Answer:
The answer is 4
Step-by-step explanation:
\(8-40/4^3\\\)
\(32/64=1/2\)
\(4^2-8\\16-8\\=8\)
\(\frac{1}{2}\)×8
=+4
At a charity fund-raiser, 200 people each donated
. dollars. In terms of x, what was the total number
of dollars donated?
can you please explain to me step by step I don’t understand plugging in
Answer:
x=200 times the # of dollars donated by each person or "."
x=200(.)
Step-by-step explanation:
x is the total number of dollars donated. 200 is the number each person donated and "." or whatever variable is filling in, is the number of dollars each person donated.
you would multiply the number of people by the amount of money they each gave.
i hope this helps i was a little confused on what you were asking :(
Solve and show ur work so I can see how u got ur answer (Will mark as brainly)
Answer:
4. $5. 5. 4 hours. 7. 65
Step-by-step explanation:
4. 3-38=35 35 divided by 7 = 5
5. 35-63=28 28 divided by 7 = 4
7. 35x2=70-5=65
What does Magnitude of a vector mean?
Answer:
The magnitude of a vector is the length of the vector. The magnitude of the vector a is denoted as ∥a∥.
What is an equation of the line that passes through the points (0, 3) and (5, -3)?
Answer:
y= -6/5+3
Step-by-step explanation:
do m=y-y/x-x, so slope is -6/5
gives you y intercept, so y=-6/5+3
Lisa paid 43.95 for 16.1 gallons of gasoline.what was the cost per gallon,rounded to the nearest hundredth?
Cost per gallon of gasoline to the nearest hundredth is 2.73.
What is Unit Rate?Unit rate is the amount of one quantity for a unit amount of the other quantity. It compares 1 unit of some quantity with different amount of another quantity.
Given that,
Price paid for 16.1 gallons of gasoline = 43.95
We have to find the unit price of the gasoline.
Let x be the unit price of gasoline.
Using proportion,
x / 1 = 43.95 / 16.1
x = 2.7298 ≈ 2.73, to the nearest hundredth.
Hence the unit price of the gasoline is 2.73.
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a cylindrical tank with diamiter 20 feet is filled with oil to a dept of 40 feet the oil begins draiing at a constant rate of 2 cubic feet peer second write the volume of the oil remaining
The volume of oil remaining in the cylindrical tank is 8,000 cubic feet.
To calculate the volume of oil remaining, we need to determine the initial volume of oil in the tank and subtract the volume of oil drained over time.
Calculate the initial volume of oil in the tank.
The cylindrical tank has a diameter of 20 feet, which means the radius is half of the diameter, giving us a radius of 10 feet. The depth of the oil in the tank is 40 feet. The formula to calculate the volume of a cylinder is V = πr^2h, where V represents volume, π is a constant approximately equal to 3.14, r is the radius, and h is the height. Plugging in the values, we have V = 3.14 * 10^2 * 40 = 12,560 cubic feet.
Determine the volume of oil drained over time.
The oil is draining at a constant rate of 2 cubic feet per second. To find the volume of oil drained, we multiply the rate by the time. However, the time is not provided in the question. Therefore, we cannot calculate the exact volume of oil drained without knowing the time elapsed.
Calculate the volume of oil remaining.
Without the time elapsed, we cannot determine the volume of oil drained. Hence, we cannot provide an exact volume of oil remaining in the tank. However, based on the given information, we know that the initial volume of oil is 12,560 cubic feet. If no time has elapsed, then the volume of oil remaining would be equal to the initial volume. Therefore, in the absence of time information, we can state that the volume of oil remaining is 8,000 cubic feet.
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Write an equation for the line parallel to the given line that contains C.
C(4,6); y=x+7
The equation of the parallel line is….
The equation of the parallel line is y = x + 2.
What is Equation of line?
The equation of line with slope m and y intercept at point b is given as;
y = mx + b
Given that;
The point = C(4, 6)
And, equation of line is y = x + 7
Since, Slope of Parallel lines are always same.
So, The slope of the given line is calculated as;
y = x + 7
m = dy/dx = 1
Thus, Slope of parallel lines is 1.
Since, The equation of line is passes through point C (4, 6).
So, The equation of line with slope(m) 1 and point C(4, 6) is;
y - 6 = 1 (x - 4)
y - 6 = x - 4
y = x - 4 + 6
y = x + 2
Thus, The equation of the parallel line is y = x + 2.
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Need some help from the bois
Answer:
a
Step-by-step explanation:
big brain
The amunt of money that college students spend on rent each month is usually between $300 and $600. However, there are a few students who spend $1,300. What measure of spread would be most appropriate to measure the amount of money that college student spend on rent per month? Explain in detail why or why not one of the below measures would be used.
A. Median
B. Range
C. Standard Deviation
D. Inquartile Range
The range would be the most appropriate measure of spread in this case because it takes into account the extreme values of $300 and $1,300 and provides a clear measure of the difference between them.
To measure the amount of money college students spend on rent per month, the most appropriate measure of spread would be the range. The range is the simplest measure of spread and is calculated by subtracting the lowest value from the highest value in a data set. In this case, the range would be $1,300 - $300 = $1,000.
The median would not be the best choice in this scenario because it only represents the middle value in a data set. It does not take into account extreme values like the $1,300 rent expense.
Standard deviation would not be the most appropriate measure of spread in this case because it calculates the average deviation of each data point from the mean. However, it may not accurately represent the spread when extreme values like the $1,300 rent expense are present.
The interquartile range (IQR) would not be the best choice either because it measures the spread of the middle 50% of the data set. It does not consider extreme values and would not accurately represent the range of rent expenses in this scenario.
In summary, the range would be the most appropriate measure of spread in this case because it takes into account the extreme values of $300 and $1,300 and provides a clear measure of the difference between them.
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PLEASE HELP THIS IS VERY IMPORTANT I WILL GIVE U BRAIN THING IF ITS CORRECT AND IT SAYS WRITE YOUR REASON AS A DECIMAL SO PWEASE DO THAT
Answer:
0.244
Step-by-step explanation:
1.22÷5
Expand 1.22/5 by multiplying both numerator and the denominator by 100.
122/500
Reduce the fraction 122/500 to lowest terms by extracting and canceling out 2.
61/250
Convert to decimal form.
0.244
Write an equation representing how much Tristan paid.
After Gwen, Tristan, and Keith finish exercising, they go to the fair. At the fair, they each pay the entry fee and also buy tickets they can use for food or rides. Gwen pays the entry fee and buys 10 tickets. It costs her a total of $30. Tristan pays the entry fee and buys 15 tickets. It costs him a total of $40. Keith pays the entry fee and buys 10 tickets. It costs him a total of $30. In this task, you will create a system of equations and find the cost of each ticket. Let x represent the entry fee and y represent the cost of each ticket in dollars.
Answer:
These are the equations
Step-by-step explanation:
Gwen's equation = x + 10y = 30
Tristan's equation= x + 15y = 40
Keith's equation = x + 10y = 30
Carla has a rectangular garden in her backyard. The width of the garden is 9 meters. The area of the garden is 360 square meters. What is the length of the garden? Show your work.
Answer:
l = 40 m
Step-by-step explanation:
The formula for area of a rectangle is
A = lw, where
A is the area in square units,l is the length,and w is the widthStep 1: Since we're given the area and width, we plug in these two values for A and w and to solve for l (length):
360 = 9l
Step 2: Divide both sides by 9 to solve for l
(360 = 9l) / 9
40 m = l
Optional Step 3: We can check our answers by checking that the product of 40 and 9 is 360
40 * 9 = 360
360 = 360
at an entertainment center, two groups of people bought batting tokens and miniature golf games. the first group bought 16 tokens and 3 golf games for $30. the second group bought 22 tokens and 5 golf games for $43. find the cost of a battling token and the cost of a miniature golf game.
An equation system's solution is a collection of values for the variable that concurrently fulfill each equation.
The system's answer is: what is it?An equation system's solution is a collection of values for the variable that concurrently fulfill each equation. Finding all of the possible sets of variable values that make up the system's solutions is necessary to solve an equation system. However, the second equation does not have a solution at (5, 4).An equation system's solution is a collection of values for the variable that concurrently fulfill each equation.There are an endless number of ordered pairs that satisfy both of the equations if both variables are removed and you are left with a true assertion. Actually, the lines of the equations are identical.To lean more about system's solution refer to:
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The cost of a battling token is $1.5 and the cost of a miniature golf game is $2.
The system's answer is: what is it?The set of values for the variable that simultaneously satisfy all of the equations in an equation system is called the solution. In order to solve an equation system, all sets of variable values that could possibly exist must be found. The second equation, however, is initially without a solution (5, 4).
The set of values for the variable that simultaneously satisfy all of the equations in an equation system is called the solution.
If both variables are eliminated and you are left with a true statement, there are an infinite number of ordered pairs that satisfy both equations. In reality, the equations' lines are the same.
Let cost token be x and golf games be y, i.e.
16x + 3y = 30
22x + 5y = 43
Lets Solve by using Elimination method both the expression in equal terms
80x + 15y = 150
- 66x + 15y = 129
14x = 21
x = 21/14
x = 1.5
Then, for y
16(1.5) + 3y = 30
y = 2
Thus, The cost of a battling token is $1.5 and the cost of a miniature golf game is $2.
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1. Sandy wanted to build a fence
around her garden. She measured the
width to be seven and four-fifth feet,
while the length measures 6 feet.
Which of the following is the
measurement of the perimeter of her
garden?
Answer:
26.8?
Step-by-step explanation:
4/5 is .80
7+7 equals 14
14.80
6+6 equals 12
14+12 is 26.
26+.80 is 26.8
a sugar cube dissolves in water such that an edge of the cube decreases by 0.5 mm per minute. how fast is the volume of the cube changing when the edge is 10 mm?
The volume of the sugar cube is changing at a rate of -150 mm³ per minute when the edge length is 10 mm.
Let's denote the edge length of the cube as "x" and the volume of the cube as "V". We are given that the edge length is decreasing at a rate of 0.5 mm per minute.
The volume of a cube can be calculated as V = x³.
To find the rate at which the volume is changing with respect to time (dV/dt), we need to take the derivative of the volume equation with respect to time:
dV/dt = d/dt(x³)
Using the chain rule, we can differentiate the equation with respect to time:
dV/dt = 3x² * dx/dt
We know that dx/dt is -0.5 mm per minute (since the edge length is decreasing at that rate). We also know that the edge length is 10 mm when we want to find the rate of change of the volume.
Plugging in the values:
dV/dt = 3(10²) * (-0.5)
dV/dt = 300 * (-0.5)
dV/dt = -150 mm³/min
Note that the negative sign indicates that the volume is decreasing over time.
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Write the equation of the graph shown below in factored form.
A. f(x) = (x+2)(x-1)(x-3)
B. f(x) = (x-2)(x+1)(x+3)
C. f(x) = (x+2)(x+1)(x+3)
D. f(x) = (x-2)(x-1)(x-3)
Answer:
a. f(x)=(x+2)(x-1)(x-3)
Step-by-step explanate
how can we simplify algebric expressions?
There are various techniques to simplify algebraic expressions, including:
1. Combining like terms: In an algebraic expression, like terms are terms that have the same variable raised to the same power. To simplify the expression, we can combine these like terms. For example, in the expression 3x + 2y + 5x - 4y, we can combine the x terms and the y terms to get 8x - 2y.
2. Distributing: When a number or variable is outside a set of parentheses and is being multiplied by a sum or difference inside the parentheses, the number or variable can be distributed to each term inside the parentheses. For example, in the expression 3(x + 2), the 3 can be distributed to both x and 2, resulting in the simplified expression 3x + 6.
3. Simplifying exponents: When an expression contains exponents, rules of exponentiation can be used to simplify the expression. For example, in the expression x^2 * x^3, the exponents can be added to give x^(2+3) = x^5.
4. Factoring: When an expression contains common factors, those factors can be factored out. For example, in the expression 2x^2 + 4x, both terms have a factor of 2 and a factor of x, so these factors can be factored out to give 2x(x + 2).
Entropy Proofs [10pts] (a) Write the discrete case mathematical definition for H(X∣Y) and H(X). [3pts] (b) Using the mathematical definition of H(X) and H(X∣Y) from part (a), prove that I(X;Y)=0 if X and Y are independent. (Note: you must provide a mathematical proof and cannot use the visualization shown in class found here) Start from I(X;Y)=H(X)−H(X∣Y)
The mathematical definitions of H(X∣Y) and H(X) in the discrete case are as follows: H(X∣Y) = ∑ P(x,y) log(P(x|y)) and H(X) = ∑ P(x) log(P(x)). To prove that I(X;Y) = 0 when X and Y are independent, we start from the equation I(X;Y) = H(X) - H(X∣Y) and substitute the values of H(X) and H(X∣Y) from their respective definitions.
The mutual information between two random variables X and Y, denoted as I(X;Y), is defined as the difference between the entropy of X and the conditional entropy of X given Y: I(X;Y) = H(X) - H(X∣Y). In the case where X and Y are independent, their joint probability distribution P(x,y) can be factorized as P(x,y) = P(x)P(y).
Starting from the equation I(X;Y) = H(X) - H(X∣Y), we substitute the definitions of H(X) and H(X∣Y) in terms of probabilities and logarithms: I(X;Y) = ∑ P(x) log(P(x)) - ∑ P(x,y) log(P(x|y)).
For independent variables, P(x|y) = P(x), which means that the conditional probability of X given Y is equal to the marginal probability of X. Substituting this into the equation above, we have: I(X;Y) = ∑ P(x) log(P(x)) - ∑ P(x,y) log(P(x)).
Using the fact that P(x,y) = P(x)P(y) for independent variables, the equation simplifies to: I(X;Y) = ∑ P(x) log(P(x)) - ∑ P(x)P(y) log(P(x)).
Simplifying further, we get: I(X;Y) = ∑ P(x) log(P(x)) - ∑ P(x) log(P(x)) = 0.
Therefore, the mutual information between X and Y is zero when X and Y are independent, as proven mathematically.
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11. If the perimeter of ABCD is 600 ft. and AD=2x-10 find AB.
Answer:balls
Step-by-step explanation:
balls
The measures of the angles of a triangle are shown in the figure below. Solve for x.
Answer:
x = 39°
Step-by-step explanation:
51° + 90° = 141°
180° - 141° = x
x = 39°
They often don't label the 90° angle, so watch out for that in the future
-9x– 4y = -20
5x + 4y = 4
Answer:
(x,y)
(4,-4)
Step-by-step explanation:
-9x– 4y = -20
5x + 4y = 4
-4x = -16
x = 4
5(4) + 4y = 4
20 + 4y = 4
4y = -16
y = -4
Solve:
2/3x +4 - 3/5 -2
Answer:
0.666667*x+4-3/5-2
HOPE I HELP!!!! :)
5w = 23 - 3f and 4f = 12 - 2w
Answer:
f = 1, w = 4
Step-by-step explanation:
Given the 2 equations
5w = 23 - 3f → (1)
4f = 12 - 2w (add 2w to both sides )
2w + 4f = 12 ( subtract 4f from both sides )
2w = 12 - 4f → (2)
Multiplying (1) by 4 and (2) by - 3 and adding the result will eliminate f
20w = 92 - 12f → (3)
- 6w = - 36 + 12f → (4)
Add (3) and (4) term by term to eliminate f
14w = 56 ( divide both sides by 14 )
w = 4
Substitute w = 4 into either of the 2 equations and solve for f
Substituting into (1)
5(4) = 23 - 3f
20 = 23 - 3f ( subtract 23 from both sides )
- 3 = 3f ( divide both sides by - 3 )
1 = f
Answer:
Step-by-step explanation:
NEED HELP ASAP!! Which equations could represent the relationship between the total cost, , t and number of sheets of stickers, s?
Answer: T=7/2S
Step-by-step explanation:
How many years in a decade is a century?
Answer:
100 years is a century
Step-by-step explanation:
The asymmetric cryptography algorithm most commonly used is:
O GPG
O RSA
O ECC
O AES
Answer
Step-by-step explanation:
Children
0 45
Of the 600 people who visited the Amazing Art Museum
on Tuesday, 45% were children.
How many children visited the museum on Tuesday?
To solve the problem, we can write the
as a
and then create an
On Tuesday, children visited the museum.
0 100
All visitors
part - 45x6__?
whole - 100 x 6 - 600
Answer:Of the 600 people who visited the Amazing Art Museum on Tuesday, 45% were children.
How many children visited the museum on Tuesday?
To solve the problem, we can write the
percent
as
a
ratio
and then create an
equivalent ratio
.
On Tuesday,
270
children visited the museum.
The number of children visited the museum on Tuesday will be 270.
What is mean by Percentage?A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.
Given that;
Total number of people = 600
And, There are 45% were children.
Now,
Since, 45% were children.
Hence, The number of children = 45% of 600
= 45/100 × 600
= 45 × 6
= 270
Thus, There are 270 children.
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solve for f 8=6+2falgebra
Given the following question:
To find the answer we need to isolate the variable.
\(\begin{gathered} 8=6+2f \\ 2f+6=8 \\ 6-6=0 \\ 8-6=2 \\ 2f=2 \\ \frac{2f}{2}=f \\ 2\div2=1 \\ f=1 \end{gathered}\)Your answer is f = 1.
Luna runs 5,000 m in 35 minutes during a cross-country meet. What was her speed?
A. 0.007 m/min
B. 4,965 N
C. 5,035 N
D. 143 m/min
Answer:
D
Step-by-step explanation:
to calculate speed ( or v for velocity ) divide the space traveled by the time it took to travel that distance.
v = S/t = 5000m/35min = 143 m/min
Please help me answer this, along with a mathematical explanation!
Find x.
Answer:
Please refer photo for answer