please please help im gonna fail​

Answer:

Step-by-step explanation:

-1

The value of x in the triangle is (a) 30√2

The complete question is in the attached image.

From the attached image of the triangle, we can see that the triangle is a right triangle, and x can be solved using the following sine function

\(\sin(45) = \frac{30}{x}\)

Evaluate sin(45)

\(\frac 1{\sqrt 2} = \frac{30}{x}\)

Solve for x

\(x = 30 * \sqrt 2\)

Evaluate

\(x = 30 \sqrt 2\)

Hence, the value of x in the triangle is (a) \(30 \sqrt 2\)

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Answer:

Inequality Form:

X > -23

Interval Form:

(-23, ∞)

Given function is

z=f(x,y)=(xy)²-ln(xy)

To find: fxy and fyx We have the function

z=f(x,y)=(xy)²-ln(xy)

Differentiate the function partially w.r.t x keeping y constant

f(x,y)=(xy)²-ln(xy)

Differentiating partially w.r.t x keeping y constant gives:

∂f/∂x = 2xy - (1/x)

equation (1)Differentiate the function partially w.r.t y keeping x constant

f(x,y)=(xy)²-ln(xy)

Differentiating partially w.r.t y keeping x constant gives:

∂f/∂y = 2yx - (1/y) equation

(2)Hence, the values of fxy and fyx are given by

fxy ≡ ∂²f/∂y∂x = ∂/∂y(2xy - (1/x)) = 2xfyx

∂²f/∂x∂y = ∂/∂x(2yx - (1/y)) = 2y

Therefore,

fxy = 2x

and f

yx = 2y

Thus, the correct options are:fxy ≡ 2xy-1/y2fyx ≡ 2xy-1/x2

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The value of the given expression is -32w⁵.

Simplify simply means to make it simple. In mathematics, simply or simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

The given expression is (-2w)⁵.

Here, (-2w)⁵=(-2)⁵×w⁵

= -32w⁵

Therefore, the value of the given expression is -32w⁵.

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Answer:

(7x-12)=-5

-5x÷-5 114÷-5=

x=29

\((7x - 12) + 114 = 180\)

Reason: The cointerior angles equal 180°

Collecting like terms:

\(7x + 102 = 180 \\ 7x = 180 - 102\)

\(7x = 78\)

Divide both sides of the equation by the coefficient of 7x which is 7.

\( \frac{7x}{7} = \frac{78}{7} \)

\(x = \frac{78}{7} = \\ = 11.14\)

( The decimal answer is not necessary except if asked for)

9514 1404 393

Answer:

  JL = 9√13

Step-by-step explanation:

All of the triangles in this geometry are similar:

  ∆MKL ~ ∆MLJ ~ ∆LKJ

Corresponding sides of similar triangles are proportional, so you can write the relations ...

  JL/JM = JK/JL   ⇒   JL² = JM·JK

  LM/JM = KM/LM   ⇒   LM² = JM·KM

Using the second expression to find JM, we have ...

 JM = LM²/KM = 18²/12 = 27

We know that JK = JM +KM. Then the first expression can be ...

  JL² = 27·(27 +12) = 9²·13

  JL = 9√13

Only a and c represent function

How is a sequence defined?

In mathematics, a sequence is a list of items that is in order (or events). It has members and is similar to a set (also called elements, or terms). The number of ordered elements determines the length of the sequence (potentially infinite).

a. The sequence 2, 4, 6, 8, 10, ... represents a function. The domain of the function is the set of natural numbers, and the range is the set of even natural numbers. We can create a mapping by using the rule "multiply by 2" to match each input value of the domain with its corresponding output value in the range. For example, 2 maps to 4, 4 maps to 8, 6 maps to 12, and so on.

b. The sequence 1, 0, 1, 0, 1, ... does not represent a function. The reason is that for any given input value, the output value is not unique. For example, the input value of 1 maps to both 1 and 0, which means that the function is not well-defined.

c. The sequence 0, 5, 10, 15, 20, ... represents a function. The domain of the function is the set of natural numbers, and the range is the set of multiples of 5. We can create a mapping by using the rule "multiply by 5" to match each input value of the domain with its corresponding output value in the range. For example, 0 maps to 0, 1 maps to 5, 2 maps to 10, and so on.

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Answer:

90 = π/2

45 = π/4

0 and 360 = 0 and 2π

135 = 3π/4

180 = π

225 = 5π/4

270 = 2π/3

315 = 7π/4

315 =

Step-by-step explanation:

Answer:

Question 1: ∠3 and ∠7 are corresponding angles.

Question 2: ∠2 and ∠8 are alternate interior angles.

Question 3: ∠4 and ∠6 are alternate exterior angles.

Question 4: ∠2 is congruent to ∠6.

Question 5: ∠8 is not congruent to ∠1.

Question 6: If ∠2 measures 132°, the measure of ∠7 would be 48°.

Answer:

8 hours

Step-by-step explanation:

if it takes 2hrs to do 4 pages it takes an hour to do 2 pages

2*8=16

1*8=8

8 hours

hope it helps

Answer:

Y = -6X - 15

Step-by-step explanation:

-3 = -6(-2) + B

-3 = 12 + B

B= -15

Answer:

You didn't attach the options, but y = - 6x - 15

Step-by-step explanation:

Using the equation y = mx + b, you can plug in values that you have to solve for b, the y intercept. Since m is the slope and the slope is - 6, and you have a y and x value, you can write the equation as follows:

-3 = - 6 * -2 + b

Then solve for b

-3 = 12 + b

-15 = b

Then you rewrite the original formula with the values of m and b:

y = - 6x - 15

Angle of observation is changing at a rate of -1/15 radians per second (or about -3.8 degrees per second).

We can solve this problem using the concept of related rates. Let's call the distance between the person and the hot air balloon "d" and the height of the hot air balloon "h". We are given that:

d = 400 feet (constant)

dh/dt = -20 ft/sec (because the hot air balloon is coming down)

We want to find dθ/dt, the rate at which the angle of observation is changing.

We can start by drawing a right triangle with the hot air balloon at the top, the person at the bottom left, and the ground at the bottom right. The angle of observation is the angle at the person's location between the ground and the line connecting the person to the hot air balloon:

perl

Copy code

         /|

        / |

     h /  | d

      /   |

     /θ   |

    /_____|

       d

We can use the tangent function to relate h, d, and θ:

tan(θ) = h/d

Taking the derivative of both sides with respect to time t, we get:

sec²(θ) dθ/dt = (dh/dt)/d - h/(d²) (dd/dt)

Plugging in the values we know, we get:

sec²(θ) dθ/dt = (-20)/400 - h/(400²) (0)

When the hot air balloon is 300 feet above the ground, we can use the Pythagorean theorem to find h:

h² + d² = (400)²

h² + (300)² = (400)²

h = sqrt(400² - 300²) = 200 sqrt(2)

So, we can plug in d = 400, h = 200 sqrt(2), and dh/dt = -20 into our equation:

sec²(θ) dθ/dt = (-20)/400 - (200 sqrt(2))/(400²) (0)

sec²(θ) dθ/dt = -1/20

To solve for dθ/dt, we need to find sec(θ). We can use the Pythagorean theorem to find the length of the hypotenuse of the right triangle:

sqrt(h²+ d²) = sqrt((200 sqrt(2))² + (400)²) = 400 sqrt(3)

So, we have:

tan(θ) = h/d = (200 sqrt(2))/400 = sqrt(2)/2

sec(θ) = sqrt(1 + tan²(θ)) = sqrt(1 + (sqrt(2)/2)²) = sqrt(3)/2

Therefore:

dθ/dt = (-1/20) / (sqrt(3)/2)² = (-1/20) * (4/3) = -1/15

So, the angle of observation is changing at a rate of -1/15 radians per second (or about -3.8 degrees per second).

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Im answering so you can give hawks brainliest

Step-by-step explanation:

the answer is 9................

Step-by-step explanation:

-5x+2y= 4         <==== Multiply entire equation by -3 to get:

15x-6y = -12  

2x+3y= 6          <====  Multiply entire equation by 2 to get :

4x+6y = 12    Add the two underlined equations to eliminate 'y'

19x = 0     so x = 0

sub in x = 0 into any of the equations to find:  y = 2

(0,2)

Answer:

560

Step-by-step explanation:

You subtract 439 from 999 and you get the left over tickets that were sold over the weekend

Answer:

y=(1/2)x+4

Step-by-step explanation:

Since slope-intercept form is y=mx+b, all we need to do is divide both sides by 2:

2y=x+8

y=1/2x+4

Thus, the equation would be y=1/2x+4

The natural log-transformation is among the common transformations of variables to accommodate non-linear relationships in a linear regression model.

There are several transformations of variables to accommodate non-linear relationships in a linear regression model. Three of the common ones are: The natural log-transformation.For a given predictor X, we can create an additional predictor X² to accommodate a quadratic relationship between X and Y.For a given predictor X, we can create an additional predictor X³ to accommodate a cubic relationship between X and Y.Therefore, the natural log-transformation is among the common transformations of variables to accommodate non-linear relationships in a linear regression model. The natural log transformation is the one that's most frequently employed. It changes the distribution of a variable to make it more normal and decrease the impact of outliers. It is common for continuous predictors with right-skewed or exponential distributions, such as income, expenditures, or time. This transformation is most frequently used to help correct non-normal distributions and to correct heterogeneity of variance.

So, the natural log-transformation is among the common transformations of variables to accommodate non-linear relationships in a linear regression model.

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The low partition after the partitioning algorithm is completed is `(63,41,38,29)` and the high partition after the partition is `(80)`.

Given numbers \(=(63,80,41,64,38,29)\),

pivot \(=64\)

The low partition after the partitioning algorithm is completed is  `(63,41,38,29)` and the high partition after the partition is `(80)`.

Explanation:

The given numbers are:

\(=(63,80,41,64,38,29)\)

Pivot = 64

The steps to partition the above numbers are:

Choose the last element of the given array as the pivot element. In this case, pivot=64.

Partition the given array into two groups: a low group and a high group. The low group will contain all elements strictly less than the pivot element.

The high group will contain all elements greater than or equal to the pivot element.

Now partition the array around the pivot value (64). The result of the partitioning is that all the elements less than the pivot value (64) are moved to the left of it, and all the elements greater than the pivot value (64) are moved to the right of it. After partitioning, the array will look like this: `(63,41,38,29,64,80)`.

So, the low partition after the partitioning algorithm is completed is `(63,41,38,29)` and the high partition after the partition is `(80)`.

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Answer:8 12 and 20

Step-by-step explanation:I googled it

The area of region of the function f on the interval [1, 2] is found to be 3/2 square units using the integration.

In calculus, integration can be used to find the area of the region under a curve.

In this case, we want to find the area of the region under the graph of the function f on the interval [1, 2], where

f(x) = ∫3/2 square units.

We can start by graphing the function on the interval [1, 2]:

We can see that the graph of f is a horizontal line at y = 3/2 between x = 1 and x = 2.

Therefore, the area of the region under the graph of f on the interval [1, 2] is simply the area of a rectangle with base 1 and height 3/2:

Area = base x height

= 1 x 3/2

= 3/2 square units.

The area of the region under the graph of the function f on the interval [1, 2] is 3/2 square units.

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The number of categories of outcomes per trial for a multinomial probability distribution is three or more.

The number of categories of outcomes per trial for a multinomial probability distribution is three or more. A multinomial probability distribution is a probability distribution that can be used to describe the possible outcomes of a trial with multiple categories. Each trial can have two or more categories, with each category having one or more outcomes. Therefore, the number of categories of outcomes per trial for a multinomial probability distribution is three or more.

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Y = -1/8X +2

When X is 1, Y = -0.125+2, or 1.875

When X is -5, Y = 0.625+2, or 2.625

When X is -9, Y = 1.125+2, or 3.125

When X is -2, Y = 0.25+2, or 2.25

When X is -4, Y = 0.5+2, or 2.5

---

hope it helps

The Composite Trapezoidal rule is used to approximate the given integrals. In part (a), the integral \(\( \int_{1}^{2} x \ln x \, dx \)\) is approximated using \(\( n = 4 \)\)subintervals. In part (b), the integral\(\( \int_{2}^{2} x^{3} e^{x} \, dx \)\) is given with incorrect limits, so it cannot be evaluated.

To approximate \(\( \int_{1}^{2} x \ln x \, dx \)\) using the Composite Trapezoidal rule, we divide the interval \(\([1, 2]\) into \( n = 4 \)\) subintervals. The step size, \(\( h \)\), is calculated as\(\( h = \frac{b-a}{n} = \frac{2-1}{4} = \frac{1}{4} \)\). Then, we evaluate the function \(\( x \ln x \)\)at the endpoints of each subinterval and sum the areas of the trapezoids formed. The approximation formula for the Composite Trapezoidal rule is: \(\[\int_{a}^{b} f(x) \, dx \approx \frac{h}{2} \left[ f(a) + 2\sum_{i=1}^{n-1} f(x_i) + f(b) \right]\]\)

Using this formula, we can calculate the approximation for the given integral. The limits of the integral \(\( \int_{2}^{2} x^{3} e^{x} \, dx \)\) are given as \(\( 2 \)\) to 2 which indicates an interval of zero length. In this case, the integral cannot be evaluated since there is no interval over which to integrate.

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Answer:

\(x>-11\)

Step-by-step explanation:

\(10+2x>-12\)

Subtract both sides by 10

\(10+2x-10>-12-10\\2x>-22\)

Divide both sides by 2

\(\frac{2x}{2}>\frac{-22}{2} \\x>-11\)

I hope this helps!

Answer:

x > -11

Step-by-step explanation:

The mass of the sample decays by a factor of 3/5 every 4.27 months.

In science, decay refers to the natural process of deterioration or breakdown of a substance over time. Decay can occur in many different contexts, such as the decay of radioactive materials, the decay of organic matter, and the decay of physical structures.

In radioactive decay, unstable atoms release energy and subatomic particles as they decay into more stable forms. This process occurs at a predictable rate, which can be used to determine the age of rocks and other materials.

In organic decay, biological matter breaks down into simpler compounds through the action of bacteria and other decomposers. This process is an essential part of the natural cycle of life and death, and it helps to recycle nutrients and other vital substances in ecosystems.

To find the time it takes for the mass to decay by a factor of 3/5, we can set up the following equation:

M(t) = (3/5)M(0)

\(120(\frac{625}{81} )^{t} = \frac{3}{5} \\\frac{625}{81}= \frac{3}{5}^{\frac{1}{t} } \\ln(\frac{625}{81})=ln(\frac{3}{5}^{\frac{1}{t} })\\\)

\(t=\frac{ln(\frac{625}{81})}{ln(\frac{3}{5})} = 4.27months\)

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