the expression -7y is called what

Answer:

hope this helps :)

Step-by-step explanation:

Wave interference that results in greater wave amplitude is called Constructive interference.

What is Wave Interference?

Wave interference is a physical phenomena that occurs when two waves collide while traveling through the same medium. Waves interact in two ways.

a) Constructive Interference - In this case, the two waves cancel each other out because their amplitudes are equal and opposite.

b) Destructive Interference - This occurs when two waves add to each other as they travel in the same direction, resulting in a wave with a longer wavelength.

It is Constructive interference.

Therefore, Wave interference that results in greater wave amplitude is called Constructive interference.

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Answer:

x=27

Step-by-step explanation:

the attached photo might help you

Answer:

5 and 6.

Step-by-step explanation:

5^2 = 25 and 6^2= 36

As we know, 32 is between 25 and 36, therefore √32 is between √25 and √36.

Answer:

a. C(x(h)) = 600h + 500

b. C(8) = 5,300

c. See below.

Step-by-step explanation:

a. C(x(h)) = C(30h) = 20(30h) + 500 = 600h + 500

b. C(8) = 600(8) + 500 = 5,300

c. 5,300 is the cost of making the number of shovels that can be made in 8 hours.

Answer:

Step-by-step explanation:

It is actually easier to ignore the left side for now, and work with the right side. The secant function can be represented in terms of cosine by putting a one over cosine. This relation below should be known:

\(sec(x)=\frac{1}{cos(x)}\)

So, if we replace the secants on the right with the above relation, you can make the right side in terms completely of cosine.

\(\frac{1-cos(x)}{1+cos(x)} =\frac{\frac{1}{cos(x)}-1 }{\frac{1}{cos(x)} +1}\)

I hope that's clear to see. Brainly equations are pretty small and blurry.

The next step is to get a common denominator for the right side. The term '1' is equivalent to cos(x)/cos(x). So we have the following:

\(\frac{1-cos(x)}{1+cos(x)} =\frac{\frac{1}{cos(x)}-\frac{cos(x)}{cos(x)} }{\frac{1}{cos(x)} +\frac{cos(x)}{cos(x)} }\)

Looks rather complex, but it simplifies everything by a lot. Combine it into one single fraction:

\(\frac{1-cos(x)}{1+cos(x)} =\frac{\frac{1-cos(x)}{cos(x)} }{\frac{1+cos(x)}{cos(x)} }\)

When you divide by a fraction, it is equivalent to multiplying by the reciprocal. This is an algebra 1 concept, so it should be familiar:

\(\frac{1-cos(x)}{1+cos(x)} =\frac{1-cos(x)}{cos(x)}*\frac{cos(x)}{1+cos(x)}\)

As you can see, the cos(x)'s will cancel, leaving:

\(\frac{1-cos(x)}{1+cos(x)} =\frac{1-cos(x)}{1+cos(x)}\)

QED

The equation of the quadratic graph plotted is given by

C y = -0.32(x - 50)² + 800

Quadratic equation has the standard vertex form of the equation written as

y = a(x - h)² + k

The vertex is the point of the maximum altitude given as

v (h, k) = (50, 800)

h = 50 feet for x direction

k =  800 feet for y  direction

substitution of the values into the equation gives

y = a(x - 50)² + 800

the graph passed through the origin (0, 0) we solve for "a" by

y = a(x - 50)² + 800

0 = a(0 - 50)² + 800

-800 = a(- 50)²

a = -800 / (50)²

a = -0.32

substituting the value of a into the equation

y = -0.32(x - 50)² + 800

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Answer:-12x

Step-by-step explanation:

just trust me on this

I believe your answer should be: (A) (x+1)^2=4

Answer:

a) is the correct answer

Step-by-step explanation:

When we expand a) we get

x^2+2x+1=4

Subtracting 4 on both sides we get x^2+2x+1-4=0

x^2+2x-3=0

The inequality for the possible values of w are;  w >  2l.

We know that the sum of length of the sides used to made the given figure.

We are given that perimeter of the rectangle > perimeter of the triangle

Let the dimension of the rectangle be w as width and L as length

Then perimeter of the rectangle = 2(L + w)

Now let the side of triangle be w then;

The perimeter of the triangle = 3w

The inequality becomes as;

2(L + w) > 3w

2w + 2L > 3w

w + 2l> 0

w >  2l

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The area of the triangle is expressed as 2.718cm²

The formula for calculating the area of a triangle is expressed as:

A = 0.5absinФ

Given the following

Substitute the given parameters to have:

Area = 0.5(2.5)(2.3)sin71

Area = 2.718cm²

Hence the area of the triangle is expressed as 2.718cm²

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0.688 will be the probability of getting a nickel from the jar.

Given,

Probability;-

Simply put, probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of several outcomes. Statistics is the study of events that follow a probability distribution.

Here,

The number of fortunate situations divided by the total number of coins would be the product between the probability of each occurrence and the likelihood of each event.

Therefore,

P(nickel) = 19/69

P(penny) = 17/68

That is,

P = 19/69 × 17/68

P = 323/4692

P = 0.0688

That is,

The probability of getting nickel from the jar is 0.06888

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Thus, the required decimal PMT is $278.09, which is obtained by substituting the given values in the Present Value of Annuity formula.

The given problem can be solved by using the formula of Present Value of an Annuity (PVA).

The formula is:

PMT = PVA(i,n) / (1 - (1 + i) ^ -n)

The given values are:

PV = $23,230n = 106i = 0.01PMT = ?

We need to calculate PMT.

Present Value of Annuity formula:

PV = PMT [ (1 - (1 + i) ^ -n ) / i ]

Now, we will substitute the given values in the formula and find the value of PMT.

PMT = $23,230 / [ (1 - (1 + 0.01) ^ -106 ) / 0.01 ]

PMT = $23,230 / [ (1 - (1.01) ^ -106 ) / 0.01 ]

PMT = $23,230 / [ (1 - 0.164206) / 0.01 ]

PMT = $23,230 / [ 0.835794 / 0.01 ]

PMT = $23,230 / 83.5794

PMT = $278.09

Therefore,

PMT= $278.09 (approx.)

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Answer:

y8x122

Step-by-step explanation:

Simplify this expression.

Answer:

7.a) 5

7.b) 1/2

8. 1

Step-by-step explanation:

7.

a)

Read the points on the graph (0, 0) and (1, 5).

slope = (5 - 0)/(1 - 0) = 5/1 = 5

b)

read the points on the graph (0, 0) and (4, 2).

slope = (2 - 0)/(4 - 0) = 2/4 = 1/2

8.

Points (1, 4) and (5, 8)

slope = (8 - 4)/(5 - 1) = 4/4 = 1

Answer: 9

Step-by-step explanation:

Answer: 9

Step-by-step explanation:

Plug 3 in for x

f(3)=2(3)+3

f(3)=6+3

f(3)=9

Answer:

3 whole pizzas left

Step by step explanation:

well if the quest take 2 out of every 5 wholes then u would be left with 3

                                    5                     5                                                          5

so u add then together and get \(3\\ 5\) and add that 5 times

so u would get \(15\\ 5\) and if u simplify u would have 3 whole pizzas left

:)

The answer of the given question based on the commutative property is ,  choice B: c + (a + b).

The commutative property is a fundamental property of some mathematical operations, which states that the order of the operands (inputs) can be changed without affecting the result. In other words, the commutative property means that the operation is independent of the order in which the operands are presented.

The commutative property of addition states that the order of the addends can be changed without changing the sum. In other words, a + b = b + a.

Using this property, we can rearrange the terms in the equation (a + b) + c = A to get:

c + (a + b) = A

This is the same as choice B: c + (a + b). Therefore, the choice that illustrates the commutative property for (a + b) + c is B.

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The linear speed of the Ferris wheel can be determined by calculating the circumference of the wheel and dividing it by the time it takes for one revolution. In this case, the linear speed of the Ferris wheel is 2π × 30 / 60 = π ft/s.

The linear speed of an object is the distance traveled per unit of time. For a circular motion, such as the Ferris wheel, the linear speed is related to the circumference of the circle.

The circumference of a circle is given by the formula C = 2πr, where r is the radius of the circle. In this case, the radius of the Ferris wheel is 30 feet, so its circumference is 2π × 30 = 60π feet.

The time it takes for one revolution of the Ferris wheel is given as 60 seconds.

To find the linear speed, we divide the circumference by the time taken for one revolution. Therefore, the linear speed is (60π feet) / (60 seconds) = π ft/s.

Thus, the linear speed of the Ferris wheel is π ft/s.

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1.The beginning balance should be $4,000

2.The amount to be adjusted is $2554

3.The ending balance of the account after the adjustment $2554

4. Office Supplies Account is $14846

"Information available from the question"

The Office Supplies account started the year with a $4,000 debit balance

The company purchased supplies for $13,400,

The inventory of supplies available at the end of the year totaled $2,554.

Now, According to the question:

1. The beginning balance should be $4,000

2.The adjusted amount is

Opening balance = 4000

Add: New purchases = 13400

Balance after Purchase = 17400

Less: Year end balance = 2554

3. The ending balance is $2,554

4. The adjusting journal entry is

Dr. Supplies Expense Account is 14846

Adjustment in the year = Cr. 14846 (subtracted from the balance)

Office Supplies Account is 14846

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Answer:

\(|u*v|=\sqrt{14}\)

Step-by-step explanation:

From the question we are told that:

Two vectors

x=i-j+ k

y= 3i +2k

Generally the equation for Matrix of the Parallelogram is mathematically given by

 \(x*y=\)\(\begin{vmatrix}i & j & k\\1 & 1 & 1\\3 & 0 & 2 \end{vmatrix}\)

 \(x*y=i(2-0)-j(2-3)+k(0-3)\)

 \(x*y=2i+j-3k\)

Generally the magnitude of x*y is mathematically given as

 \(|u*v|=|2i+j-3k|\)

 \(|u*v|=\sqrt{2^2+1^2+(-3)^2}\)

 \(|u*v|=\sqrt{14}\)

Answer:

D

Step-by-step explanation:

using the rule of logarithms

log \(x^{n}\) = n logx

given

2(\(5^{x}\)) = 14 ( divide both sides by 2 )

\(5^{x}\) = 7 ( take log of both sides )

log \(5^{x}\) = log7 , then

xlog5 = log7 ( divide both sides by log5 )

x = \(\frac{log7}{log5}\)

A stochastic process X(t) is called a martingale if the expected value of X(t) given all information available up to and including time s is equal to the value of X(s).

Thus, to show that the process X(t):=e^(t/2)cos(W(t)), 0 ≤ t ≤ T is a martingale w.r.t. any filtration for Brownian motion, we need to prove that E(X(t)|F_s) = X(s), where F_s is the sigma-algebra of all events up to time s.

As X(t) is of the form e^(t/2)cos(W(t)), we can use Itô's lemma to obtain the differential form:dX = e^(t/2)cos(W(t))dW - 1/2 e^(t/2)sin(W(t))dt

Taking the expectation on both sides of this equation gives:E(dX) = E(e^(t/2)cos(W(t))dW) - 1/2 E(e^(t/2)sin(W(t))dt)Now, as E(dW) = 0 and E(dW^2) = dt, the first term of the right-hand side vanishes.

For the second term, we can use the fact that sin(W(t)) is independent of F_s and therefore can be taken outside the conditional expectation:

E(dX) = - 1/2 E(e^(t/2)sin(W(t)))dt = 0Since dX is zero-mean, it follows that X(t) is a martingale w.r.t. any filtration for Brownian motion.

Now, let's represent X(t) as an Itô process on the interval [0,T]. Applying Itô's lemma to X(t) gives:

dX = e^(t/2)cos(W(t))dW - 1/2 e^(t/2)sin(W(t))dt= dM + 1/2 e^(t/2)sin(W(t))dt

where M is a martingale with M(0) = 0.

Thus, X(t) can be represented as an Itô process on [0,T] of the form:

X(t) = M(t) + ∫₀ᵗ 1/2 e^(s/2)sin(W(s))ds

Hence, we have shown that X(t) is a martingale w.r.t. any filtration for Brownian motion and represented it as an Itô process on any time interval [0,T], T > 0.

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Answer:

44

Step-by-step explanation:

i think its right

Answer:

II and III only

Step-by-step explanation:

The effective rate charged by the bank for Sam Peters' $3,200 note with a 9% discount rate and a 10-month term is approximately 9.7%.

To calculate the effective rate charged by the bank, we need to consider the discount rate and the length of time for which the note is held. In this case, the discount rate is 9% and the note is held for 10 months.

The effective rate takes into account the discount applied to the face value of the note and the time period involved. It represents the true cost of borrowing or the actual interest rate charged by the bank.

Using the formula for the effective rate, we can calculate it as follows:

Effective Rate = (Discount / Face Value) x (12 / Time)

Plugging in the values, we get:

Effective Rate = (9% / $3,200) x (12 / 10) = 0.009 x 1.2 = 0.0108

Converting the decimal to a percentage, we find that the effective rate charged by the bank is approximately 1.08%. Rounded to the nearest tenth of a percent, the effective rate is 9.7%.

Therefore, the correct answer is 9.7%.

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Answer:

x=6

Step-by-step explanation:

When you have 7x+5=5x+17, you try to get the variables on one side and the constants on the other. Subtract 5x from the right and from the left: 2x+5=17. Next, subtract 5 from the left and from the right: 2x=12. The last step is to get rid of the coefficient of x and to do that divide it by the coefficient(in this case divide both sides by 2). After dividing 2x and 12 by 2 you get x=6.

Answer:

5.84

Step-by-step explanation:

She has two shirts and their 23.99 each

23.99 x 2 = 47.98

Then she has a pair shoes that cost 41.99

Add

47.98 + 41.99 = 89.97

6.5% = 0.065

89.97 x 0.065 = 5.84

Answer:

14 units^2

Step-by-step explanation:

Hey there!

In order to find the area of this triangle, we need to find the base and height of the triangle

the base of the triangle is 7 units long and the height of the triangle is 4 units high

Formula for area of triangle: Base x Height x 1/2

7 x 4 x 1/2 --> 28 x 1/2 --> 14

So, the area of this triangle is 14

Now the question is asking to find the area by forming a parallelogram

All you have to do for this is duplicate that same triangle, and mirror it upside down

Then all you would have to do is find the Base and the Height and multiply them together