18 = 3b

solve for 3b (30 points)

The required functions after transformations are y = -4(x+4)+5, y = (x-o)/14, y = -x+4

A transformation is a process that manipulates a polygon or other two-dimensional object on a plane or coordinate system.

Given that, the equation for the parent linear value function, f(x)=x, that has been transformed by,

a) Reflecting across the -axis, vertical stretch by a scale factor 4, and a translation of 4 units up and 5 units left :-

Rule for reflection across x-axis = y = f(x) → y = -f(x)

After reflection,

f(x) = -x

And there is a vertical stretch by a scale factor 4, and a translation of 4 units up and 5 units left

f(x) = -4(x+4)+5

Therefore, the function will be f(x) = -4(x+4)+5

b) Vertical shrink by a scale factor of 14 and a horizontal shift O units right.

For vertical shrink = f(x)/14 = x/14

For horizontal shift = (x-o)/14

Therefore, the function will be f(x) = (x-o)/14

c) Reflection in the x-axis, a vertical shift of 4 units up and a horizontal shift 7 units left.

Rule for reflection across x-axis = y = f(x) → y = -f(x)

f(x) = -x

For a vertical shift of 4 units up and a horizontal shift 7 units left =

f(x) = (-x-7)+4

Hence, The required functions after transformations are y = -4(x+4)+5, y = (x-o)/14, y = -x+4

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Answer:

k=1    k= -1

Step-by-step explanation:

hello :

here is an solution

Answer:

The potential energy (PE) of an object is given by:

PE = mgh

where m is the mass of the object, g is the acceleration due to gravity (9.8 m/s² near the Earth's surface), and h is the height of the object above a reference level.

In this case, the mass of the clam is 0.11 kg, the height above the beach is 11.5 m, and the acceleration due to gravity is 9.8 m/s². Therefore, the potential energy of the clam is:

PE = (0.11 kg) × (9.8 m/s²) × (11.5 m) ≈ 12.7 J

So the potential energy of the clam is approximately 12.7 Joules.

Van 't Hoff's law, also known as the law of osmotic pressure, states that the magnitude of the osmotic pressure is directly proportional to the concentration of solute particles in a solution at a given temperature.

Van 't Hoff's law is an important concept in chemistry and thermodynamics. It explains the relationship between osmotic pressure and the concentration of solute particles in a solution. According to the law, the osmotic pressure of a solution is directly proportional to the number of solute particles in the solution, regardless of the type of solute. This means that if the concentration of solute particles in a solution increases, the osmotic pressure also increases, and vice versa. This law has numerous applications, particularly in the field of biology, where it is used to explain the movement of water and nutrients in and out of cells. For example, when a plant cell is placed in a hypertonic solution, water moves out of the cell, causing it to shrink. On the other hand, when a plant cell is placed in a hypotonic solution, water moves into the cell, causing it to expand. Understanding Van 't Hoff's law is therefore critical in many fields of science, particularly in biology, chemistry, and chemical engineering.

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Answer:

  (-3, 5), (-1, -1), (5, -3)

Step-by-step explanation:

Each pair of vertices can be one of the diagonals. Then the missing point will be found at the coordinates that are the sum of those, less the coordinates of the third point.

Given points are ...

  A(-2, 2), B(1, 1), C(2, -2)

For AB a diagonal, D1 is ...

  A+B-C = (-2+1-2, 2+1-(-2)) = (-3, 5)

For AC a diagonal, D2 is ...

  A+C-B = (-2+2-1, 2-2-1) = (-1, -1)

For BC a diagonal, D3 is ...

  B+C-A = (1+2-(-2), 1-2-2) = (5, -3)

_____

For a lot of parallelogram problems I find it easiest to work with the fact that the diagonals bisect each other. This means they both have the same midpoint, so for quadrilateral ABCD, we have (A+C)/2 = (B+D)/2. Multiplying this by 2 gives the equation we used above, A+C = B+D, so D=A+C-B. Remember, in ABCD, AC and BD are the diagonals.

Answer:

Answer:

 (-3, 5), (-1, -1), (5, -3)

Step-by-step explanation:

Each pair of vertices can be one of the diagonals. Then the missing point will be found at the coordinates that are the sum of those, less the coordinates of the third point.

Given points are ...

 A(-2, 2), B(1, 1), C(2, -2)

For AB a diagonal, D1 is ...

 A+B-C = (-2+1-2, 2+1-(-2)) = (-3, 5)

For AC a diagonal, D2 is ...

 A+C-B = (-2+2-1, 2-2-1) = (-1, -1)

For BC a diagonal, D3 is ...

 B+C-A = (1+2-(-2), 1-2-2) = (5, -3)

_____

For a lot of parallelogram problems I find it easiest to work with the fact that the diagonals bisect each other. This means they both have the same midpoint, so for quadrilateral ABCD, we have (A+C)/2 = (B+D)/2. Multiplying this by 2 gives the equation we used above, A+C = B+D, so D=A+C-B. Remember, in ABCD, AC and BD are the diagonals.

Thanks for everything have a good day

Answer:

Step-by-step explanation:

Hope this helps

if its wrong i´m sorry i got my answer from math.way

Answer:

i think its $0.20

Step-by-step explanation:

 12                 1

------      =   ---------

 2.49          0.20

1 egg = $0.20

Answer:

1.5x = 6

Step-by-step explanation:

This represents 1.5 times the amounts a bucket holds. (I'm assuming you mean x when you typed z)

Diagrams make explanations a lot easier so I created one, see bottom for the picture.

As GHF are all midpoints, that means the lines that connect them are half of the opposite sides.

CD = 2HF

DE = 2GF

CE = 2GH

As HF is 2x CD, and CD = 24:

HF = CD ÷ 2

HF = 24 ÷ 2 = 12

As DE = 2x GF and DF is 9:

DE = 2 x 9

DE = 18

As CE = 2x GH and GH = 7:

CE = 2 x 7

CE = 14

Hope this helps!

The Values of (a+b)ab are undefined.

Given that, a = 3an and db = -2We need to find the values of (a+b)

Now, we have a = 3an... equation (1)Also, we have db = -2... equation (2)From equation (1), we get: n = 1/3... equation (3)Putting equation (3) in equation (1), we get: a = a/3a = 3... equation (4)Now, putting equation (4) in equation (1), we get: a = 3an... 3 = 3(1/3)n = 1

From equation (2), we have: db = -2=> d = -2/b... equation (5)Multiplying equation (1) and equation (2), we get: a*db = 3an * -2=> ab = -6n... equation (6)Putting values of n and a in equation (6), we get: ab = -6*1=> ab = -6... equation (7)Now, we need to find the value of (a+b).For this, we add equations (1) and (5),

we get a + d = 3an - 2/b=> a + (-2/b) = 3a(1) - 2/b=> a - 3a + 2/b = -2/b=> -2a + 2/b = -2/b=> -2a = 0=> a = 0From equation (1), we have a = 3an=> 0 = 3(1/3)n=> n = 0

Therefore, from equation (5), we have:d = -2/b=> 0 = -2/b=> b = ∞Now, we know that (a+b)ab = (0+∞)(0*∞) = undefined

Therefore, the values of (a+b)ab are undefined.

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Answer:

i think its 10.5

Step-by-step explanation:

Answer:

David was 32 two years ago

Step-by-step explanation:

D = 2H + 4

H = 15

D = 30+4

D = 34

David was 32 two years ago

Answer:

err B? since it's the cheapest. usually with unit rate prices there should be a quantity but since there isn't just choose the lowest price

The probability of getting a difference in sample means xF − xM of at least 1 minute is 0.1160 or 11.60%.

To find the probability of getting a difference in sample means xF − xM, we need to use the Central Limit Theorem.

For the female students, the sample mean running time x¯f follows a normal distribution with a mean of 8.8 minutes and a standard deviation of 3.3 minutes divided by the square root of 8 (since we are selecting 8 students). Similarly, for the male students, the sample mean running time x¯m follows a normal distribution with a mean of 7.3 minutes and a standard deviation of 2.9 minutes divided by the square root of 8.

Now, we need to find the difference in sample means xF − xM or we want to find the probability of getting a difference of at least 1 minute between the sample means of the two populations.

Using the formula for the difference in sample means, we have:

xF − xM = 8.8 - 7.3 = 1.5

The standard deviation of the difference in sample means is the square root of the sum of the variances of the two populations, which is:

sqrt[(3.3^2/8) + (2.9^2/8)] = 1.255

The z-score for a difference of 1.5 minutes is:

z = (1.5 - 0) / 1.255 = 1.195

Using a standard normal table or a calculator, we can find that the probability of getting a z-score of 1.195 or greater is approximately 0.1160.

Therefore, the probability of getting a difference in sample means xF − xM of at least 1 minute is 0.1160 or 11.60%.

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Answer:

15 1/8 cups of oatmeal will be used

Step-by-step explanation:

Firstly, we shall be calculating the total number of dozens of muffin made

That would be the addition of the dozens of muffin made for the family reunion and that made for the club meeting = 3 + 2 1/2 = 5 1/2 or simply 5.5 dozens

Now, from the question initially, 2 3/4 or simply 2.75 cups of oatmeal makes 1 dozen muffins

x cups of oatmeal = 5.5 dozens of muffin

x * 1 = 2.75 * 5.5

x = 15.125 cups of oatmeal or simply 15 1/8 cups of oatmeal

The probability of getting at least one head is 15/16.

What is probability?

The ratio of positive outcomes to all possible outcomes of an event is known as the probability.

Formula for probability = favourable outcomes/ total outcomes

Main body:

if 4 coins are tossed , total no. of outcomes = 2⁴ = 16

In a toss there are 2 outcomes T or H

so, Probability of getting Head = 1/2

The probability of getting at least 1 head = 1- probability of getting no heads

⇒1 - Probability of getting tail in 4 tosses

⇒ 1 - (1/2)⁴

⇒ 1 - 1/16

⇒ 15/16

So the probability of getting at least one head is 15/16.

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Answer:

D or J = 600

Step-by-step explanation:

It's hard to explain, but yeah.

Can I have brainliest?

The solution to the ODE (8) is:

y = ln|sec(x) + tan(x)| / sec(x) + C * sec(x), where C is a constant.

To solve the first-order linear ODEs, we'll apply the method of integrating factors.

(7) dy/dx = -2y + 2xe^(-2x)

Step 1: Identify the coefficients

In this equation, the coefficient of y is -2, and there is no coefficient of dy/dx.

Step 2: Find the integrating factor

The integrating factor (IF) is given by the exponential of the integral of the coefficient of y with respect to x. In this case, the IF is e^(∫(-2)dx) = e^(-2x).

Step 3: Multiply the ODE by the integrating factor

Multiplying both sides of the equation by the integrating factor, we get:

e^(-2x) * dy/dx + 2e^(-2x) * y = 2xe^(-4x)

Step 4: Simplify and integrate

The left side of the equation can be rewritten using the product rule:

d/dx (e^(-2x) * y) = 2xe^(-4x)

Integrating both sides with respect to x, we obtain:

e^(-2x) * y = ∫(2xe^(-4x))dx = -1/2 * e^(-4x) + C

Step 5: Solve for y

To solve for y, we divide both sides of the equation by e^(-2x):

y = -1/2 * e^(-2x) + Ce^(2x)

Therefore, the solution to the ODE (7) is:

y = -1/2 * e^(-2x) + Ce^(2x), where C is a constant.

Now let's solve the second ODE.

(8) dy/dx + y * tan(x) = sin(x)

This is a linear ODE in standard form. We'll apply the integrating factor method again.

Step 1: Identify the coefficients

The coefficient of y is tan(x), and there is no coefficient of dy/dx.

Step 2: Find the integrating factor

The integrating factor (IF) is e^(∫tan(x)dx). The integral of tan(x) with respect to x is ln|sec(x)|. Therefore, the IF is e^(ln|sec(x)|) = sec(x).

Step 3: Multiply the ODE by the integrating factor

Multiplying both sides of the equation by the integrating factor, we get:

sec(x) * dy/dx + y * sec(x) * tan(x) = sin(x) * sec(x)

Step 4: Simplify and integrate

The left side of the equation can be rewritten using the product rule:

d/dx (y * sec(x)) = sin(x) * sec(x)

Integrating both sides with respect to x, we obtain:

y * sec(x) = ∫(sin(x) * sec(x))dx = ln|sec(x) + tan(x)| + C

Step 5: Solve for y

To solve for y, we divide both sides of the equation by sec(x):

y = ln|sec(x) + tan(x)| / sec(x) + C * sec(x)

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The probability that at least 91% of 100 randomly sampled 18-29-year-olds use social networking sites can be calculated using a normal distribution table as follows: P(Z > 0.67) = 0.2514 Therefore, the probability is 0.2514.

a. Each of the conditions needed to use the sampling distribution of a proportion for a sample size of 100 are as follows:

A random sample is taken from the population. The sample size, n = 100, is large enough to ensure that there are at least 10 successes and 10 failures. The observations are independent of each other.

b. For calculating the probability that at least 91% of 100 randomly sampled 18-29-year-olds use social networking sites, we will use the normal distribution with the following mean and standard deviation: Mean, µ = np = 100 × 0.89 = 89

Standard deviation, σ = √npq = √[100 × 0.89 × 0.11] = 2.97

The z-score is calculated as follows: z = (x - µ) / σz = (91 - 89) / 2.97 = 0.67

The probability that at least 91% of 100 randomly sampled 18-29-year-olds use social networking sites can be calculated using a normal distribution table as follows: P(Z > 0.67) = 0.2514 Therefore, the probability is 0.2514.

A normal distribution with a mean of 89 and standard deviation of 2.97 is shown below: Distribution Image

c. For calculating the probability that at least 91% of 500 randomly sampled 18-29-year-olds use social networking sites, we will use the normal distribution with the following mean and standard deviation:

Mean, µ = np = 500 × 0.89 = 445Standard deviation, σ = √npq = √[500 × 0.89 × 0.11] = 6.64

The z-score is calculated as follows: z = (x - µ) / σz = (91 - 89) / 6.64 = 0.3012

The probability that at least 91% of 500 randomly sampled 18-29-year-olds use social networking sites can be calculated using a normal distribution table as follows: P(Z > 0.3012) = 0.3814 Therefore, the probability is 0.3814.

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The standard deviation of the total sales per day for the shoe store is approximately $1743.28.

To find the standard deviation of the total sales per day for the shoe store, we need to first find the mean and variance of the total sales.

The number of customers visiting the store follows a Poisson distribution with a rate of 70 per day. Let X be the number of customers per day, then X ~ Poisson(70).

The proportion of customers that make a purchase is 45%. Let Y be the number of customers that make a purchase, then Y ~ Binomial(X, 0.45).

The amount spent by a paying customer follows an exponential distribution with a mean of $120. Let Z be the amount spent by a paying customer, then Z ~ Exp(1/120).

Now, let's find the mean and variance of the total sales per day.

E[XY] = E[E[XY|X]] = E[X * 0.45] = 70 * 0.45 = 31.5

E[Z] = 120

E[XYZ] = E[E[XYZ|XY]] = E[XY * 120] = 31.5 * 120 = 3780

Var(XY) = E[Var(XY|X)] + Var(E[XY|X]) = E[X * 0.45 * 0.55] + Var(X * 0.45) = 70 * 0.45 * 0.55 + 70 * 0.45 * 0.55 = 17.325

Var(Z) = 120^2

Var(XYZ) = E[Var(XYZ|XY)] + Var(E[XYZ|XY]) = E[XY * 120^2] + Var(XY * 120) = 31.5 * 120^2 + 17.325 * 120^2 = 3035250

Therefore, the variance of the total sales per day is Var(XYZ) = 3035250.

The standard deviation of the total sales per day is the square root of the variance:

SD(XYZ) = sqrt(3035250) = 1743.28

Therefore, the standard deviation of the total sales per day for the shoe store is approximately $1743.28.

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ANSWER: -1/4

EXPLANATION:

4x-y=9

y=4x-9

(so slope/gradient of this line is 4 as y= mx+c and the coefficient of x here is 4)

(formula for perpendicular slopes) m1 multiplied by m2 = -1, where m= gradient

So, m1 x 4= -1

    m of perp line= -1/4

Answer: 100 balloons

Step-by-step explanation:

The part of all the balloons Masha purchased to decorate the party was 95 percent.

In Mathematics, fractions are represented as a numerical value, which defines a part of a whole. A fraction can be a portion or section of any quantity out of a whole, where the whole can be any number, a specific value, or a thing.

Let the number of red balloons, green & yellow balloons would be r, g and y

She bought 40 red balloons.

So r = 40

The number of green balloons Masha bought is 3/5 of the number of red balloons.

So, \(g =(\frac{3}{5})r\)

\(= (\frac{3}{5})40\)

\(= 24\)

The number of green balloons is also \(\frac{2}{3}\) of the number of yellow balloons.

So \(g = (\frac{2}{3})y\)

\(y = \frac{(24)(3)}{2}\)

\(= 36\)

Here the total number of balloons \(= 40+24+36\)

\(= 100\)

So the number of balloons popped \(= 40(\frac{1}{20}) + 24(\frac{1}{12}) + 36(\frac{1}{36})\)

\(= 5\)

Therefore, the number of balloons that can be blown up \(= 100- 5\)

\(= 95\)

In percentage, 95%

Hence, the part of all the balloons Masha purchased to decorate the party was 95 percent.

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We need to know about z-score to solve the problem. The z-score of the soda is 0.6

A z-score tells you how many standard deviations away an individual data falls from the mean. We can calculate z-score from the standard deviation and mean of the data. In this question we know that the cost of a soda is $1.15 and the mean is $1.00 and the standard deviation is $0.25.We need to calculate the z-score of the soda with the given information.

z-score=x-μ/σ=1.15-1.00/0.25=0.15/0.25=0.6

Therefore the z-score of the soda is 0.6

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The missing piece of information in the proof is that m ∠ DOA and m ∠ BOC are vertical opposite angles.

According to the equality's subtraction property, equality is unaffected by removing the same amount from both sides of an equation. When the same quantity or value is removed from both sides of an equation, the resultant difference is also identical on both sides.

Both the equality's addition and subtraction properties are related. The same integer added to or subtracted from both sides of an equation maintains equality on both sides.

To prove that m ∠ BOC = 90°.

Given that m ∠ AOB exists a right angle triangle.

Therefore; m ∠ BOC must also be equivalent to 90°.

Since m ∠ BOC and m ∠ AOB are right angles, it follows that m ∠ DOA and m ∠ BOC are also vertical opposing angles and, as such, are equal.

So, the fact that m ∠ DOA and m ∠ BOC are vertical opposing angles is the crucial piece of information missing from the proof.

The complete question is:

Given: AOB is a right angle

Prove: m BOC = 90°

Since AOB is a right angle, it is 90°. AOB is supplementary to BOC,

so m AOB + m BOC = 180°. By the substitution property of equality,

90 + m BOC = 180°. Applying the subtraction property of equality,

m BOC = 90%. What statement is missing from the proof?

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Enchanted Rock State Natural Area is located at latitude 30.506130 and longitude -98.820064. The geographic coordinates of Enchanted Rock State Natural Area in Fredericksburg, United States, are 30° 30' 22.068" N and 98° 49' 12.2304" W. Enchanted Rock State Natural Area falls under the Mysterious Sites category.

The standard datum used by default for GPS devices used for commercial and recreational purposes is WGS84. GPS users are advised to always verify the datum of the maps they are utilising.

WGS 84, also known as the datum, is now in use by US forces.

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Answer:

B several

Step-by-step explanation:

The solutions are where the graphs intersect

It appears there are 3 points of intersection

Given the choices

It is more than one and less than infinite

Answer:

Jaun has 15

Pedro has 3

Carlos has 1

Step-by-step explanation: