(a) The unit vector normal to the surface at point P is n = (-2/3, -2/3, 1/3).
(b) The gradient vector ∇f = (-2x, -2y, 0.5z).
(c) The curl of the gradient vector, ∇ × ∇f, is not applicable in this case since ∇f is not a vector field, but a surface normal.
To find a unit vector normal to the surface at point P(1, 1, 2) given the equation 0.25z² - x² - y² = 0, we can follow these steps:
Step 1: Define the Surface Function
Let's define the surface function f(x, y, z) based on the given equation:
f(x, y, z) = 0.25z² - x² - y²
Step 2: Calculate the Gradient Vector (∇f)
The gradient vector (∇f) represents the vector of partial derivatives of the surface function. Calculate ∇f(x, y, z) by taking the partial derivatives of f(x, y, z) with respect to each variable:
∂f/∂x = -2x
∂f/∂y = -2y
∂f/∂z = 0.5z
Thus, the gradient vector (∇f) is (∇f) = (-2x, -2y, 0.5z).
Step 3: Evaluate ∇f at Point P
Evaluate the gradient vector (∇f) at point P(1, 1, 2) by substituting the coordinates into (∇f):
∇f(P) = (-2(1), -2(1), 0.5(2))
= (-2, -2, 1)
Step 4: Normalize the Normal Vector
To obtain a unit vector normal to the surface at point P, we need to normalize (∇f(P)) by dividing it by its magnitude.
Magnitude of ∇f(P) = √((-2)² + (-2)² + 1²)
= √(4 + 4 + 1)
= √9
= 3
The unit vector normal to the surface at point P is then:
n = (∇f(P)) / |∇f(P)|
= (-2, -2, 1) / 3
= (-2/3, -2/3, 1/3)
So, the unit vector normal to the surface at point P(1, 1, 2) is n = (-2/3, -2/3, 1/3).
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The question is -
Find a unit vector normal to the surface at Point P: (1,1,2):
0.25z² - x² - y² = 0
(a) n = ?
(b) ∇f = ?
(c) ∇ × ∇f = ?
Which quadrant of a coordinate plane contains the point (-2,8) ?
A) Quadrant I
B) Quadrant II
C) Quadrant III
D) Quadrant IV
Answer:
Step-by-step explanation:
i think its C
The radius of a circle is 1 inch. What is the area?
r=1 in
Give the exact answer in simplest form.
Answer:
3.14 square inches or π square inches
Step-by-step explanation:
The radius of a circle is 1 inch. What is the area?
r=1 in
The formula for the area of a circle is given as:
πr²
The radius (r) = 1 inch
Hence,
Area of the circle = π × 1²
= 3.1415926536 square inches
Approximately = 3.14 square inches or we can say that the Area of the circle = π square inches
Find SQ?
Find m<QRS?
Answer:
6. 26. 7. 34
Step-by-step explanation:
6.) 13+13=26. 7.) 17+17=34
Please help! Will give Brainliest! SHOW ALL WORK
Factor by grouping:
3x^(3)-6x^(2)+15x-30
the answer would be b on scholar
Answer:
3 (x² + 5) (x - 2)
Step-by-step explanation:
3x³- 6x² + 15x - 30
=> 3 (x³ - 2x² + 5x - 10)
=> 3 [x²(x - 2) + 5 (x - 2)]
=> 3 (x² + 5) (x - 2)
determine if the described set is a subspace. assume a, b, and c are real numbers. the subset of r3 consisting of vectors of the form a b c , where a=b=c
The subset satisfies all three conditions, it is a subspace of [tex]R^{3}[/tex].
To determine if the described set is a subspace, we need to check if it satisfies three conditions: closure under addition, closure under scalar multiplication, and contains the zero vector.
Let's consider the subset of [tex]R^{3}[/tex] consisting of vectors of the form (a, b, c), where a = b = c.
Closure under addition: Let (a₁, b₁, c₁) and (a₂, b₂, c₂) be two vectors in the subset.
Their sum is (a₁ + a₂, b₁ + b₂, c₁ + c₂).
Since a₁ = b₁ = c₁ and a₂ = b₂ = c₂, we have (a₁ + a₂, b₁ + b₂, c₁ + c₂) = (a₁ + a₁, b₁ + b₁, c₁ + c₁) = (2a₁, 2b₁, 2c₁).
Since 2a₁ = 2b₁ = 2c₁, the sum is also in the subset.
Closure under scalar multiplication: Let (a, b, c) be a vector in the subset and let k be a real number.
The scalar multiple k(a, b, c) is (ka, kb, kc). Since ka = kb = kc, the scalar multiple is also in the subset.
Contains the zero vector: The zero vector is (0, 0, 0). Since 0 = 0 = 0, it is in the subset.
Therefore, the subset satisfies all three conditions, it is a subspace of [tex]R^{3}[/tex].
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A company is reviewing a batch of 25 products to determine if
any are defective. On average, 3.1% of products are defective.
Does this situation describe a binomial experiment, and why?
What is the pr
The probability that the company will find 2 or fewer defective products in this batch is approximately 0.995. The probability that 4 or more defective products are found in this batch is approximately 0.005. The decision to stop production would depend on various factors and cannot be determined solely based on finding 5 defective products.
Yes, this situation can be described as a binomial experiment. A binomial experiment has the following characteristics:
It consists of a fixed number of trials or observations.Each trial has only two possible outcomes, success or failure.The probability of success remains constant for each trial.The trials are independent of each other.To calculate the probability that the company will find 2 or fewer defective products in this batch, we need to calculate the probabilities for each possible outcome (0, 1, and 2 defective products) and sum them up.
Let's denote the probability of finding a defective product as p, which is 3.1% or 0.031 in decimal form.
[tex]P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2)\\P(X = 0) = C(25, 0) * p^0 * (1 - p)^{25 - 0}\\P(X = 1) = C(25, 1) * p^1 * (1 - p)^{25 - 1}\\P(X = 2) = C(25, 2) * p^2 * (1 - p)^{25 - 2}[/tex]
Using the binomial coefficient formula C(n, r) = n! / (r!(n - r)!), we can calculate these probabilities:
[tex]P(X = 0) = C(25, 0) * 0.031^0 * (1 - 0.031)^{25 - 0}\\ = 1 * 1 * (0.969)^{25}\\ = 0.643\\P(X = 1) = C(25, 1) * 0.031^1 * (1 - 0.031)^{25 - 1}\\ = 25 * 0.031 * (0.969)^{24}\\ = 0.295\\P(X = 2) = C(25, 2) * 0.031^2 * (1 - 0.031)^{25 - 2}\\ = 300 * 0.031^2 * (0.969)^{23}\\ = 0.057\\P(X \leq 2) = 0.643 + 0.295 + 0.057\\ = 0.995[/tex]
Therefore, the probability that the company will find 2 or fewer defective products in this batch is approximately 0.995.
To calculate the probability that 4 or more defective products are found in this batch, we can use the complement rule:
[tex]P(X \geq 4) = 1 - P(X \leq 3)\\P(X = 3) = C(25, 3) * 0.031^3 * (1 - 0.031)^{25 - 3}\\ = 2300 * 0.031^3 * (0.969)^{22}\\ = 0.040\\P(X \geq 4) = 1 - P(X \leq 3)\\ = 1 - (P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3))\\ = 1 - (0.643 + 0.295 + 0.057 + 0.040)\\ = 1 - 0.995\\ = 0.005[/tex]
Therefore, the probability that 4 or more defective products are found in this batch is approximately 0.005.
If the company finds 5 defective products in this batch, it does not necessarily mean that they should stop production. The decision to stop production would depend on various factors such as the acceptable level of defects, the cost of production, the impact on customer satisfaction, etc. It would require a more comprehensive analysis to make a decision in this regard.
Complete Question:
A company is reviewing a batch of 25 products to determine if any are defective. On average, 3.1% of products are defective. Does this situation describe a binomial experiment, and why? What is the probability that the company will find 2 or fewer defective products in this batch? What is the probability that 4 or more defective products are found in this batch? If the company finds 5 defective products in this batch, should the company stop production?
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In ΔLMN, l = 32 inches, m = 37 inches and n=46 inches. Find the area of ΔLMN to the nearest 10th of an square inch.
Answer:
587.9
Step-by-step explanation:
Delta math
A quadrilateral has interior angles a, 112 degrees, 97 degrees, and 83 degrees. Find the missing angle measure in the quadrilateral. 83° + 97° + a° + 112° = 360° 292° + a° = 360° The measure of the missing angle is °.
Answer:
The missing angle is 68 degrees
Step-by-step explanation:
which polynomial is prime? 3x3 3x2 – 2x – 2 3x3 – 2x2 3x – 4 4x3 2x2 6x 3 4x3 4x2 – 3x – 3
To determine which polynomial is prime, we need to check if it can be factored into simpler polynomials or if it is irreducible.
Let's analyze the given polynomials:
3x^3 + 3x^2 - 2x - 2
3x^3 - 2x^2 + 3x - 4
4x^3 + 2x^2 + 6x + 3
4x^3 + 4x^2 - 3x - 3
To determine if these polynomials are prime, we need to check if they can be factored further. If they cannot be factored into simpler polynomials, they are considered prime.
The polynomial 3x^3 + 3x^2 - 2x - 2 can be factored as (x + 1)(3x^2 - 2).
The polynomial 3x^3 - 2x^2 + 3x - 4 cannot be factored further.
The polynomial 4x^3 + 2x^2 + 6x + 3 can be factored as (2x + 1)(2x^2 + 3).
The polynomial 4x^3 + 4x^2 - 3x - 3 can be factored as (2x + 1)(2x^2 - 3).
Based on the factorizations, the only polynomial that is prime (cannot be factored further) is 3x^3 - 2x^2 + 3x - 4.
Therefore, the polynomial 3x^3 - 2x^2 + 3x - 4 is prime.
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Consider a binomial distribution. About 47% of Salinas residents bank entirely online. A random sample of 62 residents is selected. Find the probability that less than 21 bank entirely online. 0.0229 0.0339 None of these 0.0251 0.228
Given information: Consider a binomial distribution. About 47% of Salinas residents bank entirely online.
A random sample of 62 residents is selected. Find the probability that less than 21 bank entirely online. The given data follows binomial distribution with n = 62 and p = 0.47
Let X be the random variable representing the number of residents bank entirely online. Then X ~ B(62, 0.47) We need to find the probability that less than 21 bank entirely online. P(X < 21) = P(X ≤ 20)P(X ≤ 20) = ∑P(X = x) , where x = 0, 1, 2, 3, ... 20Using binomial probability distribution, P(X ≤ 20) = ∑P(X = x) , where x = 0, 1, 2, 3, ... 20P(X ≤ 20) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + ... + P(X = 20)P(X ≤ 20) = ∑P(X = x) , where x = 0, 1, 2, 3, ... 20P(X ≤ 20) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + ... + P(X = 20)P(X ≤ 20) = ∑P(X = x) , where x = 0, 1, 2, 3, ... 20P(X ≤ 20) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + ... + P(X = 20)P(X ≤ 20) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + ... + P(X = 20)
Now, we can use a calculator or software to find this sum. Using software or calculator, P(X ≤ 20) = 0.0251Therefore, the probability that less than 21 bank entirely online is 0.0251. Hence, the correct option is 0.0251.
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Use the Trapezoidal Rule, the Midpoint Rule, and Simpson's Rule to approximate the given integral with the specified value of n. (Round your answers to six decimal places.)
3 ∫ 2 √x^3 – 8dx
The function [tex]√(x^3 - 8)[/tex] at each x value is 0.25 * [-1.902 - 1.609]. The interval [2, 3] into subintervals and apply the respective formulas.
To approximate the integral ∫[2 to 3] √(x^3 – 8) dx using the Trapezoidal Rule, Midpoint Rule, and Simpson's Rule, we need to divide the interval [2, 3] into subintervals and apply the respective formulas. Let's compute the approximations for each rule.
Step 1: Determine the subinterval width, h.
We can calculate h using the formula:
h = (b - a) / n
Given:
a = 2
b = 3
Let's use different values of n for each rule.
For Trapezoidal Rule, let's set n = 4.
For Midpoint Rule, let's set n = 4.
For Simpson's Rule, let's set n = 2.
Step 2: Compute the approximations for each rule.
Using the Trapezoidal Rule:
Approximation = (h / 2) * [f(a) + 2f(x1) + 2f(x2) + ... + 2f(xn-1) + f(b)]
For n = 4:
h = (3 - 2) / 4 = 0.25
Approximation = (0.25 / 2) * [f(2) + 2f(2.25) + 2f(2.5) + 2f(2.75) + f(3)]
Evaluate the function √(x^3 - 8) at each x value:
f(2) ≈ √(2^3 - 8) ≈ -2
f(2.25) ≈ √(2.25^3 - 8) ≈ -1.726
f(2.5) ≈ √(2.5^3 - 8) ≈ -1.414
f(2.75) ≈ √(2.75^3 - 8) ≈ -1.125
f(3) ≈ √(3^3 - 8) ≈ -0.464
Approximation = (0.25 / 2) * [-2 + 2(-1.726) + 2(-1.414) + 2(-1.125) + (-0.464)]
≈ (0.125) * [-2 - 3.452 - 2.828 - 2.25 - 0.464]
≈ (0.125) * [-11.994]
≈ -1.49925
Using the Midpoint Rule:
Approximation = h * [f(x1) + f(x2) + ... + f(xn)]
For n = 4:
h = (3 - 2) / 4 = 0.25
Approximation = 0.25 * [f(2.125) + f(2.375) + f(2.625) + f(2.875)]
Evaluate the function √(x^3 - 8) at each x value:
f(2.125) ≈ √(2.125^3 - 8) ≈ -1.902
f(2.375) ≈ √(2.375^3 - 8) ≈ -1.609
f(2.625) ≈ √(2.625^3 - 8) ≈ -1.335
f(2.875) ≈ √(2.875^3 - 8) ≈ -1.073
Approximation = 0.25 * [-1.902 - 1.609]
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I WILL GIVE BRAINLIEST!!!
Answer:
*Pew Pew*
Step-by-step explanation:
What inequality does this number line show?
I need this question in 11 hours QwQ
Answer:
X>8
Step-by-step explanation:
Open circle, going towards larger numbers, meaning it is greater than eight but not equal to.
A pro-athlete is offered an eight-year
contract with a starting salary of
$400,000. She will receive an increase
of so each year.
The athlete's salary each year forms a geometric
sequence
What is a1, in thousands?
What is r?
Answer:
400
1.05
Step-by-step explanation:
The athlete should take the second offer.
It is given by the formula,
A = P(1+r)ⁿ
where A is the value after n period of time, P is the initial amount, and,
r is the rate of increment or decrement.
Now, Total amount = $400,000(1+5%)⁷
= $400,000(1+0.05)⁷
= $400,000(1.4071)
= $562840.17
Now, the total amount that the pro-athlete will get in 8 years is,
Total amount = $425,000(1+4%)⁷
= $425,000(1+0.04)⁷
= $425,000(1.3159)
= $559,271
Since the total amount that the athlete will get in the next 8 years is more for the second offer, the athlete should take the second offer.
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hey guys pls help
explain answer pls
NO links or reported
Which expression is equivalent to
1/3b -7
Answer:
2/6b-7
Step-by-step explanation:
Answer:
1/3(b-21)
hope it helps :)
HELP A BRAINLY SISTA OUT!!!
Carl can paint a room 4 hours faster than Jennifer can. If they work together, they can complete the job in 6 hours. Using complete sentences, explain each step in figuring out how to determine the time it would take Jennifer to complete this job on her own. (10 points)
Jenifer can paint a room in 10 hours. When Carl helps the time is reduced to 6 hours.
Answer:
10 hours is Jennifer or 12
Step-by-step explanation:
Find the value of the variable. If the answer is not an integer, leave it in simplest radical form,
15
A. 16^2
B16
C 17
D. 17^2
Write an equation of the line that passes through a pair of points:
a. y = x + 3
b. y = x - 3
c. y = -x + 2
d. y = -x-2
Answer:
C. y = -x + 2
Step-by-step explanation:
Sana nakatulong
Describing How to Create a System of Equations
2
Using the equation y=-x-5, describe how to create a
system of linear equations with an infinite number of
solutions
}
Answer:This seems easy! do u want help on how to do the answer or r u just looking for the answer????/
Step-by-step explanation:
what’s 741.38 to five decimal places?
Answer:
Step-by-step explanation:
If you're referring to moving the decimal point five places to the left, your answer should be
.0074138
If you're referring to the right, your answer should be
74138000.
3(1+x2)dy/dx=2xy(y3-1)
If differential equation is 3(1+x^2)dy/dx = 2xy(y^3-1) then exponential is |y^3-1| = Ce^(x^2).
To solve the given differential equation, we can begin by separating the variables. We divide both sides of the equation by 2xy(y^3-1) to get:
3(1+x^2)dy/dx = 2xy(y^3-1)
(3(1+x^2))/(2xy(y^3-1)) dy = dx
Next, we integrate both sides with respect to their respective variables. On the left side, we integrate with respect to y, and on the right side, we integrate with respect to x:
∫(3(1+x^2))/(2xy(y^3-1)) dy = ∫dx
After evaluating the integrals, we obtain:
ln|y^3-1| = x^2 + C
Where C is the constant of integration. Finally, we can exponentiate both sides of the equation:
|y^3-1| = e^(x^2+C)
|y^3-1| = Ce^(x^2)
Here, Ce^(x^2) represents the constant of integration. Since the absolute value can be positive or negative, we consider both cases and solve for y to obtain the general solution.
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PLS ANSWER DUE
TODAY! WILL
MARK BRAINLIEST
3. Find the measure of arc JK.
Hint - arc LK is a semi-circle!
Find JK
A) 90
B) 116
C) 128
D) 130
Answer:
Option C
Step-by-step explanation:
We will analyze the figure and note down the properties given in the figure,
1). LK is a diameter so this line (chord) divides the circle into two arcs measuring 180°.
m(arc LJK) = m(arc LK) = 180°
2). m(∠JKL) = 28°
Therefore, by the property inscribed angle and intercepted arcs,
Intercepted arc (JL) = 2 × (Inscribed angle JKL)
m(arc JL) = 2(26°)
= 52°
Now we will use these two points to get the measure of arc JK.
m(arc JK) + m(arc LK) + m(arc JL) = 360°
m(arc JK) + 180° + 52° = 360°
m(arc JK) = 360° - 232°
= 128°
Option C will be the correct option.
Please answer correctly! I will mark you as Brainliest!
Answer: 1047.2
Step-by-step explanation:
V=(4/3)(pi)(r^3)
V=(4/3)(pi)(5^3)
=523.6
Since there are 2 pinatas, you multiply 523.6 by 2.
=1047.2
Solve the following initial value problem. cos^2 (x) sin x dy/dx + (cos^3 (x))y = 5 ; y(π/3) = 4
The solution to the initial value problem [tex]cos^{2xsinx}dy/dx + cos^{3(x)}y = 5, y(\pi/3) = 4[/tex], involves solving the given differential equation and applying the initial condition.
To solve the differential equation, we can use an integrating factor. The integrating factor for the given equation is [tex]e^{\int{cos^3x} \, dx}[/tex]. Integrating [tex]cos^3(x)[/tex] gives us (1/4)(3sin(x) + sin(3x)).
Multiplying the entire equation by the integrating factor, we get [tex](1/4)(3sin(x) + sin(3x)) * cos^2(x)sin(x) * dy/dx + (1/4)(3sin(x) + sin(3x)) * cos^3(x) * y = 5 * (1/4)(3sin(x) + sin(3x))[/tex]
Simplifying, we have [tex](3sin(x) + sin(3x)) * cos(x)sin^2(x) * dy/dx + (3sin(x) + sin(3x)) * cos^3(x) * y = 5 * (3sin(x) + sin(3x))/4[/tex]
This equation can be rewritten as [tex]d/dx[(3sin(x) + sin(3x)) * cos^2(x) * y] = 5 * (3sin(x) + sin(3x))/4[/tex].
Integrating both sides with respect to x, we obtain [tex](3sin(x) + sin(3x)) * cos^2(x) * y = 5 * (3sin(x) + sin(3x))/4 * x + C[/tex], where C is the constant of integration.
Applying the initial condition y(π/3) = 4, we can substitute x = π/3 and y = 4 into the equation to find the value of C.
By substituting the values, we get [tex](3sin(\pi /3) + sin(3\pi/3)) * cos^2(\pi/3) * 4 = 5 * (3sin(\pi/3) + sin(3\pi/3))/4 * (\pi/3) + C[/tex]
Simplifying and solving for C, we can determine the value of C.
Finally, we can substitute the value of C back into the equation to obtain the solution to the initial value problem.
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evaluate the iterated integral by changing to cylindrical coordinates. 0 −1 √1 − x2 −√1 − x2 1 xy2 dz dy dx 0
To evaluate the iterated integral ∫∫∫ R x[tex]y^{2}[/tex] dz dy dx over the given region R in cylindrical coordinates, we first convert the limits of integration and the integrand to the cylindrical form. Then we evaluate the integral using the appropriate transformations and calculations.
In cylindrical coordinates, we express points in three-dimensional space using the variables (ρ, θ, z), where ρ represents the distance from the origin to a point projected onto the xy-plane, θ denotes the angle measured counterclockwise from the positive x-axis to the projection of the point onto the xy-plane, and z represents the height of the point above or below the xy-plane.
To evaluate the given iterated integral, we begin by transforming the limits of integration. The outermost integral corresponds to the variable ρ, which ranges from 0 to 1. The next integral corresponds to θ and remains unchanged since the region R does not involve any angular restrictions. The innermost integral corresponds to z and ranges from the lower limit of √(1 - [tex]x^{2}[/tex]) to the upper limit of √(1 - [tex]x^{2}[/tex]), as determined by the given limits of integration.
Next, we convert the integrand, [tex]xy^2[/tex], to cylindrical coordinates. The variable x is replaced by ρcosθ, and y is replaced by ρsinθ, giving us [tex]ρ^3cosθsin^2θ[/tex].
With the limits of integration and the integrand expressed in cylindrical coordinates, we proceed to evaluate the iterated integral. Following the order of integration, we integrate ρ from 0 to 1, θ from 0 to 2π, and z from √(1 - [tex]x^{2}[/tex]) to -√(1 -[tex]x^{2}[/tex]). The integration of ρ yields [tex]ρ^4[/tex]/4, the integration of θ results in 2π, and the integration of z simplifies to 0.
Finally, we substitute the limits of integration and perform the calculations: (∫(0 to 1) [tex]ρ^4[/tex]/4 dρ) * (2π) * (0). Evaluating the integral of[tex]ρ^4[/tex]/4 yields 1/20, and multiplying this by 2π and 0 gives us the final result of 0.
Therefore, the evaluated iterated integral in cylindrical coordinates is 0.
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Express 0.09 as a fraction.
Answer:
9/100 is the answer i believe
Answer:
the answer is 9/100
Step-by-step explanation:
9 ÷ 100= 0.09
150 is 75% of what number?
Answer:
200
Step-by-step explanation:
0.75X = 150
X = 200
so 200 is the answer
Answer:
200
150 is 75% of 200
Step-by-step explanation:
150 is 75% of what number
we can change this so it is simpler to understand.
150 = 75% of x
whenever it says "of" it is telling you to multiply
150 = 75% * x
now we simplify
150 = 75/100 * x
150 = 75x/100
*100 *100
15000 = 75x
/75 /75
200 = x
150 is 75% of 200
Camden invested $260 in an account paying an interest rate of 4-1/8 % compounded annually. Evan invested $260 in an account paying an interest rate of 3-7/8 compounded continuously. After 13 years, how much more money would camden have in his account than Evan, to the nearest dollar
Answer:
$5500
Step-by-step explanation:
i need help pleaseeee
Answer:
Step-by-step explanation:
Answer: -6,-7,-8 etc.
Step-by-step explanation: -2 times -6 = 12 bc a negative times a negative = a positive, and -2×-5=10 which is equal to 10 so if we try -6 it gives us 12 which is greater than 10.
Hope this helps!