PLEASE HELP! I'LL MAKE WHOEVER HELPS BRAINLIEST!! Which property is this an example of: 6 x 7 = 7 x 6

Associative Property of Addition

Associative Property of Multiplication

Commutative Property of Addition

Commutative Property of Multiplication

Answer:

The percentage increase in Jayana's postcard collection is 15%

Step-by-step explanation:

Jayana had 20 postcards last year

With 3 more postcards this year

From the given equation Quantity = Percent x Whole

Here;

Let P = Percent/100%

Quantity = Increment in postcard = 3 postcards

Whole = The total postcards from last year = 20 postcards

Hence,

3 postcards = P x 20 postcards

P = 3/20 = 0.15

Recall P = Percent/100%

∴ Percent = P x 100% = 0.15 x 100% = 15%

The percentage increase in Jayana's postcard collection is 15%

Answer:

$ 375 / month

Step-by-step explanation:

$ 18 000 / 48 months = 375 /month

The minimum amount he should save per month to achieve his goal is $375.00. Thus, option 2 is correct.

Given that:

Number of months = 48

Monthly savings = $18,000

The minimum amount to save per month can be calculated by dividing the total amount by the number of months:

Minimum monthly savings goal = Total amount to save / Number of months

Minimum monthly savings goal = $18,000 / 48

Minimum monthly savings goal ≈ $375.00

Therefore, the minimum amount he should save per month to achieve his goal is $375.00. Thus, option 2 is correct.

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Answer:

1. C  2. A

Step-by-step explanation:

your welcome =0 (=

Answer:

345 miles per hour = 300 knots per hour

Step-by-step explanation:

k being knots

300 times 1.15

1.15 miles per hour for every 1 knot per hour

Answer:

#19 is 16 and tahts all i know

Answer:

2

Step-by-step explanation

Answer:

8.4 miles

Step-by-step explanation:

Given that :

Total time taken = 78 minutes = 78/60 = 1.3 hours

To Speed = 14 mph

Fro Speed = 12 mph

Let the distance be represented as, d

Distance = speed * time

Time = distance / speed

To time + Fro time = 1.3 hours

d / 14 + d / 12 = 1.3 hours

Take lcm of 14 and 12 ; = 84

(6d + 7d) / 84 = 1.3

13d /84 = 1.3

13d = 1.3 * 84

13d = 109.2

d = 109.2 / 13

d = 8.4 miles

The distance is 8.4 miles

Answer:

Slope: 3/2

Y-intercept: 3

Step-by-step explanation:

Because the equation is set up as mx+b, the slope is actually just the number in front of x, and the y-intercept is 3

Answer:

y = 1 + 2√7 or y = 1 - 2√7

Step-by-step explanation:

To complete the square, you need to add and subtract the square of half of the coefficient of the y term.

First, you can factor out a 1 from the y^2 - 2y term:

y^2 - 2y - 27 = 0

y^2 - 2y = 27

Next, take half of the coefficient of the y term (-2/2 = -1) and square it (1):

y^2 - 2y + 1 - 1 = 27

The "+1 -1" doesn't change the value of the equation, it's just a way to add 0 to the equation so we can complete the square.

Now you can rewrite the left side as a perfect square:

(y - 1)^2 - 28 = 0

Add 28 to both sides:

(y - 1)^2 = 28

Take the square root of both sides (remembering to include both positive and negative square roots):

y - 1 = ±√28

y = 1 ± 2√7

So the solutions are:

y = 1 + 2√7

y = 1 - 2√7

Answer: y=± 2√7+1

6.29

Step-by-step explanation: Use the formula

(b/2)^2  in order to create a new term. Solve for y by using this term to complete the square.

Answer:

A will equal 17.

Step-by-step explanation:

Answer:

x = - 8, x = 6

Step-by-step explanation:

Given the 2 equations

x² + y² = 100 → (1)

y = x + 2 → (2)

Substitute y = x + 2 into (1)

x² + (x + 2)² = 100

x² + x² + 4x + 4 = 100

2x² + 4x + 4 = 100 ( subtract 100 from both sides )

2x² + 4x - 96 = 0 ( divide through by 2 )

x² + 2x - 48 = 0 ← in standard form

(x + 8)(x - 6) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 8 = 0 ⇒ x = - 8

x - 6 = 0 ⇒ x = 6

Rhines criterion implies that there is a minimum length scale for baroclinic instability to take place, which is given by:

L = 2π/kx = 2π[(N² - f₂²)/(f₁² - f₂²)]¹/²

In a 2-layer channel with a flat bottom and infinite width in y, the dispersion relation for baroclinic instability is given by:

ω = kx[(f₁² - f₂²)/(N² - f₂²)]¹/²

Where ω is the frequency, kx is the wavenumber in the x-direction, f₁ and f₂ are the Coriolis parameters for the upper and lower layers, and N is the buoyancy frequency.

In the presence of rotation, the minimum length for baroclinic instability to take place is determined by the condition that the frequency ω must be positive. This means that:

(f₁² - f₂²)/(N² - f₂²) > 0

or equivalently:

f₁ > (N²f₂)¹/²

This condition implies that the Coriolis parameter in the upper layer must be greater than the square root of the product of the buoyancy frequency and the Coriolis parameter in the lower layer. This is known as the "Rhines criterion" and represents a necessary condition for the development of baroclinic instability in rotating fluids.

Furthermore, the Rhines criterion implies that there is a minimum length scale for baroclinic instability to take place, which is given by:

L = 2π/kx = 2π[(N² - f₂²)/(f₁² - f₂²)]¹/²

This length scale represents the typical size of the eddies that form due to baroclinic instability in rotating fluids, and is proportional to the inverse square root of the difference between the Coriolis parameters in the upper and lower layers.

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Answer:

The variable "a" can represent anything except a negative number since it is negative 38 on the opposite end, so put 1 or anything higher to make this equation true. :D

Step-by-step explanation:

The significance level is set at 5%, and the probability of the result is 0%, which is less than the significance level. The result is statistically significant.

We are given that;

The probability of the result=(7.7/9.2/4.6/5/7.8)%

Now,

To determine the probability of the treatment group’s mean being lower than the control group’s mean by 15 points or more, we need to find the difference between the two sample means and compare it to the standard error of the difference. The standard error of the difference can be estimated using the formula:

SE = √(s1^2 / n1) + (s2^2 / n2)

where s1 and s2 are the sample standard deviations and n1 and n2 are the sample sizes.

Assuming that the treatment group is group 1 and the control group is group 2, we can plug in the values given in the question:

SE = √(9.2^2 / 30) + (7.7^2 / 30)

SE = √3.02

SE = 1.74

The difference between the two sample means is:

x1 - x2 = 85 - 100

x1 - x2 = -15

To find the probability of this difference or lower, we need to find the z-score and use a normal distribution table or calculator3:

z = (x1 - x2) / SE

z = (-15) / 1.74

z = -8.62

Using a normal distribution table or calculator, we can find that P(z ≤ -8.62) ≈ 0, which means that the probability of the treatment group’s mean being lower than the control group’s mean by 15 points or more is very close to zero.

Therefore, by probability the answer will be statistically significant.

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Answer:

your awnser would be. 1/4

Answer:

y=3x-2

Step-by-step explanation:

3/1 simp so 3

then pick a point (1,1) I marked were what goes hope that helps you  understand        

(1)=(3)(1)+b

1=3+b

-3 each side                  

1-3=-2

-2=b

y=3x-2

the value of the iterated integral is (π/8) (2 - e^(-16)).

We have the iterated integral:

∫[0,4] ∫[0,√(16-x^2)] e^(-x^2-y^2) dy dx

To convert this to polar coordinates, we need to express x and y in terms of r and θ.

We have:

x = r cos(θ)

y = r sin(θ)

We also need to express the differential element dA in terms of polar coordinates. We have:

dA = r dr dθ

Substituting these expressions into the given integral, we get:

∫[0,π/2] ∫[0,4] e^(-r^2) r dr dθ

The limits of integration for θ are 0 to π/2 because the region lies in the first and second quadrants.

We can evaluate this integral using the fact that the integral of e^(-r^2) is √π/2:

∫[0,π/2] ∫[0,4] e^(-r^2) r dr dθ

= ∫[0,π/2] [-1/2 e^(-r^2)] [0,4] dθ

= ∫[0,π/2] (1/2 - 1/2 e^(-16)) dθ

= π/4 - π/8 (1 - e^(-16))

= (π/8) (2 - e^(-16))

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1. P-adic Numbers:

P-adic numbers are a specialized alternative not commonly used as a continuity strategy in mathematics. They are an extension of the real numbers that provide a different way of measuring and analyzing numbers. P-adic numbers are based on a different concept of distance, known as the p-adic metric. This metric assigns a measure of closeness or distance between numbers based on their divisibility by a prime number, p. P-adic numbers have unique properties and can be useful in number theory, algebraic geometry, and other branches of mathematics. However, they are not typically employed as a continuity strategy in practical applications.

2. Nonstandard Analysis:

Nonstandard analysis is a mathematical framework that provides an alternative approach to calculus and analysis. It introduces new types of numbers called "infinitesimals" and "infinite numbers" that lie between the standard real numbers but are infinitely smaller or larger than any real number. Nonstandard analysis allows for more rigorous treatment of infinitesimal quantities and provides a different perspective on limits, continuity, and differentiation. While nonstandard analysis has theoretical implications and can provide valuable insights in mathematical research, it is not commonly used as a continuity strategy in practical applications where standard analysis and calculus are more prevalent.

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Answer:

5 creo                                                                

Step-by-step explanation:

Answer:

B.

at most 199 miles

Step-by-step explanation:

To find how many miles Emily drove, we need to use the equation

Total cost = flat fee + miles driven * cost per mile

Substituting in the numbers

121 ≥ 21.50 + m * .5

121≥ 21.50 +.50m

Subtract 21.50 from each side.

99.50 ≥ .5m

Divide each side by .5

199 ≥m

Emily drove less than or equal to 199 miles

a. The equation that can be used to decode the secret code is m = c - 2.

b. The decoded message for "OCVJ KU HWPI!" is "MATHE IS FUN!"

a. To decode the secret code into the original message, we can rearrange the equation c = m + 2 to solve for m:

m = c - 2

So the equation that can be used to decode the secret code is m = c - 2.

b. Using the given code "OCVJ KU HWPI!", we can apply the decoding equation to each letter to retrieve the original message.

For "OCVJ":

m = O - 2 = M

m = C - 2 = A

m = V - 2 = T

m = J - 2 = H

For "KU":

m = K - 2 = I

m = U - 2 = S

For "HWPI!":

m = H - 2 = F

m = W - 2 = U

m = P - 2 = N

m = I - 2 = G

Therefore, the decoded message for "OCVJ KU HWPI!" is "MATHE IS FUN!"

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The value of the angle ∠ABD is found to be 35°.

An angle is a figure in Plane Geometry consisting of two rays or lines that have a common endpoint.

Now, as per the given question;

The ∠ABC comprises of two angles ∠ABD and ∠DBC.

Thus, it can be written as;

∠ABC = ∠ABD + ∠DBC

We have to estimate the value of the angle ∠ABD.

Thus,

Rearranging the angles;

∠ABD = ∠ABC - ∠DBC

The values of angles are given;

∠ABC = 118° and ∠DBC = 83°.

Substituting the values;

∠ABD = 118° - 83°

∠ABD = 35°

Therefore, the value of the is ∠ABD obtained as 35°.

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An equation of the tangent line at point P(-3, -64) is y = 42x + 62.

To find the slope of the curve at the point P(-3, -64), we can differentiate the equation y = -1 - 7x^2 with respect to x to find the derivative.

Let's find the derivative dy/dx:

y = -1 - 7x^2

dy/dx = -14x

Now we can substitute the x-coordinate of point P (-3) into the derivative to find the slope:

slope = dy/dx at x = -3

= -14(-3)

= 42

Therefore, the slope of the curve at point P is 42.

To find an equation of the tangent line at point P, we can use the point-slope form of a line, which is y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line.

Using the slope m = 42 and the point P(-3, -64), we can substitute these values into the equation:

y - (-64) = 42(x - (-3))

y + 64 = 42(x + 3)

y + 64 = 42x + 126

y = 42x + 62

Therefore, an equation of the tangent line at point P(-3, -64) is y = 42x + 62.

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Answer:

x = 78º

y = 35º

Step-by-step explanation:

These are isosceles triangles

two angles are congruent

-----------------------------

x + 51 + 51 = 180

x = 180 - 102

x = 78º

y + y + 110 = 180

2y = 70

y = 35º

Answer:

yes that's possible for example -3-5=-8

Answer:

teri maa ki chut me mera land madarchod sale gand marunga teri

The solution to the given differential equation is y(t) = -1/2e^t + 2te^t + 1/2 + δ(t-2), where δ(t) is the Dirac delta function.

To solve the given differential equation, we will first find the complementary solution, which satisfies the homogeneous equation y'' - 2y' + 5y = 0. Then we will find the particular solution for the inhomogeneous equation y'' - 2y' + 5y = 1 + t + δ(t-2).

Step 1: Finding the complementary solution

The characteristic equation associated with the homogeneous equation is r^2 - 2r + 5 = 0. Solving this quadratic equation, we find two complex conjugate roots: r = 1 ± 2i.

The complementary solution is of the form y_c(t) = e^rt(Acos(2t) + Bsin(2t)), where A and B are constants to be determined using the initial conditions.

Applying the initial conditions y(0) = 0 and y'(0) = 4, we find:

y_c(0) = A = 0 (from y(0) = 0)

y'_c(0) = r(Acos(0) + Bsin(0)) + e^rt(-2Asin(0) + 2Bcos(0)) = 4 (from y'(0) = 4)

Simplifying the above equation, we get:

rA = 4

-2A + rB = 4

Using the values of r = 1 ± 2i, we can solve these equations to find A and B. Solving them, we find A = 0 and B = -2.

Thus, the complementary solution is y_c(t) = -2te^t sin(2t).

Step 2: Finding the particular solution

To find the particular solution, we consider the inhomogeneous term on the right-hand side of the differential equation: 1 + t + δ(t-2).

For the term 1 + t, we assume a particular solution of the form y_p(t) = At + B. Substituting this into the differential equation, we get:

2A - 2A + 5(At + B) = 1 + t

5At + 5B = 1 + t

Matching the coefficients on both sides, we have 5A = 0 and 5B = 1. Solving these equations, we find A = 0 and B = 1/5.

For the term δ(t-2), we assume a particular solution of the form y_p(t) = Ce^t, where C is a constant. Substituting this into the differential equation, we get:

2Ce^t - 2Ce^t + 5Ce^t = 0

The coefficient of e^t on the left-hand side is zero, so there is no contribution from this term.

Therefore, the particular solution is y_p(t) = At + B + δ(t-2). Plugging in the values we found earlier (A = 0, B = 1/5), we have y_p(t) = 1/5 + δ(t-2).

Step 3: Finding the general solution

The general solution is the sum of the complementary and particular solutions:

y(t) = y_c(t) + y_p(t)

y(t) = -2te^t sin(2t) + 1/5 + δ(t-2)

In summary, the solution to the given differential equation is y(t) = -1/2e^t + 2te^t + 1/2 + δ(t-2).

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1. ∠1 and ∠3 are vertically angles

2. ∠8 and ∠7 are Same side interior .

when parallel lines are cut by a transversal line, angle relationships are formed such as corresponding angles, alternate interior angles, alternate exterior angles, linear angles, vertically opposite angles, same side exterior angles, same side interior angles etc.

Therefore, the angles can be established as follows:

Hence,

∠1 and ∠3 are vertically opposite angles.

Vertically opposite angles are congruent.

∠7 and ∠8 are Same side interior angles.

Same side interior angles are supplementary. That means they add up to 180 degrees.

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a. To represent the garden's width, w, in terms of its length, I, we can use the equation: w = 300 - 2I

b. g(l) = l * (300 - 2l) this function gives the area of the rose garden (g) as a function of its length (l)

a. To represent the garden's width, w, in terms of its length, I, we can use the equation:

w = 300 - 2I

The width is equal to the remaining fence length (300 feet) after subtracting twice the length (2I) because the rectangular planter has two equal sides and two equal ends.

b. To define a function g that represents the rose garden's area in terms of its length, l, we can use the equation:

g(l) = l * w

Substituting the expression for the width from part (a), the function becomes:

g(l) = l * (300 - 2l)

This function gives the area of the rose garden (g) as a function of its length (l), taking into account the relationship between length and width.

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complete question is below

A gardener is designing a rectangular planter for a rose garden in front of the administration building on a university campus. The gardener has enough material to build a 300-foot fence to enclose the garden. He also has enough roses to fill a 5,200 square foot planter.

a. Define an expression to represent the garden's width, w, in terms of it length, I.

b. Define a function g to represent the rose garden's area in terms of its length, l.

Answer:

(0,2)

This is extra, but the function would be y = 0.5x + 2.

Step-by-step explanation:

The y-intercept is simply where the function intersects the y-axis. In this, case it's intersecting at (0,2) so that is the answer.

To find the equation for this:

y2 - y1/x2 - x1

6 - 1/8 - (-2)

6 - 1/8 + 2

5/10 = 0.5

y = 0.5x + b

6 = 0.5(8) + b

6 = 4 + b

6-4 = (4-4) + b

2 = b

With that, the equation becomes y = 0.5x + 2

Answer: B) -8

Step-by-step explanation:

We add 12 both sides

Add −18 and 12 to get −6.

Multiply both sides by 3/4 by the reciprocal of 3/4.

Express a -6 x (3/4) as a single fraction.

Multiply −6 and 4 to get −24.

Divide −24 by 3 to get −8.

Answer: Option "2" is correct. ✅