table is -13 12 13 . For the given x- and y-values, the function is decreasing
The rate of change of the function represented in the table is 12 For the given x- and y-values, the function is f(x)=12x+34
What is slope intercept form of line?The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
m=26-2/5-3
=24/2
=12
Rate of change is 12.
Now let us find y intercept
26=12(5)+b
26=60+b
26-60=b
b=34
So the function is y=12x+34
Hence, the rate of change of the function represented in the table is 12 For the given x- and y-values, the function is f(x)=12x+34
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Question
A function is represented by the table. x y
3 -2
5 -26
7 -50
The rate of change of the function represented in the table is_____
. For the given x- and y-values, the function is____
Deepa is trying to find the height of a radio antenna on the roof of a local building.
She stands at a horizontal distance of 27 meters from the building. The angle of
elevation from her eyes to the roof (point A) is 35°, and the angle of elevation from
her eyes to the top of the antenna (point B) is 41°. If her eyes are 1.69 meters from
the ground, find the height of the antenna (the distance from point A to point B).
Round your answer to the nearest meter if necessary.
The height of the antenna which is the distance from point A to point B is 4.5657 m.
What is Angle of Elevation?The angle of elevation is the angle created between the line of sight and the horizontal. The angle created is an angle of elevation if the line of sight is upward from the horizontal line.
Given:
We have to find two height h and H.
So, for distance H
H/ 27= tan 41
H= 27 x 0.8693
H = 23.4711 m
Now, for distance h
h/ 27 = tan 35
h= 27 x 0.7002
h= 18.9054
So, the height of the Antenna
= 23.4711- 18.9054
= 4.5657 m
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Which of the following numbers is between 0.62 and 1.05?
Answer: D, 1.01
1.01 is in between 0.62 and 1.05
Answer: D-1.01
Step-by-step explanation:
everyone please help me show ur solutions
Step-by-step explanation:
FCP fundamental counting principle :
in total there are
3×3×2 = 18
different combinations
listing method means listing all different triplets of such outfit combinations.
white shirt = ws
red blouse = rb
floral shirt = fs
short = sh
jeans = j
jogger pants = jp
shoes = s
sandals = sa
{
(ws, sh, s),
(ws, sh, sa),
(ws, j, s),
(ws, j, sa),
(ws, jp, s),
(ws, jp, sa),
(rb, sh, s),
(rb, sh, sa),
(rb, j, s),
(rb, j, sa),
(rb, jp, s),
(rb, jp, sa),
(fs, sh, s),
(fs, sh, sa),
(fs, j, s),
(fs, j, sa),
(fs, jp, s),
(fs, jp, sa)
}
tree diagram (I cannot draw here) :
OOTD
/ | \
ws rb fs
/ | \ / | \ / | \
sh j jp sh j jp sh j jp
/ | / | / | / | / \ / | / | / | / |
s sa s sa s sa s sa s sa s sa s sa s sa s sa
as you can see, we get a expected 18 different triplets in our listed set, and we get 18 different end leaves in and therefore 3-level paths through our tree.
Pls help I don't know this answer 10 = 3(z + 1) + 1
Answer:
10 = 3(z + 1) + 1
To start off we simplify boths sides of the equation,
10=3(z+1)+1
10=(3)(z)+(3)(1)+1
10=3z+3+1
Combining like terms*
10=3z+4
Now you flip the equation:
3z+4=10
Now Subtract 4 from both sides.
3z+4−4=10−4
3z=6
Divide by 3**
Andd you gettt
z=2
Step-by-step explanation:
Hope this helps :)