Answer:
Usando la ley de Coulomb, la fuerza eléctrica entre las cargas en el vacío se puede calcular de la siguiente manera:
F = k * q1 * q2 / r^2
Donde:
k es la constante de Coulomb (9 × 10^9 N m^2/C^2)
q1 y q2 son las magnitudes de las cargas (en C)
r es la distancia entre las cargas (en m)
F es la fuerza eléctrica resultante (en N)
Sustituyendo los valores dados:
q1 = -7 µC = -7 × 10^-6 C
q2 = 6 µC = 6 × 10^-6 C
r = 40 cm = 0.4 m
F = (9 × 10^9 N m^2/C^2) * (-7 × 10^-6 C) * (6 × 10^-6 C) / (0.4 m)^2
F = -2.1 N
Por lo tanto, la fuerza eléctrica resultante entre las cargas es de -2.1 N.
Para determinar el valor de la fuerza eléctrica si las cargas se sumergieran en agua, se puede utilizar la constante dieléctrica relativa del agua (εr = 80.1). La expresión de la fuerza eléctrica se modifica de la siguiente manera:
F = k * q1 * q2 / (εr * ε0 * r^2)
Donde:
ε0 es la permitividad del vacío (8.85 × 10^-12 F/m)
Sustituyendo los valores dados:
F = (9 × 10^9 N m^2/C^2) * (-7 × 10^-6 C) * (6 × 10^-6 C) / (80.1 * 8.85 × 10^-12 F/m * (0.4 m)^2)
F = -2.29 N
Por lo tanto, la fuerza eléctrica resultante entre las cargas sumergidas en agua sería de -2.29 N.
In the 2006 World cup, circles of cloth were used to cover the centre circle at the start of each match . The radius of a centre circle is 9.15m and 12 football pitches were used . Estimate the total area of cloth used .
Please answer with clear explaination.
The total area of clothes used is 12627m².
How to calculate the area?It is important to note that a football is in the shape of a sphere. Therefore, the area of a ball will be:
= 4πr²
In this case, the radius which is represented by r is given as 9.15m.
The area will be:
= 4πr²
= 4 × 3.142 × 9.15²
= 1052.22
Therefore, since there are 12 pitches, the area will be:
= 1052.22m² × 12
= 12627m²
Learn more about area on:
brainly.com/question/25292087
#SPJ1
The given equation is quadratic in form. Solve the following equation and give exact solutions.2e^(2x)+7e^(x)=151. The equation rewritten as a quadratic equation in standard form using u-substitution is?2. What is the exact solution?Write an exact answer in simplified form.
1) The equation rewritten as a quadratic equation in standard form using u-substitution is:
2u² + 7u - 15 = 0
2) The exact solution is:
x = 0.41
Explanations:The qiven equation is:
\(2e^{2x}+7e^x\text{ = 15}\)This can be rewritten as:
\(2(e^x)^2+7e^x\text{ - 15 = 0}\)\(\text{Let u = e}^x\)The equation rewritten as a quadratic equation in standard form becomes:
\(2u^2\text{ + 7u - 15 = 0}\)Factorize the quadratic equation above:
\(\begin{gathered} 2u^2\text{ - 3u + 10u - 15 = 0} \\ u\text{ (2u - 3) + 5(2u - 3) = 0} \\ (u\text{ + 5) (2u - 3) = 0} \\ u\text{ + 5 = 0} \\ u\text{ = -5} \\ 2u\text{ - 3 = 0} \\ 2u\text{ = 3} \\ u\text{ = }\frac{3}{2} \end{gathered}\)u = -5 or u = 3/2
\(\begin{gathered} \text{But e}^x\text{ = u} \\ e^{x\text{ }}=-5^{} \\ x\text{ = ln(-5) \lbrack{}Invalid solution\rbrack} \\ e^x\text{ = 3/2} \\ e^{x\text{ }}\text{ = 1.5} \\ x\text{ = ln(1.5)} \\ x\text{ = }0.41 \end{gathered}\)Evaluate the given algebraic expressions replacing x with -2 and y with 1
3x^2
Answer:
12
Step-by-step explanation:
3x^2
because the information provided states that x = -2, that is what we are going to replace x with.
3(-2)^2
the next step is to evaluate the power because that is next in PEMDAS.
(-2)^2 = 4
that leaves us with:
3 * 4 = 12 ( the " * " represents the multiplication sign)
hope this helps!
This is a picture of a cube and the net for the cube.
What is the surface area of the cube?
Responses
30 cm²
30 cm²
70 cm²
70 cm²
125 cm²
125 cm²
150 cm²
150 cm²
A cube and a net of the cube are shown. The edge length of the cube is labeled 5 centimeters. The net consists of 4 squares connected vertically, and 1 square is attached to the left of the third square and 1 square is attached to the right of the third square. One square in the net is labeled with a side labeled 5 centimeters.
The surface area of the cube is 1536 ft².
We have,
The cube can be seen as 6 square areas in the net.
So,
The surface area of the cube.
= 6 x area of one square surface.
Now,
Side = 16 ft
Area of one square surface.
= side²
= 16²
= 256 ft²
Now,
The surface area of the cube.
= 6 x area of one square surface.
= 6 x 256
= 1536 ft²
Thus,
The surface area of the cube is 1536 ft².
Learn more about cubes here:
https://brainly.com/question/11168779
#SPJ1
You can buy a car for $5995.67 cash or pay $759.00 as a down payment and $129.95 a month for 4 years.
How much more does the installment plan cost than paying cash?
A. $1000.93
B. $241.93
C. $507.43
D. $2475.27
E. $99.27
well, if you had the cash right now, you can put it down cold for 5995.67 bucks
OR
put as a downpayment now 759 and then over 48 months pay 129.95 each month, well, 129.95 48 times is 129.95 * 48 = 6237.6, now let's add the 759 down and that's 6237.6 + 759 = 6996.6.
well, heck if you had the cash it'd be 5995.67, if you don't is 6996.6, their difference is 6996.6 - 5995.67 = 1000.93.
Which statements are true? Check all that apply.
On a coordinate plane, point A is (2, 3), point B is (3, 2), point C is (negative 2, 2), point D is (negative 3, negative 3), point E is (0, 3), point F is (2, 0), and point G is (0, 0).
A is in Quadrant I.
B is on the x-axis.
C is in Quadrant I.
D is in Quadrant III.
E is on the x-axis.
F is on the x-axis.
G is on the y-axis. Please anwser quick!!!!
Given:
A(2, 3)B(3, 2)C(-2, 2)D(-3, -3)E(0, 3)F(2, 0)G(0, 0)Let's first understand the different signs and different quadrants.
Quadrant I: (+, +)Quadrant ll: (-, +)Quadrant III: (-, -)Quadrant IIII: (+, -)Verifying them with the given points,
A is in Quadrant I. - TRUEB is on the x-axis. - FALSEC is in Quadrant I. - FALSED is in Quadrant III. - TRUEE is on the x-axis. - FALSEF is on the x-axis. - TRUEG is on the y-axis. - FALSEHope it helps. :)
Answer:
A D F
Step-by-step explanation:
All credit to him
Ms. Sublett's math class is putting three
numbers (0.3, 1/4, and 20%) in order from least
to greatest. Which answer is correct?
1. 1/4, 20%,
0.3
2. 20%, 1/4,
0.3
3. 0.3, 1/4,
20%
4. 0.3, 20%,
1/4

Show the solution and answer
(3x + 5)(x - 9)
the mean, the median, and the are basic statistical measures that determine characteristics of a given group of numbers.
Answer:
middle set of data
Step-by-step explanation:
a=4
2a-5
HELP ME WITH THIS QUESTION PLEASE
Answer:
3
Step-by-step explanation:
plug in 4 for a to get
2(4)-5
then multiply
8-5
u get 3
Robert's book bag is weighing him down. His bag alone weighs 4 pounds. His library book
weighs 2 pounds. The math book is 4 times the weight of the library book, and his science
book is 2 times the weight of the math book. How much does his book bag weigh with all
these books? What is the heaviest book in his book bag?
Answer:
1) 30 pounds is the weight of the bag all together
2) science book is the heaviest book
Step-by-step explanation:
bag=4 pounds
library book=2 pounds
maths book=2×4=8 pounds
science book=8×2=16 pounds
4+2+8+16=30 pounds all together
heaviest book= science book (16 pounds)
PLEASE HELP
Solve the following system algebraically. y = x^2 + 11 and y = –12x
Answer:
x^2+12x=-11
Step-by-step explanation:
Answer:
(-1, 12) and (-11, 132)
Step-by-step explanation:
Use this table to answer the question. Round to the nearest percent.
Car Plane Train Total
Green 120 250 500 870
Blue 150 350 750 1250
Yellow 170 200 450 820
Red 200 300 300 800
Brown 220 450 320 990
Total 860 1550 2320 4730
What percent of Planes are Green?
There are 29% of the Planes are Green.
What is the percentage?The percentage is defined as a ratio expressed as a fraction of 100.
Total number of green planes = 250
The total number of green vehicles = 870
The percent of green planes = (number of green planes/number of total green vehicles) x 100
The percent of green planes = (250/870) x 100
The percent of green planes = 0.2873 x 100
The percent of green planes = 28.73
Round to the nearest percent, and we get
The percent of green planes = 29%
Thus, 29% of Planes are Green.
Learn more about the percentages here:
brainly.com/question/24159063
#SPJ1
(-2) (4+6)+(-2) 6 / (-2) (4-1) simplified
The simplified form of the expression is \(-32\).
To simplify the expression, we can perform the calculations written below step by step:
\(\(\frac{{-2(4+6)+(-2)6}}{{-2(4-1)}}\)\)
We follow the order of operations (PEMDAS/BODMAS):
Step 1: Simplify within parentheses:
\(\(4+6 = 10\)\).
Step 2: Perform multiplications and divisions from left to right:
\(\(-2(10) = -20\) and \(-2(4-1) = -2(3) = -6\)\).
Step 3: Evaluate the remaining additions and subtractions:
\(\(-20 + (-2) \cdot 6 = -20 - 12 = -32\)\).
Therefore, the simplified form of the expression \(\(\frac{{-2(4+6)+(-2)6}}{{-2(4-1)}}\) is \(-32\).\)
When simplifying an expression, several factors need consideration. First, apply the order of operations correctly, respecting parentheses and exponents. Next, combine like terms by adding or subtracting them. Distribute and simplify within parentheses or brackets as needed. Pay attention to negative signs and ensure their proper placement.
Finally, review the simplified expression to ensure accuracy and validity within the given context.
Note: The complete question is:
\(\(\frac{{-2(4+6)+(-2)6}}{{-2(4-1)}}\)\), calculate the simplified form of this expression.
For more questions on simplified form of the expression:
https://brainly.com/question/28323654
#SPJ8
Directions: Select the correct answer from each drop-down menu. Consider the expression below. 12x - 6x + 5 + 4x
If the expression is set equal to 10x + 5, then there would be solution(s).
If the expression is set equal to 10x + 7, then there would be solution(s).
If the expression is set equal to -10x + 5, then there would be solution(s).
Given statement solution is :- If the expression is set equal to 10x + 5, then there would be one solution.
If the expression is set equal to 10x + 7, then there would be no solution.
If the expression is set equal to -10x + 5, then there would be one solution.
If the expression 12x - 6x + 5 + 4x is set equal to 10x + 5, then there would be solution(s).
If the expression is set equal to 10x + 5, then there would be one solution.
If the expression is set equal to 10x + 7, then there would be no solution.
If the expression is set equal to -10x + 5, then there would be one solution.
For such more questions on Solutions to Given Equations
https://brainly.com/question/13729904
#SPJ8
problem referred below
pls help
Answer:
B
7 less than 3 times a number (X) is (3x-7), and then the sum of these two numbers means we have (3x-7)+X, and then we know this equals 109, leaving us with:
(3x-7)+x = 109
Find the original slope of (-6,-1) and (0,3)
Answer:
slope (m) = 2/3
Step-by-step explanation:
slope = change in x /change in y
Also, slope is y2 - y1 / x2 -x1. That is what I apply for this activity, hence:
slope = 3 - (-1) / 0 - (-6)
= 3 + 1 / 0 + 6
= 4 / 6
= 2/3
∴ slope(m) = 2/3
What graph would best display the data shown in the frequency table?
A. line plot
B. vertex-edge graph
C. histogram
D. stem-and-leaf graph
Answer:
histogram
Step-by-step explanation:
Find the maximum for the profit function,
P = 2x+10y
subject to the following constraints.
4x + 2y ≤ 5
-3x+y 2-2
X>0
(y ≥0
4x + 2y ≤ 5
-3x + y 2 -2
Round your answer to the nearest cent (hundredth).
Answer:
The maximum value of the profit function occurs at the corner point with the highest value, which is P2 = 25.
Therefore, the maximum profit is $25.
Step-by-step explanation:
Determine the equation of the circle with radius 9 and center ( − 1 , − 8 ).
The equation of the circle with radius 9 and center ( -1,-8 ) is( x + 1 )² + ( y + 8 )² = 81.
What is the equation of the circle?The standard form equation of a circle with center (h, k) and radius r is:
( x - h )² + ( y - k )² = r²
Given that the circle has a center of (-1, -8) and the radius is 9.
Hence; from the standard form of the equation of the circle:
Center ( h , k ) = ( -1, -8 )
h = -1
k = -8
And radius r = 9
Plug these values into the above formula and simplify.
( x - h )² + ( y - k )² = r²
( x - ( -1 ) )² + ( y - ( -8 ) )² = 9²
Simplify
( x + 1 )² + ( y + 8 )² = 81
Therefore, the equation of the circle is ( x + 1 )² + ( y + 8 )² = 81.
Learn more about equation of circle here: brainly.com/question/29288238
#SPJ1
Given the function:
What is the inverse function of g(x)?
g(x) = -
O g-4(X) = - 2x - 3
Og +(x) = -3(x-3)
O g 7(x)=-3x-2
O g-(x) = -2(x – 3)
Answer: The answer is D
g-1(x)= -2(x-3)
Step-by-step explanation:
The inverse of a function is its opposite
The inverse of the function g(x) is \(g^{-1}(x)= -2(x-3)\)
The function is given as;
\(g(x) = -0.5x + 3\)
Rewrite as:
\(y = -0.5x + 3\)
Swap the x and y variables
\(x = -0.5y + 3\)
Subtract 3 from both sides
\(-0.5y = x -3\)
Multiply both sides by -2
\(y= -2(x-3)\)
Rewrite as:
\(g^{-1}(x)= -2(x-3)\)
Hence, the inverse of the function g(x) is \(g^{-1}(x)= -2(x-3)\)
Read more about inverse functions at:
https://brainly.com/question/14391067
Quentin works as a used car salesman, where he earns $8 per hour and an average commission
of $260 per car sold. He wants to earn at least $1040 per week. Write an inequality to represent this scenario, define your variables and explain why you chose them.
Answer:
Step-by-step explanation:
$8 per hour + average commision $260 per car sold ≥ $1040 per week.
This two numbers can make 1040 dollars a week or less. It depends on how many cars he can sell.
Which expression is equivalent to 9(4 + r)?
Answer:
36+9r
by multiplying 9 &4 you get with 36. countinue multiplying and you also get 9r
Step-by-step explanation:
hope this helps
Write a function rule to model the cost of renting a truck for one day. Then evaluate the function for the given number of miles:Daily rental: $19.95Rate per mile: $0.50 per mileMiles traveled: 73 miles
The total cost of renting a truck for one day is compounded by the cost for the day of rent plus the cost for the miles travelled.
The cost for the day is $19.95, while the cost for the total miles traveled is the cost per mile ($0.50) times the total number of miles traveled. Let's call M the miles traveled and C the total cost of renting the truck.
The model will be as follows:
\(C=19.95+0.50\cdot M\)Now we need to evaluate the function for the given number of miles.
For this case, we are given that the miles traveled were 73.
Evaluating the function for M = 73:
\(\begin{gathered} C=19.95+0.50\cdot73 \\ \\ C=19.95+36.5 \\ \\ C=56.45 \end{gathered}\)Then, the total cost for the rent of a truck for one day when 73 miles were traveled is $56.45.
Expand the function.
f(x) = (3x-4)4
81x4 − 432x³ + [? ]x²
+
-
X +
PLS HELP
The expansion of the function \((3x - 4)^4\) simplifies to \(81x^4 - 432x^3 + 864x^2 - 768x + 256.\)
To expand the function \(f(x) = (3x - 4)^4\), we can use the binomial theorem. According to the binomial theorem, for any real numbers a and b and a positive integer n, the expansion of \((a + b)^n\) can be written as:
\((a + b)^n = C(n, 0)a^n b^0 + C(n, 1)a^{(n-1)} b^1 + C(n, 2)a^{(n-2)} b^2 + ... + C(n, n-1)a^1 b^{(n-1)} + C(n, n)a^0 b^n\)
where C(n, k) represents the binomial coefficient, which is given by C(n, k) = n! / (k!(n-k)!).
Applying this formula to our function \(f(x) = (3x - 4)^4\), we have:
\(f(x) = C(4, 0)(3x)^4 (-4)^0 + C(4, 1)(3x)^3 (-4)^1 + C(4, 2)(3x)^2 (-4)^2 + C(4, 3)(3x)^1 (-4)^3 + C(4, 4)(3x)^0 (-4)^4\)
Simplifying each term, we get:
\(f(x) = 81x^4 + (-432x^3) + 864x^2 + (-768x) + 256\)
Therefore, the expanded form of the function \(f(x) = (3x - 4)^4\) is \(81x^4 - 432x^3 + 864x^2 - 768x + 256\).
Note that the coefficient of \(x^3\) is -432, the coefficient of \(x^2\) is 864, the coefficient of x is -768, and the constant term is 256.
For more question on function visit:
https://brainly.com/question/11624077
#SPJ8
Note the complete question is
An artist's canvas has sides measuring 3x + 5 and 2x + 1 inches.
What is the area of the canvas? Show all work.
The artist laid the canvas flat on the floor and poured some paint in the center. The paint flows at a rate of r(t) = 2t where t represents time in minutes and r represents how far the paint is spreading on the canvas. The area of the paint can be expressed as A[r(t)]= rur?. What is the area of the circle created by the paint?
If the artist wants the circle to be at least 300 in?, will it be that large in 5 minutes? Support your answer with your work.
The area of the circle created by the paint is given by the expression 4πt².
The area of the circle is 100π, which is approximately 314.16 in².
The circle will be at least 300 in² in 5 minutes. Yes.
To find the area of the canvas, we multiply the lengths of its sides:
Area = (3x + 5) × (2x + 1)
Expanding the expression:
Area = 6x² + 3x + 10x + 5
Combining like terms:
Area = 6x² + 13x + 5
The area of the canvas is given by the expression 6x² + 13x + 5.
Now, let's find the area of the circle created by the paint.
The area of a circle is given by the formula A = πr², where r represents the radius.
The radius is given by the spreading of paint, which is r(t) = 2t.
Substituting the value of r(t) into the formula, we have:
A[r(t)] = π(2t)²
Simplifying:
A[r(t)] = π(4t²)
A[r(t)] = 4πt²
Now, let's determine if the area of the circle will be at least 300 in² in 5 minutes.
Substitute t = 5 into the area formula:
A[r(5)] = 4π(5)²
A[r(5)] = 4π(25)
A[r(5)] = 100π
Since 314.16 in² is larger than 300 in², the circle created by the paint will be larger than 300 in² in 5 minutes.
For similar questions on area of the circle
https://brainly.com/question/12269818
#SPJ8
Jemma and Debra work as consults. They both get hired for jobs. Jemma charges a fee of $5 plus an additional $22 per hour. Debra charges $20 per hour. Write an expression that
Answer:
Jemma: 22x + 5
Debra: 20x
Step-by-step explanation:
In a particular region, for families with a combined income of $75,000 or more, 15% of these families have no children, 35% of the families have one child, 45% have two children, and 5% have three children. Use this information to construct the probability distribution for X, where x represents the number of children per family for this income group. Arrange x in increasing order and write the probabilities P(x) as decimals
Answer:
The probability distribution for x:"number of children per family for this income group" is:
\(\text{P(x=0)}=0.15\\\\\text{P(x=1)}=0.35\\\\\text{P(x=2)}=0.45\\\\\text{P(x=3)}=0.05\\\\\)
Step-by-step explanation:
With the information given we have the relative frequencies of each category.
We know:
\(\text{P(x=0)}=0.15\\\\\text{P(x=1)}=0.35\\\\\text{P(x=2)}=0.45\\\\\text{P(x=3)}=0.05\\\\\)
You have just been approved for a 30 year 5.5% fixed home mortgage. The monthly payment that you qualify for is $879.32. Use the table provided to determine the price of a home that can be purchased. A 5-column table with 4 rows titled Monthly Payments per 1000 dollars of mortgage. Column 1 is labeled Interest Rate (percent) with entries 5, 5.5, 6, 6.5. Column 2 is labeled 10 Years with entries 10.61, 10.86, 11.11, 11.36. Column 3 is labeled 20 years with entries 6.60, 6.88, 7.17, 7.46. Column 4 is labeled 30 years with entries 5.37, 5.68, 6.00, 6.33. Column 5 is labeled 40 years with entries 4.83, 5.16, 5.51, 5.86. a. $154,267 c. $156,753 b. $154,810 d. $157,153
Answer:
b. $154,810
Step-by-step explanation:
You want to know the price of a home that can be purchased for a monthly payment of $879.32 on a 30-year loan at 5.5%.
TableThe given table tells you the multiplier m used to find the monthly payment p from the loan amount P for different time periods and interest rates.
p = (P/1000)×m
ApplicationThe table value for a 30-year loan at 5.5% is m = 5.68. Solving the equation for P, we have ...
1000p/m = P
1000(879.32/5.68) = P ≈ 154,809.86 ≈ 154810
You qualify for a loan of $154,810.
__
Additional comment
The multiplier 5.68 is found on row 2 (5.5%) of column 4 (30 years).
By answering the presented question, we may conclude that As a result, equation the answer is (b) $154,810.
What is equation?A mathematical equation is a formula that connects two statements and denotes equivalence with the equals symbol (=). An equation is a mathematical statement that shows the equality of two mathematical expressions in algebra. In the equation 3x + 5 = 14, for example, the equal sign separates the variables 3x + 5 and 14. A mathematical formula describes the connection between the two sentences that occur on opposite sides of a letter. The symbol and the single variable are frequently the same. As in 2x - 4 Equals 2, for instance.
To establish the purchase price of a property, we must use the monthly payment and the table supplied to determine the mortgage amount that corresponds to the monthly payment.
According to the data, the monthly payment per $1000 of mortgage for a 30-year fixed mortgage at a 5.5% interest rate is $5.68.
Hence, to calculate the mortgage amount for a $879.32 monthly payment, we may apply the following formula:
Mortgage amount = monthly payment / mortgage payment per $1000
$879.32 mortgage amount / $5.68 per $1000
Loan amount = $154,810
As a result, the purchasing price of a house is $154,810.
As a result, the answer is (b) $154,810.
To know more about equation visit:
https://brainly.com/question/649785
#SPJ1
A college employs 15 stewards. What is the average monthly wage of the stewards if the college pays 226.20 in wages each month?
$15.08
Step-by-step explanation:As the value 226.20 is the total of all wages, you can work out the mean.
Mean averages are usually worked out as the total / number of values.
Because you already know the total is 226.20 and the number of values is 15 different wages, divide 226.20 by 15 to get $15.08.