If x + y = 13 and y = 2, then which of the following is true according to the
substitution property?
OA) 2 + y = 13
B) x= 13- y
OC) x+ 2 = 13
OD) y = 13 - x

Answer:

D. The money that Kai started with before he mowed any lawns.

Step-by-step explanation:

We Know

The equation is y = mx + b

The x represents the number of lawns that Kai mows.

What does the y-intercept represent in this equation?

The y-intercept is when the x = 0, meaning the y-intercept is the amount of money he has when mowing 0 lawn. So, the answer is D.

Answer:

The Answer is D

Step-by-step explanation:

Answer:

12.  & 2.5mins

Step-by-step explanation:

2 hours = 120 mins for 48 baguettes.  so 120/48 = 2.5 mins per baguette

30 mins is 1/4 of 2 hours. so 12  baguettes

The boy can wear 720 different outfits to school if he must wear one of each item, we need to find the number of combinations of one pair of pants, one shirt, one tie, and one jacket. The number of different combinations of pants he can wear is 8.

The number of different combinations of shirts he can wear is 5.

The number of different combinations of ties he can wear is 3.

The number of different combinations of jackets he can wear is 6.

To find the total number of different outfits, we multiply the number of combinations of each item:

8 * 5 * 3 * 6 = 8 * 90 = 720

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Answer:

I think $21 or $7.88

Step-by-step explanation:

check it again and there you go

If Mirka is 5 years old, her parents start to give her pocket money of 50p per week , then the amount of pocket money does Mirka get in the first year is £26 .

the amount that Mirka gets per week is = 50p ;

Age of Mirka is = 5 years ;

When Mirka is 5 years old, she starts to receive 50p per week in pocket money. On her birthday, her parents increase her pocket money by 50p.

that means ;

So, for the first year, the pocket money will be 50p per week for 52 weeks (1 year),

Pocket money in the first year = 50p × 52 weeks = £26 .

Therefore , Mirka will get £26 in the first year of her birthday .

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Answer:

Side LM is congruent to side RQ

Angle MNO is congruent to angle RST

Side ON is congruent to side ST

Angle LMN is congruent to angle QRS

Step-by-step explanation:

A way to solve this is to use parchment paper or draw the same shape next to each other, as you will get these:

Side LM is congruent to side RQ

Angle MNO is congruent to angle RST

Side ON is congruent to side ST

Angle LMN is congruent to angle QRS

Answer:

2/3

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Answer:

There are 6 positive divisors of 12: 1, 2, 3, 4, 6, and 12. Of these, 1 and 4 are perfect squares. So the probability of choosing a perfect square divisor of 12 is 2/6, or 1/3.

The two vectors are indeed considered linearly dependent if they are collinear. So the given statement is true about two linear dependent vectors.

The set \(\{v_1, v_2,.....,v_k\}\) is considered as linearly dependent if numbers \(\{x_1, x_2, ....,x_k\}\)are not equal to zero. Then, \(x_1v_1+x_2v_2+.....+x_kv_k=0\). This equation is referred to as the equation of linear dependence or linear dependence relation.

When two vectors are collinear, or when one is a scalar multiple of the other, they are said to be linearly dependent. These collinear vectors are also referred to as parallel vectors and these vectors will lie along the same line or parallel line. The given statement is therefore true.

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when the top is 11 feet above the ground, the foot is moving away from the wall at a rate of 44 ft/s.

at that instant, the angle θ is changing at a rate of -(29/729)sec²(θ) radians per unit of time.

1. A 13-foot ladder is leaning against a wall. If the top slips down the wall at a rate of 4 ft/s, we need to find how fast the foot is moving away from the wall when the top is 11 feet above the ground.

Let's denote the distance of the foot from the wall as x, and the distance of the top from the ground as y. According to the Pythagorean theorem, we have x² + y² = 13².

Differentiating both sides of the equation with respect to time (t), we get:

2x(dx/dt) + 2y(dy/dt) = 0

Given that dy/dt = -4 ft/s (the top is slipping down at a rate of 4 ft/s), and y = 11 ft, we can substitute these values into the equation:

2x(dx/dt) + 2(11)(-4) = 0

2x(dx/dt) - 88 = 0

2x(dx/dt) = 88

dx/dt = 44 ft/s

Therefore, when the top is 11 feet above the ground, the foot is moving away from the wall at a rate of 44 ft/s.

2. A price p (in dollars) and demand x for a product are related by the equation 2x² + 6xp + 50p² = 7000. If the price is increasing at a rate of 2 dollars per month when the price is 10 dollars, we need to find the rate of change of the demand.

Differentiating the equation with respect to time (t), we get:

4x(dx/dt) + 6x(dp/dt) + 6p(dx/dt) + 100p(dp/dt) = 0

Given that dp/dt = 2 dollars per month, and p = 10 dollars, we can substitute these values into the equation:

4x(dx/dt) + 6x(2) + 6(10)(dx/dt) + 100(10)(2) = 0

4x(dx/dt) + 12x + 60(dx/dt) + 2000 = 0

(4x + 60)(dx/dt) + 12x + 2000 = 0

dx/dt = -(12x + 2000)/(4x + 60)

To find the rate of change of the demand, we need to substitute the given value of x (demand) into the expression for dx/dt.

3. In the right triangle, let's denote the acute angle as θ, and the side adjacent to θ as x, and the side opposite θ as y. We are given that at a certain instant, x = 9 units and is increasing at 4 units/s, while y = 7 units and is decreasing at 1/81 units/s.

Using the trigonometric relationship, we have tan(θ) = y/x.

Differentiating both sides of the equation with respect to time (t), we get:

sec²(θ)(dθ/dt) = (1/x)(dy/dt) - (y/x²)(dx/dt)

Given that x = 9 units, dx/dt = 4 units/s, y = 7 units, and dy/dt = -1/81 units/s, we can substitute these values into the equation:

sec²(θ)(dθ/dt) = (1/9)(-1/81) - (7/81)(4/9)

sec²(θ)(dθ/dt) = -1/729 - 28/729

sec²(θ)(dθ/dt) = -29/729

dθ/dt = -(29/729)sec²(θ)

Therefore, at that instant, the angle θ is changing at a rate of -(29/729)sec²(θ) radians per unit of time.

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The addition of the polynomial \(x^{3}+3xy-2xy^{2} +y^{3}\) with \(2x^{3}-5x^{2} y-3xy^{2}-2y^{3}\) is  \(3x^{3}+3xy-5x^{2} y-5xy^{2}-y^{3}\).

What is a polynomial?

⇒ A polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

⇒ In the addition of polynomials, the like terms are added while in subtraction, the like terms are subtracted.

Calculation;

We have been given two polynomial which we have to add   \(x^{3}+3xy-2xy^{2} +y^{3}\) and \(2x^{3}-5x^{2} y-3xy^{2}-2y^{3}\)

The sign after addition or subtraction will always be of the variable having more value.

\((x^{3}+3xy-2xy^{2} +y^{3} )+(2x^{3}-5x^{2} y-3xy^{2}-2y^{3})\)

On adding like terms with each other

⇒ \((x^{3} +2x^{3})+ 3xy-5x^{2} y-(2xy^{2}+3xy^{2})+(y^{3}-2x^{3})\)

⇒ \(3x^{3}+3xy-5x^{2} y-5xy^{2}-y^{3}\)

Hence the addition of the polynomial\(x^{3}+3xy-2xy^{2} +y^{3}\) and \(2x^{3}-5x^{2} y-3xy^{2}-2y^{3}\) is \(3x^{3}+3xy-5x^{2} y-5xy^{2}-y^{3}\).

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Answer:

it must be 21

Step-by-step explanation:

I have very fast I think giving test just thank the answer after test mark me brainliest

Answer:

105

Step-by-step explanation:

1,000 divided by 3.5% is 35

35 x 3 is 105

Since you are just asking for just the interest and not the total the answer is 105

The interest that Amy should pay is $105.

Given that,

Based on the above information, the calculation is as follows:

\(= 1000 \times 3.5\% \times 3\)

= 105

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The slope and intercept of the line are -2 and 0. The equation of the line is y = -2x

To find the equation of line, we have to find the slope of the equation and its y-intercept.

The slope of a line can be calculated as

\(m = \frac{y_2 - y_1}{x_2 - x_1} \\m = \frac{-4 - (-4)}{6 - 2}\\m = \frac{-8}{4} \\m = -2\)

The slope of the line is equal to -2.

Lets find the intercept of the line;

The line of an equation is given as

\(y = mx + c\)

We can pick point A and substitute its values to find c

\(y = mx + c\\- 4 = -2(2) + c\\-4 = -4 + c\\c = -4 + 4\\c = 0\)

The equation of the line is y = -2x

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The instantaneous rate of change of g(x) with respect to x at x = 9 is 4.To find the derivative of the function g(x) at x = 9, denoted as g'(9), we can use the equation of the tangent line given as f'(9) = 4.

The derivative of a function represents its rate of change at a specific point. In this case, the derivative g'(x) at x = 9 is given as 4, which means that at that point, the function g(x) has a slope of 4. The tangent line to the graph of g(x) at (9,32) has this slope of 4, indicating the instantaneous rate of change of g(x) with respect to x at x = 9.

This means that for a small change in x around x = 9, the corresponding change in g(x) is approximately 4 times that of x. Thus, the instantaneous rate of change of g(x) with respect to x at x = 9 is 4, indicating how quickly g(x) is changing at that particular point.

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Answer:

Let the number be x

5 is subtracted from a certain number means it will be x - 5

The result is multiplied by 7, the final result is 63,

7 (x - 5) = 63

7x - 35 = 63

7x = 63 + 35

7x = 98

x = 98/7

x = 14

The number is 14

Answer the number is 14 and the equation is 7 (x - 5) = 63

Step-by-step explanation:

Using the appropriate arithmetic operation, the value of the original number is 4

Let the number be : p

5 added to p :

Multiply the addition by 7 :

We can solve for p thus :

15 + 3p = 27

3p = 27 - 15

3p = 12

p = 12/3

p = 4

Therefore, the original number is 4.

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Answer:

1/3

Step-by-step explanation:

Answer: 1/8 of the square

Step-by-step explanation:

For the given matrix A, the minors M13, M23, M33 are 8, -4, and 10 respectively. The cofactors C13, C23, C33 are 8, 4, and 10 respectively. The determinant det(A) is 68.

To find the minors of a matrix, we need to find the determinants of the submatrices obtained by removing the row and column corresponding to the element of interest. In this case, the minors M13, M23, and M33 correspond to the determinants of the 2x2 submatrices obtained by removing the first row and the third column, second row and third column, and third row and third column, respectively.

To find the cofactors, we multiply each minor by a positive or negative sign based on its position in the matrix. The signs alternate starting with a positive sign for the top left element. In this case, the cofactors C13, C23, and C33 correspond to the minors M13, M23, and M33 respectively.

Finally, the determinant of a 3x3 matrix can be found by using the formula det(A) = a11C11 + a12C12 + a13C13, where a11, a12, and a13 are the elements of the first row of the matrix and C11, C12, and C13 are their corresponding cofactors. In this case, the determinant det(A) is 68.

Therefore, the minors M13, M23, M33 are 8, -4, and 10 respectively. The cofactors C13, C23, C33 are 8, 4, and 10 respectively. And the determinant det(A) is 68.

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Answer: (3,-2)

Step-by-step explanation: We're reflecting to the y-axis, thus, we're going to reflect to the right.

(-x,-y) ⇒ (x,-y)

Our current coordinate is (-3,-2)...let's convert it now...

(3,-2)

I hope this helps!

Answer:

(3, -2).

Step-by-step explanation:

When you reflect across the y axis the y coordinate stays the same and the x axis changes sign : (x, y) --> (-x, y).

So B (-3, -2) --> (3, -2).

The correct answer is B) Beliefs

Explanation:

Pseudoscience differs from science because this is based on personal beliefs or non-proven statements. For example, disciplines such as Astrology or Numerology are considered pseudoscience because these cannot be proven scientifically, are not based in facts or reality, and in general, do not follow the standards of science. This means one component of pseudoscience is that this is based on personal beliefs as pseudosciences do not follow the scientific method but this does not occur in science.

The correct answer is B) Beliefs

Explanation:

Pseudoscience differs from science because this is based on personal beliefs or non-proven statements. For example, disciplines such as Astrology or Numerology are considered pseudoscience because these cannot be proven scientifically, are not based in facts or reality, and in general, do not follow the standards of science. This means one component of pseudoscience is that this is based on personal beliefs as pseudosciences do not follow the scientific method but this does not occur in science.

Answer:

That's incredible.  I have that exact problem on my website.

Here is my explanation.

My website says probability = 0.131944444444445

https://www.1728.org/occupncy8.htm

Step-by-step explanation:

Answer:

second number = - 28

Step-by-step explanation:

let the first number be x and the second number y , then

x + y = - 18 , that is

10 + y = - 18 ( subtract 10 from both sides )

y = - 28 , that is

the second number is - 28

Answer:

Step-by-step explanation:

The equation that represents the situation is -28 + 10 = -18

The second number is -28.

Answer:

the answer shows in the picture, sorry, I tried to type it but it would come out different.

Step-by-step explanation:

10,000 = 10x10x10x10 = 10 4. Notice that the exponent of the ten is simply the number of the zeros.

Hope this helped:)

The large number 10,000 written as a power of 10 as 10⁴.

The given large number is 10000.

Scientific notation is a method for expressing a given quantity as a number having significant digits necessary for a specified degree of accuracy, multiplied by 10 to the appropriate power such as 1.56×10⁷.

Here, the number 10000 can be written as 10⁴.

Therefore, the number 10,000 written as a power of 10 as 10⁴.

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Answer: the answer is B—>165.89

Try all numbers 9-13 ( including 9 and 13 ) multiplies by 14.99

When you multiply 11x14.99 it equals 164.89 not 165.89 meaning B is wrong

how is Ur m kids us she goid

Answer:

the answer is 'a' and 'e'

Answer:

pog

Step-by-step explanation:

Poggers