Please help me please help me please help me

Answer:

look at the attached picture

Answer:

X = -16.75

Step-by-step explanation:

Distribute.

(x + 12)23 = 23x + 276

12 + 5x -1 = 11 + 5x

Combine like terms.

23x - 2x - 5x = 16x

11 - (276 + 3+16 ) = -284

16x = -284

x = -17.75

Answer:

40

Step-by-step explanation:

4 + 8 / 2 * (6 + 3)

Parentheses first

4 + 8 / 2 * (9)

Then multiply and divide from left to right

4 + 4 * (9)

4 + 36

Then add and subtract

40

Answer:

40

Step-by-step explanation:

PEMDAS

(6+3) = 9                  4+8/2*(9)

8/2 = 4                     4+4*(9)

4*9 = 36                   4+36

36+4 = 40                 40

The amount of megabytes left to download is 6.8 mb

Mathematical operations include addition, subtraction, multiplication, and division. The expression x + y, for instance, consists of the terms x and y with an addition operator in between them.

In this situation, John wants to download an two applications that are 10 MB and the second application, 3.2 MB has been downloaded.

The application left to download will be:

= Total mb - mb download

= 10 - 3.2

= 6.8 mb

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Complete question

John wants to download an two applications that are 10 MB. For the second application, 3.2 MB has been downloaded. How much is left to download?

Answer:

y=93/5x+3

Step-by-step explanation:

Answer:

A. Ariel wants to find the difference of a number and 13.

Step-by-step explanation:

Just took the test

Answer:

A

Step-by-step explanation:

A EDGE 2021

The total pay when he sells 24 copies of Math exists Fun should be 3760.

An equation is a mathematical statement that proves two mathematical expressions are equal in algebra, and this is how it is most commonly used. A mathematical equation is a statement with two equal sides and an equal sign in between.

Numerical constants, symbolic names, mathematical operators, functions, and conditional expressions can all be found in expressions in some combination.

Calculation of the equation and the total pay:

His base salary is $2400, and he makes an additional $110 for every copy of Math is Fun he sells.

Here P means the total pay

So, here the equation be p = 2400 + 110 n

substitute the values in the above equation, we get

Now the total pay be

p = 2400 + 110(24)

simplifying the above equation, we get

= 2,400 + 2640

= 5040

The equation that should be related P to N should be considered as the 2400 + 110n.

Therefore, the total pay when he sells 24 copies of Math is Fun should be 5040.

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The total pay when he sells 24 copies of Math exists Fun should be 3760.

An equation is a mathematical statement that proves two mathematical expressions are equal in algebra, and this is how it is most commonly used. A mathematical equation is a statement with two equal sides and an equal sign in between.

Numerical constants, symbolic names, mathematical operators, functions, and conditional expressions can all be found in expressions in some combination.

Calculation of the equation and the total pay:

His base salary is $2400, and he makes an additional $110 for every copy of Math is Fun he sells.

Here P means the total pay

So, here the equation be p = 2400 + 110 n

substitute the values in the above equation, we get

Now the total pay be

p = 2400 + 110(24)

simplifying the above equation, we get

= 2,400 + 2640

= 5040

The equation that should be related P to N should be considered as the 2400 + 110n.

Therefore, the total pay when he sells 24 copies of Math is Fun should be 5040.

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Step-by-step explanation:

Hey there!

Please see attached picture for your answer!

Hope it helps!

Answer is in the attachment.

note:

make a slight change in question 1;

the equation of the line passing through the points P(-1,4) and Q(-4,-2) in the slope-intercept form is y = 2x + 6

To write the equation of the line  the points P(-1,4) and Q(-4,-2) in the slope-intercept form y = mx + b, we need to find the slope (m) and y-intercept (b) of the line.

The slope of the line passing through two points (x1, y1) and (x2, y2) is given by:

m = (y2 - y1) / (x2 - x1)

Substituting the coordinates of P and Q, we get:

m = (-2 - 4) / (-4 - (-1)) = -6 / -3 = 2

Now we can use the point-slope form of the equation of a line to find the y-intercept:

y - y1 = m(x - x1)

Substituting the coordinates of P and m, we get:

y - 4 = 2(x + 1)

Simplifying this equation, we get:

y = 2x + 6

Therefore, the equation of the line passing through the points P(-1,4) and Q(-4,-2) in the slope-intercept form is y = 2x + 6.

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Answer:

27/20

Step-by-step explanation:

hope this answer helps you

The depth of the 84 inches wide satellite dish that has the receiver located 15 inches above the vertex is 29.4 inches.

The location of the receiver = 15 inches above the vertex

Width of the dish = 84 inches

The receiver of a satellite dish is normally located at the focus (focal point).

Taking the shape of the satellite dish as a parabola, and writing the equation of the parabola as x² = 4•a•y, we have;

Coordinates of the focus = (0, a)

Where;

a = The distance of the focus above the vertex

Therefore;

a = 15 inches

The dish is horizontally spaced equally about the vertex.

The farthest point horizontally from the vertex, X, of the dish corresponds to the furthest vertically from the vertex, which is the maximum depth or height, Y.

At the maximum height, from the vertex, Y, (farthest point, vertically from the vertex), we have;

X = 84 ÷ 2 = 42

Which gives;

42² = 4 × 15 × Y

Y = 42² ÷ (4 × 15) = 29.4

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The profits at x = $185 is 0 and the graph is attached below:

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

Function is to model the profits of a new pet-monitoring system, so, if the profits are y and x then y = f(x)

The curve shows that y is negative at values of x< $95, then the profits increase when x varies between $95 and $140.

The profits reach a maximum at $140 and then the profits start to reduce as x increases again.

So, the profits at x = $185 is 0.

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Answer:

a on edge

Step-by-step explanation:

I js did it

The solution to the inequality x + 2 / x - 3 ≤ 0, expressed in interval notation, is (-∞, -2] ∪ (3, ∞).

To solve the inequality x + 2 / x - 3 ≤ 0, we can first find the critical points by setting the numerator and denominator equal to zero. The critical points are x = -2 and x = 3.

We can then create a sign chart to determine the intervals where the expression x + 2 / x - 3 is positive or negative. Testing values within each interval, we find that the expression is positive to the left of -2 and between -2 and 3, and negative to the right of 3.

Finally, we note that the inequality is satisfied when the expression is less than or equal to zero. Therefore, the solution in interval notation is (-∞, -2] ∪ (3, ∞), indicating the values of x that make the inequality true.


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Answer:

Step-by-step explanation:

32

Answer: 18

Step-by-step explanation:

11/6 * 3/3 = 33/18

4/9 * 2/2 = 8/18

Hope this helps! Please give brainliest :)

Answer:

20 cm²

Step-by-step explanation:

L=2+3 =5cm

w= 4cm

area= 5×4

= 20cm²

Answer:

14

Step-by-step explanation:

4 x 2 = 8

3 x 2 = 6

8 + 6 = 14

The true statement is (C) the biased coin has about a 33% probability of displaying tails.

To find the true statement:

Therefore, the true statement is (C) the biased coin has about a 33% probability of displaying tails.

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The correct question is given below:
A coin is biased such that it results in 2 heads out of every 3 coin flips, on average. Which statement is true?

A.)The theoretical probability of getting heads from an unbiased coin is about 66%.

B.)The sequence HTHTTHTTT is valid for the biased coin.

C.)The biased coin has about a 33% probability of displaying tails.

D.)The sequence HTTHTHTHT is valid for the biased coin.

The subtended arc formed by the angle's rays is 175 times as long as 1/360th of the circle's circumference

Circumference is the perimeter of the circle or it is the length of boundary of the circle and is normally denoted by P.

formula of circumference(P) = 2πr

where r is radius of the circle.

let the circumference of the circle be 360x

then 1/360th of the circle's circumference = \(\frac{1}{360 } * 360x = x\)

length of subtended arc by \(175^0\)  = \(\frac{360x}{360} * 175\) = 175x

as total angle is 360 degree is so each degree has a length of  360x/360

and hence total  subtended arc by 175 degree is  \(\frac{360x}{360} * 175\)

where x = 1/360 th of the circle circumference so

so the subtended arc by 175 degree  is 175x which is 175 times as long as 1/360 th of the circle circumference.    

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Answer:

Spell correctly please maybe I can help you

_____________________

Solution:

Exact Form:

\(\frac{4}{7}-(-\frac{3}{8}) = \frac{53}{56}\)

______________________

(^Note^)

To subtract fractions, find the LCD (Least Common Denominator), then combine.

Hope this helps! If so, please lmk! Thanks and good luck!

Answer: 53/56

Step-by-step explanation:

sorry if im wrong but since there is 2 negative signs it is going to become positive. so..

4/7+3/8

then make the denominators the same (56)

then multiply the numerators by the number you multiplied for the denominator for the question.

answer: 32/56+21/56 = 53/56

Law of Exponent

\( \displaystyle \large{( \frac{a}{b} )^{n} = \frac{ {a}^{n} }{ {b}^{n} } }\)

From the expression.

\( \displaystyle \large{( \frac{2}{3} )^{2} = \frac{ {2}^{2} }{ {3}^{2} } = \boxed{\frac{4}{9} } }\)

Jerome's mistake is that Jerome forgot to evaluate 2^2 or forgot to add 2^2. The denominator is correct but the numerator is wrong.

The perimeter of triangle is 66.24 units.

What is triangle?

In Euclidean geometry, any 3 points, once non-collinear, verify a unique triangle and at the same time, a unique plane

Main body:

according to question :

c = 28

let the vertices be A,B,C

∠A= 30°

by using trigonometric ratios,

BC/ AB = sin30°

AB = C = 28

BC/28 = sin30°

BC = 28*sin30°

BC= 28*(1/2)

BC = 14

similarly

AB /CA = cos 30°

28/CA = √3/2

CA = 28*√3/2

CA = 14/√3

CA = 24.24

Hence , perimeter = AB +BC +CA = 28+14+24.24

                              =66.24 units

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According to the given statement the option B and C are correct:

b) unpaired t-test

c) one-sample t-test

We will apply an unpaired test in this situation because both populations are independent and unrelated to one another, making it impossible to pair the data from the two populations.

Consider the statement, "The mean from population A is bigger than the mean from population B," for example. This suggests that we'll utilize a single-tailed, unpaired test. Therefore, option d and b may be the best pairing.

To ascertain whether an unknown population mean differs from a given value, the one-sample t-test is a statistical hypothesis test.

The t-value is calculated using your sample data from the two groups and the 2-sample t-test. The procedure is quite comparable to the 1-sample t-test, and the signal-to-noise ratio can still be compared. The 2-sample t-test necessitates independent groups for every sample, unlike the paired t-test.

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The complete question you are looking for is:

In order to test if the mean from Population A is greater than the mean from Population B what kind of t-test would you use? (can be any combination of answers)

a) two-tailed t-test

b) unpaired t-test

c) one-sample t-test

d) one-tailed t-test

e) paired t-test

Required area of the composite figure is 69 cm²

What is area of a composite shape?

the area covered by any composite shape. A composite shape is a shape in which some polygons are put together to form the required shape is called the area of composite shapes . These figures can consist of combinations of triangles, rectangles, squares etc. To determine the area of composite shapes, divide the composite shape into basic shapes such as square, rectangle,triangle, hexagon, etc.

Basically, a compound shape consists of basic shapes put together. This is also called a "composite" or "complex" shape. This mini-lesson explains the area of compound figures with solved examples and practice questions.

Here in this figure, we have two figures.

First one is rectangle and second one is triangle.

Length and breadth of the rectangle are 12 cm and 4 cm respectively.

So, area = Length × Breadth = 12 × 4 = 48 cm²

Again height of the triangle is (11-4) = 7 cm and base of the triangle is (12-6) = 6 cm.

So, area of the triangle = 1/2 × 7 × 6 = 3×7 = 21 cm²

Now if we add both area of rectangle and triangle then we will get area of the composite figure.

So, required area of the composite figure is ( 48+21) = 69 cm²

Therefore, option A is the correct option.

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To find the subtransient current in per unit for a three-phase fault on bus 4, we need to calculate the fault current using the bus impedance matrix.

Given bus impedance matrix Zbus:

| j0.15 j0.08 j0.04 j0.07 |

| j0.08 j0.15 j0.06 j0.09 |

| j0.04 j0.06 j0.13 j0.05 |

| j0.07 j0.09 j0.05 j0.12 |

To find the fault current on bus 4, we need to find the inverse of the Zbus matrix and multiply it by the pre-fault voltage vector.

The pre-fault voltage vector V_pre-fault is given as:

| 1.0/0° |

| 1.0/0° |

| 1.0/0° |

| 1.0/0° |

Let's calculate the inverse of the Zbus matrix:

Zbus_inverse = inv(Zbus)

Now, we can calculate the fault current using the formula:

I_fault = Zbus_inverse * V_pre-fault

Calculating the fault current, we have:

I_fault = Zbus_inverse * V_pre-fault

Substituting the values and calculating the product, we get:

I_fault = Zbus_inverse * V_pre-fault

= Zbus_inverse * | 1.0/0° |

| 1.0/0° |

| 1.0/0° |

| 1.0/0° |

Please provide the values of the Zbus matrix and the pre-fault voltage vector to obtain the specific values for the fault current and the per-unit current from generator 2.

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Answer:

\((2 \times 8) + ( \frac{1}{2} \times 2 \times 4) \\ = 16 + 4 \\ = 20m {}^{2} \)

Answer:

150 degrees

Step-by-step explanation:

5 + 1 = 6

180 : 6 = 30

30 x 5 = 150

Answer:

a

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan15° = \(\frac{opposite}{adjacent}\) = \(\frac{20}{x}\) ( multiply both sides by x )

x × tan15° = 20 ( divide both sides by tan15° )

x = \(\frac{20}{tan15}\) ≈ 74.6 ft ( to the nearest tenth of a foot )

The correct matching relating the correlation coefficients are given as follows:

A correlation coefficient is an index that measures the association between multiple variables.

The closer the absolute value of the correlation coefficient is of 1, the stronger is the association, meaning that the statement has more certainity.

Closer to zero, the correlation coefficient gives no confidence of the assessment, and values above 0.6 are considered as indicating strong correlation.

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The maximum rate of change of f at the point (0, 4) is 28, and it occurs in the direction of the vector (28, 0).

To find the maximum rate of change of the function f(x, y) = 7 sin(xy) at the point (0, 4), we need to compute the gradient vector ∇f(x, y) and evaluate it at the given point.

The gradient vector ∇f(x, y) of a function f(x, y) is given by the partial derivatives with respect to x and y:

∇f(x, y) = (∂f/∂x, ∂f/∂y)

Taking the partial derivatives of f(x, y) = 7 sin(xy):

∂f/∂x = 7y cos(xy)

∂f/∂y = 7x cos(xy)

Now, let's evaluate the gradient vector at the point (0, 4):

∇f(0, 4) = (7(4)cos(0), 7(0)cos(0))

= (28, 0)

The maximum rate of change of f at the point (0, 4) occurs in the direction of the gradient vector ∇f(0, 4) = (28, 0). The magnitude of this vector represents the maximum rate of change, and the direction is given by the direction of the vector.

The magnitude of the gradient vector is √(\(28^{2}\) + \(0^{2}\)) = √(784) = 28.

Therefore, the maximum rate of change of f at the point (0, 4) is 28, and it occurs in the direction of the vector (28, 0).

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