Can someone help me with this

The description of each equation in comparison with its' right hand side is;

A) True for all values of x.

B) True for no values of x.

C) True for no values of x.

D) True for no values of x.

E) True for all values of x.

F) True for no values of x.

G) True for no values of x.

H) True for all values of x.

A) We are given the equation;

7x - 5

This can also be written as; -5 + 7x and so the right hand side is true.

B) We are given the equation as 5x - 7.

There is no 4 in the equation and so the right hand side is wrong.

C) We are given the equation as -3x + 5.

The coefficient of x is -3 and not -4 and so the right hand side is wrong.

D) We are given the equation as;

3x - 32 + 4(4x - 2463)

By basic inspection, the right hand side cannot be true because we can see a very huge value in this bracket.

E) We are given the equation as 7x - 9 + 3(6x + 3)

Expanding the bracket gives;

7x - 9 + 18x + 9 = 25x

Thus, the right hand side is correct.

F) We are given the equation as 3x + 9

The equation does not contain -4 and 20 and so the right hand side is wrong.

G) We are given the equation as 10(2x - 3)

Multiplying the bracket gives 20x - 30. Thus, the right hand side is wrong

H) We are given the equation as 4(4x + 3) - 3x

Multiplying out the bracket gives us;

16x + 12 - 3x = 13x + 12

Thus, the right hand side is correct.

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As per the concept of complex number, the equivalent expression to the given complex number is: –16 + 30i.

In math, the term complex number is defined as the following form:

=> a+bi,

where a and b are real numbers.  

where the variables: a is the real part and bi imaginary part.

Here we have given that the complex expression: (3+5i)²

And we need to find the equivalent expression for this one.

Here we know that the same properties used for real numbers can be applied to complex numbers.

According to this rule, we have to solve the operations math with these numbers, it is important to know that i²= -1.

As we know that the algebraic expressions are considered equivalent when they are equal.

Therefore, for solving this question, you should:

We have to apply the power rules and then  select the option that is equal to the result found.

= > (3+5i)²

Now it can be expanded like the following,

=> 9+30i+25i²

Apply the rule,

=> 9+30i+25*(-1)

=> 9+30i-25

=> -16 + 30i

Therefore, option (a) is correct.

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Answer:

Step-by-step explanation: Step one is distributive property because you distribute the numbers inside the parenthesis. Step 2 is communitive property because you switch the order. Step 3 is conbine-like terms. Step 4 is the addition property of equality. Step 5 is the division property of equality. Hope this helps!

The remainder and quotient are written as the following partial fractions:

Quotient: [tex]4x + 1[/tex]

Reminder: [tex](18x - 3)[/tex]

Divide the leading term of the numerator by the leading term of the denominator to obtain the first term of the quotient:

[tex]\dfrac{8x^3} { 2x^2} = 4x[/tex]

Multiply the entire denominator by the first term of the quotient, then subtract it from the numerator:

[tex](4x)(2x^2 - x - 21) = 8x^3 - 4x^2 - 84x\\\\(8x^3 - 2x^2 - 67x - 24) - (8x^3 - 4x^2 - 84x) = 2x^2 + 17x - 24[/tex]

With the new numerator, repeat steps 1 and 2 [tex](2x^2 + 17x - 24)[/tex] and the original denominator [tex](2x^2 - x - 21)[/tex]:

[tex]\dfrac{2x^2} { 2x^2} = 1\\(1)(2x^2 - x - 21) = 2x^2 - x - 21\\(2x^2 + 17x - 24) - (2x^2 - x - 21) = 18x - 3[/tex]

The resulting numerator [tex](18x - 3)[/tex] is the remainder.

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Answer:

y = -10x + 109

Step-by-step explanation:

Given equation,

→ y - 9 = -10(x - 10)

The slope-intercept form is,

→ y = mx + b

Rewrite in slope-intercept form,

→ y = mx + b

→ y - 9 = -10(x - 10)

→ y - 9 = -10x + 100

→ y = -10x + 100 + 9

→ [ y = -10x + 109 ]

Hence, answer is y = -10x + 109.

Answer: I Do not know specifically but If we are talking about rates/per hour the answer is 55 Per hour

Step-by-step explanation:

165 miles ÷ 3 hours because It may be talking about rates. Per "HOUR"

By using simultaneous linear equation, it can be calculated that-

200 adult tickets and 400 student tickets were sold

In another performance, ticket sale falls $1320 below the goal of $3300

What is simultaneous linear equation?

At first it is important to know about linear equation

Equation shows the equality between two algebraic expressions by connecting the two algebraic expressions by an equal to sign.

A one degree equation is known as linear equation.

Two or more linear equations, which can be solved together to obtain common solution are known as simultaneous linear equation.

Here, a simultaneous linear equation needs to be solved

Here, d represents the number of adult tickets and s represents the number of student tickets

Their auditorium holds 600 people

d + s = 600 ..... (1)

Price of adult ticket = $7.50

Price of student ticket = $4.50
Total price = $(7.50d + 4.50s)

By the problem,

7.50d + 4.50s = 3300

5d + 3s = 2200 ..... (2)

Multiplying (1) by 3

3d + 3s = 1800.... (3)

Subtracting (3) from (2)

2d = 400

[tex]d = \frac{400}{2}[/tex]

d = 200

Putting the value of d in (1)

200 + s = 600

s = 600 - 200

s = 400

Now,

At one performance there were two times as many student tickets sold as adult tickets.

Total tickets sold = d + 2d = 3d

By the problem-

3d = 360

d = [tex]\frac{360}{3}[/tex]

d = 120

s = 2 [tex]\times[/tex] 120 = 240

Number of student ticket sold = 240

Number of adult ticket sold = 120

Total cost = 240 [tex]\times[/tex] 4.50 + 120 [tex]\times[/tex] 7.50

                 = $1980

Fall in ticket sale = $(3300 - 1980) = $1320

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The assumptions been met (0.6581,0.7819).

What is American adults?

In 2020, the U.S. Census Bureau counted 331.4 million people living in the United States; more than three-quarters (77.9%) or 258.3 million were adults, 18 years or older — a 10.1% increase from 234.6 million in 2010.

Given that.

[tex]$$\begin{aligned}& p=0.72 .(1-p)=1-0.72=0.28 \\& n=200 .\end{aligned}$$[/tex]

At [tex]$95 \%$[/tex] confidence level x value is 1.96

z=1.96

So r

A 95 % confidence interval bor percent of American adults who beleive in Aliens is,

[tex]$$\begin{gathered}p \pm 2 \sqrt{\frac{p \times q}{n}} \\\therefore 0.72+1.96 \sqrt{\frac{0.72 \times 0.28}{200}} \\\therefore 0.72 \pm 1.96 \sqrt{0.0010} \\0.72 \pm 0.0619 \\\therefore \quad(0.6581,0.7819)\end{gathered}$$[/tex]

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Answer: 1

Step-by-step explanation:

Answer:

totally not confused whatso ever

Step-by-step explanation:

Hypothesis test used to test the batting average of the two given team national league and American league is given z-test.

As given in the question,

Given : Mean batting for American league is not equal to Mean batting for National league.

Therefore, hypothesis test used to test the batting average of the national league and American league is given z-test.

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Answer:

x=43

Step-by-step explanation:

Since the two interior angles of a triangle always add up to the exterior angle (d=a+b btw if u dont understand what i mean), x+90=133

x=133-90

x=43

Answer:

65 = l + m + n

Step-by-step explanation:

The perimeter of a triangle is the sum of its 3 sides:

 65 = l + m + n

Answer: 2

Step-by-step explanation:

[tex]\frac{8}{9} \approx 1\\\\\frac{9}{10} \approx 1\\\\\therefore \frac{8}{9}+\frac{9}{10} \approx 1+1=2[/tex]

Answer:

Step-by-step explanation:

la première planche = 2x

la deuxième = x

la troisième = x-10

1ere planche + 2eme planche + 3eme planche = 50 pouces

donc :

(2x) + x + (x-10) =50

4x-10 = 50

4x-10+10 = 50 +10

4x = 60

4x diviser par 4 = 60 diviser par 4

x=15

la première planche = 30

la deuxième = 15

la troisième = 5

30+15+5=50

The appropriate statistical conclusion is that there is sufficient evidence to conclude that the means are different.

The null and the alternative hypothesis for this problem are given as follows:

The p-value and the significance level for this problem are given as follows:

As the p-value is less than the significance level, there is enough evidence to reject the null hypothesis, thus the appropriate statistical conclusion is that there is enough evidence to conclude that the means are different.

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Last night, the two dinner specials at Dwayne's favorite restaurant were salmon filet and steak. The restaurant served 25 specials in all, 24 percent of which were salmon filets 6 salmon filets did the restaurant serve.

10%, a comparative figure denoting one hundredth of any quantity. One percent (symbolized as 1%), being the hundredth component, is represented as 100 percent, while 200 percent signifies twice the amount specified.

A percentage in mathematics is a figure or ratio that may be stated as a fraction of 100. If we need to determine a percentage of a number, we should divide it by 100 and multiply the result.

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The ratio of any two right-angled triangle sides may be used to compute trigonometric ratios.

Given details :

The measurement of the given angle is 30 degree.

Here we use trigonometric ratio rule which is sin theta= opposite/hypotenuse

Here theta = 30 degree, opposite =7 and hypotenuse =a

So we get

sin 30 = 7/a

a= 7/sin 30

And value of sin 30 = 0.5

So we get , a = 7/0.5 = 14

So the value of a is 14 .

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Answer:a,b,c

Step-by-step explanation:easy work just trust me

Answer:

Yes

Step-by-step explanation:

Since the point is in the intersection area (purple) of the lines it is a solution.

Answer:

False!

Step-by-step explanation:

See picture for examples.

Simple random sampling is a sort of probability sampling in which a subset of participants from a population is randomly chosen by the researcher. There is an equal opportunity for selection for every person in the population. Then, information is gathered from as much of this random subset as is feasible.

What is simple random sampling, and why is it significant?

One technique researchers employ to select a sample from a broader population is a simple random sampling.

                               If there is an equal chance that any subject in a population will be chosen, this strategy is effective. In order to draw general conclusions about a group, researchers choose basic random sampling.

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A rectangle is transformed according to the rule R0, 90º.

What does parallelogram mean ?

A quadrilateral with two sets of parallel sides is known as a parallelogram. A parallelogram has opposite sides that are the same length and angles that are the same size.

                 Additionally, the internal angles on the same transverse side are supplementary. 360 degrees is the sum of all interior angles.

We are given that the rotation is

(x,y) --------> (x,y)

This means that the point is rotated back into its original position.

This means that full rotation occurred.

Since the full rotation is 360°,

For the other options:

Rotation 90° gives:

(x,y) ----------> (-y,x)

Rotation 180° gives:

(x,y) ----------> (-x,-y)

Rotation 270° gives:

(x,y) ---------> (y,-x)

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Answer:

1/ In decimal, 3/4 is 0.75

2/ In percent, 3/4 is 75%

Step-by-step explanation:

1/ take 3 divided by 4, and you will get 0.75 as an answer for decimal

2/ For percent, 3/4 is simple for of 75%/100%

a. In order to factor the equation, the vertex form needs to be expanded to the standard form first, to obtain the factors of the equation

b. The parabola is easily graphed with the information on the vertex given in the vertex form of the quadratic equation

c. The vertex, minimum or maximum of the parabola are easily obtained in the vertex form of the quadratic equation

d. The quadratic formula is defined based on the standard form of the quadratic equation

Answer:

[tex]\huge{\boxed{\text{A) Standard form}}}\\\huge{\boxed{\text{B) Vertex Form}}}\\\huge{\boxed{\text{C) Vertex Form}}}\\\huge{\boxed{\text{D) Standard Form}}}\\[/tex]

Step-by-step explanation:

Vertex form is represented as: [tex]f(x) = a(x-h)^2+k[/tex], where the vertex of the parabola is (h, k).

Standard form is represented as [tex]f(x) = ax^2+bx+c[/tex], where a, b, and c are constants.

A) When factoring an equation, the sum of the roots is equal to b and the sum of the roots is equal to c, meaning standard form is the beneficial.

B) When graphing a parabola, vertex form is extremely beneficial, as it provides the vertex of the parabola, and the direction in which it opens.  If "a" is positive, the vertex opens upward, while when "a" is negative, the vertex opens downward.  As such, graphing is greatly eased with this information.

C) As is evident from the name, vertex form is the best for identifying the vertex of a parabola, as it is explicitly shown via the constants h and k.

D) The quadratic formula directly uses the constants a, b, and c, so working in standard form is more beneficial, as it removes the effort of solving for each constant.

Hope it helps :) and let me know if you want me to elaborate.

Answer: 8.20

Step-by-step explanation:

1kg = 1000g

take 650 divided by 1000 = 0.65kg

Then take 5.33 divided by 0.65 = 8.20

The height of the drone would be about 132.92 feet.

What is a tangent ratio in trigonometry?

The tangent ratio is the ratio of the opposite side to the adjacent side of a right triangle. Same to the sine and cosine ratios, tangent ratios can be used to calculate the angles and sides of right-angle triangles.

Given that the angle of elevation from the first and second base to the drone is 77° 9' and 65° 45' 18", respectively.

[tex]77^o9'=77\frac{9}{60}=77.15^o[/tex]

[tex]65^o 45' 18"=65+\frac{45}{60}+\frac{18}{3600}\\\\65^o 45' 18"=65.755^o[/tex]

tan 77°9 = h/AD        and        tan 65.75°=h/DB

AD + DB = 90

h/tan 77°9 + h/65.75° = 90

Solving this we get

h ≈ 132.92 feet.

Hence, the height of the drone would be about 132.92 feet.

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In the equation y = mx + b, the meaning of the m and the b is

A linear function consists of functions where the variables has exponents of 1.

The graph of linear functions is a straight line graph and the relationship is expressed in the form.

y = mx + b

Information gotten from the question include

In the equation y = mx + b

m = ? and b = ?

y = mx + b

definition of variable to suit the problem

y = output variable

m = slope

x = input variable

b = y intercept

therefore m and b are the slope and y intercept respectively

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Fraction of the sensors on the given satellite which have been upgraded is equal to  option D. 1/7.

As given in the question,

Total number of modular units = 30

Let 'n' be the total number of upgraded sensors available on the entire satellite

Number of non-upgraded sensors available on one unit = ( 1/5)n

                                                                                         = x/5

Number of non-upgraded sensors available on 30 modular unit

= 30n /5

= 6n

Total number of non- upgraded and upgraded sensors makes one unit

⇒n + 6n =  1

⇒7n = 1

Fraction of upgraded sensors are:

⇒ n = 1/7

Therefore, the fraction of the sensors available on the satellite and are upgraded is equal to option D. 1/7.

The above question is incomplete , the complete question is:

A satellite is composed of 30 modular units, each of which is equipped with a set of sensors, some of which have been upgraded. Each unit contains the same number of non-upgraded sensors. If the number of non-upgraded sensors on one unit is 1/5 the total number of upgraded sensors on the entire satellite, what fraction of the sensors on the satellite have been upgraded?

A. 5/6     B. 1/5      C. 1/6     D. 1/7        E. 1/24

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The plane 13x + 11y + 20z = 39 is where the line x = t, y = 1 + t, and z = 1 t cross (2,3,-1).

A plane is an infinitely long, Euclidean, two-dimensional surface in mathematics. A plane is a point, a line, and three-dimensional space's equivalent in two dimensions. In geometry, a plane is a surface made up of all the straight lines connecting any two locations on it. It is, in other words, a level or flat surface. A plane is uniquely defined in a Euclidean space of any number of dimensions by one of the following: three non-collinear points are used.

Here,

13t+11(1+t)+20(1-t)=39

13t+11+11t+20-20t=39

4t+31=39

4t=8

t=2

x=2, y=3, z=-1

The line x = t, y = 1 + t, z = 1 − t intersects the plane 13x + 11y + 20z = 39 at (2,3,-1).

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The lengths of the parts of the median lines FA, BE, CD, that extends from the vertices of the triangle ΔACE to the midpoints of the sides EC, AE, and AC are;

A. G is called the centroid of the triangle ΔACE

B. G is also the center of gravity of a uniform density triangle. The correct option is True; T

C. GF = 5

D. DC = 18

E. GB = 7

A median of a triangle is a line segment that extends from a vertex of a triangle to the midpoint of the side opposite the vertex

The midpoints of the sides of the triangle = F, B, and D

The midpoint of EC = F

The midpoint of AC = B

Midpoint of AE = D

A. The lines CD, BE, and FA are called median lines

The point of intersection of the three median lines of a triangle is the centroid of the triangle.

B. The centroid of a triangle and center of gravity of the triangle are located at the same position in a uniformly dense triangle, therefore, G is the center of gravity, True, T

C. In the relationship of a median, we get;

AG = (2/3)·FA

GF =  (1/3)·FA

Therefore, AG = 2·(GF)

GF = 0.5 × AG

GF = 0.5 × 10 = 5

GF = 5

D. DG = (1/3) × DC

Therefore; DC = 3 × DG

DG = 6, therefore, DC = 3 × 6 = 18

DC = 18

E. EB = 21

GB = (1/3) × EB

Therefore; GB = (1/3) × 21 = 7

GB = 7

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