Which of the following statements is TRUE about the function f(x,y)=(x+2)(2x+3y+1)19691​ fx​(−2,1)=3.  fx​(−2,1)=0 fx​(−2,1) does not exist. fy​(−2,1)=1.  fy​(−2,1) does not exist.

Answer:

no

Step-by-step explanation:

2/5 * 6/6 = 12/30 which is not equal to 12/20 and if we make the denominator same i.e 2/5 * 4/4 = 8/20 which is again not equal to 12/20

Answer:

Hello! :) I hope I’m correct!!

Step-by-step explanation:

2/5 and 12/20 are NOT equivalent.

First we have to find out what times 2 gives you 12

2x6=12

It will be 6.

Since you did this for the numerator, you have to do the same for the denominator.

(Multiply both the numerator and denominator by 6)

5x6=30

For our numerator we got 12 and for our denominator we have 30

Which will be 12/30 not 12/20

2/5 is equivalent to 12/30 but not 12/20.

So therefore the answer to your question will be NO, 2/5 and 12/20 are not equivalent.

Hope this helps! :)

If you have any questions, than feel free to ask them! :)

By: BrainlyAnime ^-^

Answer:

Step-by-step explanation:

are the what???

Answer:

a

Step-by-step explanation:

because if they are 3.00 dollars then you decide that bye 180 to get your answers

Answer:

B

Step-by-step explanation:

because 180 is 15 dozen so 15 times 3 would give you the right answer

Answer:

(-8, 7) reflected across the x-axis would be (-8, -7).

Step-by-step explanation:

To reflect a point across the x-axis, all you have to do is invert the y-coordinate.

For the given point (-8, 7), the y-coordinate is 7. Just invert that number, meaning make a positive number into a negative, or a negative number into a positive.

\(7\times -1=-7\)

(-8, 7) reflected across the x-axis would be (-8, -7).

The solution to the equation given as 2x - 3 = 3 is  x = 3

Linear equations are equations that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient

The equation is given as

2x - 3 = 3

The above equation is a linear function

So, we plot a linear equation (see attachment)

On the attached graph, we can see that the solution is a vertical line that passes through x = 3

Hence, the solution to the equation given as 2x - 3 = 3 is  x = 3

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Answer:

\(2x^2 + 7x + 3\)

Step-by-step explanation:

multiply 2x * x = \(2x^2\)

multiply 2x * 3 = \(6x\)

multiply 1 * x = \(x\)

multiply 1 * 3 = \(3\)

   6x + x = \(7x\)

\(2x^2 + 7x + 3\)

Answer:

yes

Step-by-step explanation:

In a rhombus, the diagonals intersect at an angle of 90º.

Let O be the intersection of both diagonals.

Since the diagonals on a parallelogram intersect at the middle point, and all the sides of a rhombus have the same meaure, then all the triangles that are formed (ROS, TOS, TOQ, ROQ) are congruent.

Then, we know that:

Since the angles 3 and 2 are complementary angles, then:

Since the angles 4 and 3 are congruent, then:

Therefore:

For the first set, {(x, y) = R² | 9x² + y² = 0}, we can choose any value of x and y such that 9x² + y² = 0, such as (0, 0). Then, we can choose a ball centered on (0, 0) with radius ε > 0, such as the ball {(x, y) = R² | 0 < x² + y² < (1 + ε)^2}. This ball is contained in the first set because any point in the ball satisfies the equation 9x² + y² = 0.

For the second set, {(x, y) = R² | 9x² + y² = 0}, we can choose any value of x and y such that 9x² + y² = 0, such as (0, 0). Then, we can choose a ball centered on (0, 0) with radius ε > 0, such as the ball {(x, y) = R² | 0 < x² + y² < (1 + ε)^2}. This ball is contained in the second set because any point in the ball satisfies the equation 9x² + y² = 0.

For the third set, {(x, y) = R² | 9x² + y² = 0}, we can choose any value of x and y such that 9x² + y² = 0, such as (0, 0). Then, we can choose a ball centered on (0, 0) with radius ε > 0, such as the ball {(x, y) = R² | 0 < x² + y² < (1 + ε)^2}. This ball is contained in the third set because any point in the ball satisfies the equation 9x² + y² = 0.

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Answer:

136 m²

Step-by-step explanation:

A = bh + 2ls + lb

A = (6)(4) + 2(7)(5) + (7)(6)

                    ↓

          24 + 70 + 42

                    ↓

                  136

Answer:

129 m²

Step-by-step explanation:

2 traingles + 3 rectangles

2(½×6×4) + 3(5×7)

24 + 105

129 m²

Answer:

I dunno

Step-by-step explanation:

Answer:

h²= p²+b²

Step-by-step explanation:

Distance between any two points

Part A: The amount of taxes owed on a taxable income of $39,000 is of $4,680.

Part B: The piece-wise function for this problem is defined as follows:

Part C: The chart of marginal tax rate is represented on piece-wise function by considering slope of each interval along with the intercept which is calculated considering bounds of the intervals of each tax bracket.

The amount of taxes owed is obtained applying the proportion of the tax rate relative to the annual salary.

The tax rate for a taxable income of $39,000 is of 12%, hence the amount is given as follows:

= 0.12 x 39000

= $4,680.

A piece-wise function is a function that has different definitions based on the input.

The piece-wise functions for this problem are all derived considering the intervals with the tax brackets,

For the first tax bracket, the proportion is merely applied, as follows:

0.1x, 0 ≤ x ≤ 10275;

For the first tax bracket, the maximum income is of $10,275.

The maximum tax of the first tax bracket is of:

= 0.1 x 10275

= 1027.5.

Then, function for the second bracket rate is obtained as follows:

f(x) = 1027.5 + 0.12(x - 10275), 10276 ≤ x ≤ 41175.

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Answer:

-24

Step-by-step explanation:

f(4)= -4(x+2)

f(4)= -4(6)

f(4)= -24

Answer:

F(x)=-4(x+2)

0=-4-8

4x=-8

X=-2

So,-2×2

-4

Step-by-step explanation:

Have a great day!

Al-Fatihah is an Islamic prayer recited during the five daily prayers. Comparing radio and television in reading Al-Fatihah from its beginning requires an analysis of how each medium conveys the prayer to its audience. Radio precedes television in reading Al-Fatihah from its beginning.

This is because radio broadcasting began in the early 1900s while television broadcasting began in the late 1940s.

This delay can range from a few seconds to a few minutes depending on several factors such as the geographical location of the audience, the strength of the signal, and the quality of the receiver. Therefore, the time difference between radio and television in reading Al-Fatihah can vary depending on the factors mentioned above.

Mathematically, the time difference between radio and television can be calculated using the formula: d = s / tWhere d is the distance between the transmitter and the receiver, s is the speed of the signal, and t is the time it takes for the signal to reach the receiver.

In this case, d is the distance between the broadcasting station and the audience, s is the speed of the signal which is constant (i.e., the speed of light), and t is the time it takes for the signal to reach the audience. Since the speed of light is approximately 299,792,458 m/s, the time it takes for the signal to reach the audience can be calculated using the following formula:t = d / s

Therefore, the time difference between radio and television in reading Al-Fatihah can be calculated by subtracting the time it takes for the radio signal to reach its audience from the time it takes for the television signal to reach its audience. This difference can range from a few milliseconds to a few minutes depending on the factors mentioned above.

In network concepts, the time difference between radio and television in reading Al-Fatihah can be affected by the bandwidth of the network. The bandwidth is the amount of data that can be transmitted over a network in a given time. If the bandwidth is low, it can cause a delay in the transmission of the signal which can affect the time difference between radio and television.

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The shortest distance that gecko covers is 22.4 feet.

According to the statement

we have given that the some data and from that we have to ind the height that gecko does not jump.

So, for this purpose,

For the gecko to walk the shortest distance, it has to go straight from where it is to the ceiling, diagonally from the ceiling to the wall where the fly is and straight from the corner of the ceiling to where the fly is.

straight from where it is to the ceiling: 1 feet

diagonally from the ceiling to the wall where the fly:

it is a right triangle hypotenuse what we want, leg 12 and 8.

(see picture attached):

h² = 12² + 8²   And

h = √208  

h = 14.4 feet

straight from the corner of the ceiling to where the fly is: 7 feet.

1 + 14.4 + 7 = 22.4

It is the shortest distance.

So, The shortest distance that gecko covers is 22.4 feet.

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(a)The amount of water in the tank is increasing.

(b)Evaluate  \(\int\limits^{18}_0(W(t) - R(t)) dt\) to get the number of gallons of water in the tank at t = 18.

(c)Solve part (b) to get the absolute minimum from the critical points.

(d)The equation can be set up as   \(\int\limits^k_{18}-R(t) dt = 1200\) and solve this equation to find the value of k.

What is the absolute value of a number?

The absolute value of a number is its distance from zero on the number line. It represents the magnitude or size of a real number without considering its sign.

To solve the given problems, we need to integrate the given rates of water flow to determine the amount of water in the tank at various times. Let's go through each part step by step:

a)To determine if the amount of water in the tank is increasing at time t = 15, we need to compare the rate of water being pumped in with the rate of water being removed.

At t = 15, the rate of water being pumped in is given by \(W(t) = 95Vt sin^2(\frac{t}{6})\) gallons per hour. The rate of water being removed is \(R(t) = 275 sin^2(\frac{1}{3})\) gallons per hour.

Evaluate both rates at t = 15 and compare them. If the rate of water being pumped in is greater than the rate of water being removed, then the amount of water in the tank is increasing. Otherwise, it is decreasing.

b) To find the number of gallons of water in the tank at time t = 18, we need to integrate the net rate of water flow from t = 0 to t = 18. The net rate of water flow is given by the difference between the rate of water being pumped in and the rate of water being removed. So the integral to find the total amount of water in the tank at t = 18 is:

\(\int\limits^{18}_0(W(t) - R(t)) dt\)

Evaluate this integral to get the number of gallons of water in the tank at t = 18.

c)To find the time t when the amount of water in the tank is at an absolute minimum, we need to find the minimum of the function that represents the total amount of water in the tank. The total amount of water in the tank is obtained by integrating the net rate of water flow over the interval [0, 18] as mentioned in part b. Find the critical points and determine the absolute minimum from those points.

d. For t > 18, no water is pumped into the tank, but water continues to be removed at the rate R(t) until the tank becomes empty. To find the value of k, we need to set up an equation involving an integral expression that represents the remaining water in the tank after time t = 18. This equation will represent the condition for the tank to become empty.

The equation can be set up as:

\(\int\limits^k_{18}-R(t) dt = 1200\)

Here, k represents the time at which the tank becomes empty, and the integral represents the cumulative removal of water from t = 18 to t = k. Solve this equation to find the value of k.

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Answer:

62

Step-by-step explanation:

6*13-4^2

6*13-16

78-16

62

Answer:

1/4 x 1/4= 1/16

Step-by-step explanation:

2 3's out of 8 pieces=2/8=1/4

1 A out of 4 letters = 1/4

Answer:

I think 13 cm. You add the numbers 5,5,3 together to get 13

Step-by-step explanation:

Answer:

25 cm

Step-by-step explanation:

Answer:

i think the answer is inequality

The values of the placeholder variables are as follows;

The actual expression in the task content can be further simplified as follows;

(-2jk²/3km⁴)³

= -8j³k⁶/27k³m¹²

= -8j³k³/27m¹².

Hence, by comparison; the values of the variable are as indicated above.

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Answer:

62 square units

Step-by-step explanation:

Area = 2(lb+lh+bh)

= 2(3×2+3×5+2×5)

= 62

The solid represented by the net is a rectangular prism.

And, The surface area of the solid is , 62.

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

We have to given that;

The solid represented by the net.

Here, We know that;

A rectangular prism is a three-dimensional solid shape with six faces that including rectangular bases.

Hence, The solid represented by the net is a rectangular prism.

Here, The length of the rectangular prism (l) = 5

The width of the rectangular prism (w) = 2

The height of the rectangular prism (h) = 3

We know that;

The surface area of the rectangular prism = 2 (wl + hl + hw)

Substitute all the values, we get;

The surface area of the rectangular prism = 2 (2×5 + 3×5 + 3×2)

The surface area of the rectangular prism = 2 (10 + 15 + 6)

The surface area of the rectangular prism = 2 × 31

The surface area of the rectangular prism = 62

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a) The probability of randomly selecting 4 males out of 7 spectators, given that 70% of the spectators are males, can be calculated using the binomial probability formula.

b) To find the probability that at most 5 of the randomly selected spectators are females, we need to calculate the cumulative probability of selecting 0, 1, 2, 3, 4, and 5 females from the total number of selected spectators.

a) To calculate the probability of selecting 4 males out of 7 spectators, we can use the binomial probability formula:

P(X = k) = C(n, k) * p^k * (1 - p)^(n - k)

Where:

- n is the total number of trials (number of people selected)

- k is the number of successful trials (number of males selected)

- p is the probability of success in a single trial (probability of selecting a male)

- C(n, k) is the binomial coefficient, calculated as C(n, k) = n! / (k! * (n - k)!)

In this case, n = 7, k = 4, and p = 0.70 (probability of selecting a male). Therefore, the probability of selecting 4 males out of 7 spectators is:

P(X = 4) = C(7, 4) * (0.70)^4 * (1 - 0.70)^(7 - 4)

b) To find the probability that at most 5 of the selected spectators are females, we need to calculate the cumulative probability of selecting 0, 1, 2, 3, 4, and 5 females. This can be done by summing the individual probabilities for each case.

P(X ≤ 5 females) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) + P(X = 5)

To calculate each individual probability, we use the same binomial probability formula as in part a), with p = 0.30 (probability of selecting a female).

Finally, we sum up the probabilities for each case to find the probability that at most 5 of the selected spectators are females.

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To determine the distance between the buildings, we can use trigonometry and the given information. Let's consider the triangle formed by Sari, building A, and building B. The side opposite the 40° angle is the distance between the buildings that we want to find.

Using the tangent function, we can set up the following equation: tan(40°) = opposite/adjacent. tan(40°) = distance between the buildings/20 meters. To find the distance between the buildings, we rearrange the equation: distance between the buildings = 20 meters * tan(40°). Using a calculator, we can evaluate the expression: distance between the buildings ≈ 20 meters * 0.8391 ≈ 16.782 meters. Therefore, the buildings are approximately 16.782 meters apart. To determine the distance between the buildings, we can use trigonometry and the given information. Let's consider the triangle formed by Sari, building A, and building B. The side opposite the 40° angle is the distance between the buildings that we want to find.

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(i) Another pair of polar coordinates for the point (2, -π/7) such that r > 0 and 2π ≤ θ ≤ 4π is (2, 13π/7).

(ii) Another pair of polar coordinates for the point (2, -π/7) such that r < 0 and -2π ≤ θ < 0 is (-2, -15π/7).

(a) To find another pair of polar coordinates for the given point (2, -π/7) such that r > 0 and 2π ≤ θ ≤ 4π, we can add any multiple of 2π to the angle while keeping the radius positive. Let's start by finding the equivalent angle within the given range.

Given θ = -π/7, we can add 2π to it to get a new angle within the desired range:
θ' = -π/7 + 2π = 13π/7

So, for r > 0 and 2π ≤ θ ≤ 4π, the polar coordinates are (2, 13π/7).

(ii) To find another pair of polar coordinates for the given point (2, -π/7) such that r < 0 and -2π ≤ θ < 0, we can keep the radius negative and add any multiple of 2π to the angle.

Given θ = -π/7, we can add -2π to it to get a new angle within the desired range:
θ' = -π/7 - 2π = -15π/7

So, for r < 0 and -2π ≤ θ < 0, the polar coordinates are (-2, -15π/7).

In summary:
(i) r = 2, θ = 13π/7
(ii) r = -2, θ = -15π/7

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Answer:

28

Step-by-step explanation:

\(7+7+7+7 = 14+7+7 = 21+7 = 28\)

O sino:

\(7*4 = 28\)

Answer: When you plug in an x-value into a function's derivative, the y-values you get back FROM THE DERIVATIVE tell you the slope of a tangent line to the original function at that value of x.

Step-by-step explanation: