Help me with 2 and 3

Answer:

An equation of the line that passes through the point (-4, -6) and is perpendicular to the line 2x - y = 6 is y = -2x + 10.

Answer:

The answer is root 6 + root 2/4

Step-by-step explanation:

Cos (15)

Rewrite the expression

write (15 degrees) as a difference

cos ( 45 degrees - 30 degrees)

cos ( 45 degrees - 30 degrees)

Expand the expression

Use cos ( t - s ) = cos (t) cos (s) + sin (t) sin (s)

to expand the expression

cos (45 degrees) cos ( 30 degrees) + sin ( 45 degrees ) sin ( 30 degrees)

cos (45 degrees) cos ( 30 degrees) + sin ( 45 degrees ) sin ( 30 degrees)

calculate the expression

use the trigonometric values table or unit circle to calculate the expression

root 2/root 2 × cos (30 degrees) + sin (45 degrees) sin (30 degrees)

root 2/root 2 × root 3/root 2 + sin (45 degrees) sin (30 degrees)

root 2/ root 2 × root 3/root 2 + root 2/root 2 × sin (30 degrees)

root 2/root2 × root 3/root 2 + root 2/root 2 × 1/2

root 2/root2 × root 3/root 2 + root 2/root 2 × 1/2

Multiply

root 2/root 2 × root 3/root 2 only

Multiply by the fractions

root 6/ root 4 + root 2/ root 2 × 1/2

Multiply root 2/ root 2 × 1/2 only

6 root / root 4 + root 2/ root 4

write all numerators above the denominator

root 6 + root 2 / 4

Answer:

=−ab2+2ac2+2ac+2a−28b+3c

Step-by-step explanation:

a+2c−5b−c+a−b2a−6b+2c2a−6b+ca−6b+ca−5b+2c

=a+2c+−5b+−c+a+−ab2+−6b+2ac2+−6b+ac+−6b+ac+−5b+2c

Combine Like Terms:

=a+2c+−5b+−c+a+−ab2+−6b+2ac2+−6b+ac+−6b+ac+−5b+2c

=(−ab2)+(2ac2)+(ac+ac)+(a+a)+(−5b+−6b+−6b+−6b+−5b)+(2c+−c+2c)

=−ab2+2ac2+2ac+2a+−28b+3c

Answer:

=−ab2+2ac2+2ac+2a−28b+3c

Answer:

B. 2a − 6b + c

Step-by-step explanation:

Took the test :)

The statements that are true regarding triangle XYZ are XZ = 9√2 and YZ = 9

from the question, we have the following parameters that can be used in our computation:

XY = 9 cm

Also, we have the right triangle

The acute angle in the triangle is 45 degrees

This means that

XY = YZ = 9

It also means that

XZ = XY√2

So, we have

XZ = 9√2

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The height of the pole is 220 centimeters. We can solve it in the following manner.

We can use the Pythagorean theorem to solve this problem. The Pythagorean theorem states that in a right triangle, the sum of the squares of the lengths of the legs (the sides adjacent to the right angle) is equal to the square of the length of the hypotenuse (the side opposite the right angle).

Let h be the height of the pole. Then, we have:

h² + 21² = 221²

Simplifying the right side of the equation, we get:

h² + 441 = 48841

Subtracting 441 from both sides, we get:

h² = 48400

Taking the square root of both sides, we get:

h = 220

Therefore, the height of the pole is 220 cm.

So, the answer is 220 centimeters.

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Answer:

r = -28/9

Step-by-step explanation:

use slope formula of (y₂-y₁) / (x₂-x₁)

5/9 = [r - (-2)] / [-7 - (-5)]

5/9 = (r+2) /-2

cross-multiply to get:

-2(5) = 9(r+2)

-10 = 9r + 18

-28 = 9r

r = -28/9

3 oz = 88.7205 mL.

To convert ounces (oz) to milliliters (mL), you will need to use a conversion factor. The conversion factor between ounces and milliliters is 1 oz = 29.5735 mL.

This means that 1 ounce is equal to 29.5735 milliliters. To convert a volume measurement in ounces to milliliters, you will multiply the volume in ounces by the conversion factor of 29.5735.

For example,

if you have a volume measurement of 3 ounces, you would multiply 3 x 29.5735 to get 88.7205 milliliters.

You can also use the conversion in the opposite direction, from milliliters to ounces by using the conversion factor 1 mL = 0.033814 oz. For example, if you have a volume measurement of 88.7205 milliliters, you would divide 88.7205 by 29.5735 to get 3 oz.

It's important to note that when measuring volume, it's important to use the same system of measurement as the requirement, as using the wrong measurements can greatly affect the outcome of the calculation. It's always good to know the conversion factors to make your calculations easier.

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Answer: the answer is c I think

Evin is walking home from the museum. She starts 38 blocks from home and walks 2 blocks each minute. Evin's distance from home is a function of the number of minutes she has been walking.

(a) which variable is independent and which variable is dependent in this scenario?

(b) Fill  in the table below for a variety of time values.

Time, t, in minutes                                0               1            5          10

Distance from home, D, in blocks  

Answer:

Step-by-step explanation:

From the given information:

(a) which variable is independent and which variable is dependent in this scenario?

An independent variable is a variable that when two variable occurs in a particular event, one variable does not in any way affect the event of the other variable.

A dependent variable is a variable where on variable is dependent on the other variable.

From the question given;

time (t) in minutes is the independent variable

Distance D from home is the dependent variable

(b) Fill  in the table below for a variety of time values.

Time, t, in minutes                                0               1            5          10

Distance from home, D, in blocks      

We are being told that Evin starts 38 blocks from home,

Then she is just starting, i.e from rest

Then; at time t = 0 , she is 38 block distance from home

However, if she walks 2 blocks each minute,

then after 1 minute , that will be 38 blocks - 2 blocks = 36 blocks distance from home.

If she walks for 5  minutes,

then she will be (38 - 2(5) ) blocks away from home

= 38 - 10

= 28 blocks away from home

If she walks for 10 minutes,

then she will be (38 -2(10)blocks away from home

= 38 - 20

= 18 blocks away from home.

Time, t, in minutes                                0               1            5          10

Distance from home, D, in blocks      38              36         28        18

number line with closed circle on point negative 7 over 22 and arrow shaded to the left

In other words, we shade to the left of -7/22 and have a closed circle at this endpoint.

======================================================

Explanation:

Let's solve for m. To do so, we multiply both sides by 7 to clear out the fraction on the left side.

\(\frac{1}{7}m \le -\frac{1}{22}\\\\7*\frac{1}{7}m \le 7*\left(-\frac{1}{22}\right) \ \ \text{ ... multiply both sides by 7}\\\\m \le -\frac{7}{22}\)

The inequality sign doesn't flip since we didn't multiply both sides by a negative number.

The graph will involve a closed circle on the point -7/22 and an arrow shaded to the left. Therefore, it leads to choice D being the final answer.

This visually describes all values of m that either m = -7/22 or m < -7/22.

Side note: if there wasn't an "or equal to", then use an open circle or open hole, rather than a closed circle.

Answer:

See below

Step-by-step explanation:

An actual popsicle stick has THREE lines of symmetry

   the figure shown has TWO lines of symmetry

Step-by-step explanation:

x-25= 6x-5

-5x = 20

x=-4

Answer:

4,756.66 seconds or 1.321 hours

Here's how I got that:

- Simply use time formula and plug in what you know -

                         t = distance/speed

                                         ↓

              1,427,000,000,000/300000000

                                         ↓

                                t = 4,756.66

~That's all folks~

-Siascon

The value of the num will be 18 after the expression is evaluated.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that int x = 4; int y = 9 / 2; int num = 6; num *= x y; the value of num after the evaluation of the expression will be:-

num = x y

num = [ ( 4 x ( 9 / 2 ) ]

num = 9 x 2

num = 18

Therefore, the value of the num will be 18 after the expression is evaluated.

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Marry rate of investment is 4%.

Lets solve it through simple steps,

30% 0f $200,000 = $60,000

$200,000-$60,000 = $140,000

Rate 1.5%

Rate 4% = (140,000-x)

Interest earned = $4,350

1.5x+4(150,000-x)=4350*100

1.5x+600,000-4x=435,000

1.5x-4x=435,000-600,000

-2.5x=-165,000 /-2.5

x=66000

$ 66,000  1.5%

Balance = $74,000 at  4%

Hence the rate is 4%

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A left-recursive grammar rule is one where the non-terminal symbol appears on the left side of the production rule. In contrast, a right-recursive grammar rule is one where the non-terminal symbol appears on the right side of the production rule.

In a grammar, a production rule consists of a non-terminal symbol (the left-hand side) and a sequence of terminal and/or non-terminal symbols (the right-hand side). The order in which these symbols appear determines whether the rule is left-recursive or right-recursive.

A left-recursive grammar rule is of the form A -> Aα, where A is a non-terminal symbol and α is a sequence of terminal and/or non-terminal symbols. This rule allows the non-terminal A to derive itself or to derive a string that eventually leads to A. Left-recursion can cause infinite loops during parsing or evaluation.

On the other hand, a right-recursive grammar rule is of the form A -> αA, where A is a non-terminal symbol and α is a sequence of terminal and/or non-terminal symbols. In this case, the non-terminal A appears at the end of the rule, allowing the derivation to proceed from left to right.

The distinction between left-recursive and right-recursive grammar rules is important in parsing algorithms and language processing. Most top-down parsing techniques, like recursive descent parsing, can handle right-recursive rules efficiently, while left-recursive rules can cause problems.

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Answer:

\(8^{-3}\)

Step-by-step explanation:

\(8^{3}/8^6\) = \(8^{3-6}\) = \(8^{-3\)

The present ages of Raj and his daughter are respectively: 42 years and 12 years.

Present Age of Raj =y years

Present Age of daughter =x years

According to Question :

7 Years ago,

y − 7 = 7(x − 7)

⇒ 7x − y − 42 = 0.............(1)

And 3 Years from now

y + 3 = 3(x + 3)

⇒ 3x − y + 6 = 0............(2)

From eq (1) and eq (2)

Subtract eq 2 from eq 1 to get:

7x − 3x − y + y − 42 − 6 = 0

⇒ 4x = 48

⇒ x = 12

Putting x = 12 in Equation (2). we get,

(3 × 12) − y + 6 = 0

⇒ y = 42

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Answer:

a = 38 degree

b = 54 degree

c = 54 degree

Step-by-step explanation:

a = 180 - 142 = 38 ( angle on a straight line is equal to 180)

To determine the value of b, we have to find the other missing angle in the triangle.

the value of the missing angle is 38

Alternate angles are equal. the missing angle is alternate to angle b which has a value of 38

b = 180 - (38 + 88) = 54

c = 54

Answer:

x=2

Step-by-step explanation:

1. Set the proportions equal: 5/2x-3 = 15/27

2. Butterfly method: 27x5 = 3x-3 x 15

3. Continue solving: 135 = 45x-45

4. Break it down: 45x = 90

5. Solution: 2 because 45 x 2 is equal to 90

Answer:

x=4

Step-by-step explanation:

\(\frac{3x-3}{5}=\frac{24+3x}{20}\)          Original equation. A proportion can be set up so that

                              you can find x. One proportion can be one side over the

                              other side of one of the smaller triangle set equal

                              to the total length of the larger triangle. 27 and -3 can

                              combine forming 24, which continues to be added to 3x.

                              15 and 5 can be combined to become 20.

20(3x-3)=5(24+3x) Now, cross multiply. This involves the distribution of one

                               term to the terms it's multiplied by. 20*3x=60x and

                               20*-3=-60. 5*24=120 and 5*3x=15x.

60x-60=120+15x     Now, the goal is to get x alone on one side. You can do

                                this by combining like terms. Subtract 15x from both

                                sides and add 60 to both sides.

45x=180                   Then, divide by 45 to get x by itself.

x=4                            This is your answer.

Answer:

Median : 11.5, or 12 if you round it up.

Mean : 10.9 rounded up 10.875 not rounded.

Hope this help's, enjoy!

A. can be used to test joint hypotheses.

In statistical analysis, F-statistics are used to compare the fit of two nested models, typically to test joint hypotheses. Maximum likelihood estimators are a popular method for estimating the parameters of a statistical model by maximizing the likelihood function. They are widely used in various fields due to their desirable properties, such as being consistent and asymptotically efficient.

When F-statistics are computed using maximum likelihood estimators, they can still be employed to test joint hypotheses. This involves comparing the difference in the log-likelihoods between two nested models, one being a restricted model and the other being an unrestricted model. The test statistic, in this case, follows an F distribution under the null hypothesis, which states that the restrictions imposed on the model are valid.

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Answer:

8

Step-by-step explanation:

x= 24/3 = 8

Answer:

\( \sf \: x = 8\)

Step-by-step explanation:

Given equation,

→ 3x = 24

Now the value of x will be,

→ 3x = 24

→ x = 24 ÷ 3

→ [ x = 8 ]

Hence, the value of x is 8.

When an algorithm necessitates extensive sharing of instantaneous results, parallelism slows it down. Because there are multiple independent parallel processes and the right number of threads, parallelism will speed up an algorithm.

The ones with data dependencies are the most challenging. It will be exceedingly challenging, for instance, if you are dealing with a vector and the input for the computation at point n depends on the output at position n-1.

When this occurs, you must comprehend what the original algorithm is doing and take an alternative approach. For the aforementioned case, it might be a difficulty with digital signal processing including a feedback-containing digital filter. These are challenging to parallelize, but that is not the sole solution. Instead, you might use the filter and signal's fast Fourier transforms, multiply them, and then perform the inverse transform. All of these operations can be partially parallelized.

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To address the issue of a linear model not accurately approximating the Q-function, you can consider using a more expressive model, such as a non-linear model or a deep neural network. This will allow for better representation of complex relationships and improve the approximation of the Q-function.

In the given project context, it has been observed that a linear model is insufficient in accurately approximating the Q-function for the task at hand. This implies that the relationship between the states, actions, and their corresponding Q-values is not linear and requires a more sophisticated approach.

One possible solution is to use a non-linear model or a deep neural network as the function approximator. Non-linear models have the ability to capture more complex patterns and relationships in the data. Deep neural networks, in particular, have been successful in approximating Q-functions in various reinforcement learning tasks.

By employing a non-linear model or a deep neural network, you can leverage their capacity to learn intricate representations and capture the underlying dynamics of the task. This will result in a more accurate approximation of the Q-function and consequently improve the performance of the reinforcement learning algorithm.

It is important to note that using a more expressive model also introduces additional considerations, such as the need for more data, potential overfitting, and the requirement for appropriate training techniques. Nonetheless, adopting a non-linear or deep neural network model can significantly enhance the approximation of the Q-function and ultimately lead to better performance in the given task.

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