What is the value of x?


5

6

2

-2

Answer:

The real part is -7

The imaginary part 8i

Step-by-step explanation:

A complex number is in the from a +bi

The real part is a and the imaginary part is bi

-7+8i

The real part is -7

The imaginary part 8i

Answer:

The correct answer option is 12.5 cm[tex]^2[/tex].

Step-by-step explanation:

We are given two triangles that are similar with one of the corresponding sides with known values.

The ratio of the corresponding sides of the smaller triangle to the larger triangle is [tex]\frac{16}{64} =\frac{1}{4}[/tex]. So the ratio between the areas of these triangles will be [tex]\frac{1}{4^2} =\frac{1}{16}[/tex].

If the area of the larger triangle is 200 cm[tex]^{2}[/tex] then the area of the smaller triangle will be = [tex]\frac{1}{16} *200=12.5[/tex].

Therefore, the area of the smaller triangle is 12.25 cm[tex]^2[/tex].

Formula to find Area of a triangle is

A=(height×base)/2

base of bigger triangle is=64cm^2

base of smaller triangle is=16cm^2

Area of bigger triangle is =200cmCm^2

area of smaller triangle=?

we imagine

height = base

then area of bigger trianglewillbe=64*64/2=2048

and area of smallertriangle will be=16*16/2==128

but we are given thatarea of bigger triangle is 200

when we  divide 2048/10

it approximately gives 200

similarly when we divide 128/10

it approximately gives 12.5cm^2

hence area of smaller triangle is 12.5cm^2

Answer: Growth factor is 1.03 per year.

Correct option is C option.

Step-by-step explanation:

Given that water usage is increasing by 3% per year.

Time is measured in the years as given.

We need to find the growth factor for 3% increase per year.

We know a percent can be written decimal form by dividing by 100.

Therefore, 3% could be written as 3/100 = 0.03.

But the water usage would be increase by the factor of 1+0.03 that is 1.03.

The equation for this problem is x=25(m)+40

If the value of x=240, then the value of m=8.

Answer:

a = 8

Step-by-step explanation:

Put the given information into the function equation and solve for a.

f(x) = a/(x-h) +k . . . . for (h, k) = (4, 2) and (x, y) = (12, 3)

3 = a/(12 -4) +2 . . . . . . . givens substituted in

1 = a/8 . . . . . . subtract 2

8 = a . . . . . . . multiply by 8

Answer:

Blue

Step-by-step explanation:

2>0

Answer:

[tex]\frac{1}{12}[/tex]

Step-by-step explanation:

P(tail) = [tex]\frac{1}{2}[/tex]

P(2) = [tex]\frac{1}{6}[/tex]

P(tail and 2 ) = [tex]\frac{1}{2}[/tex] × [tex]\frac{1}{6}[/tex] = [tex]\frac{1}{12}[/tex]

To calculate the amount that should be deposited today in an account that earns 3% compounded semiannually to accumulate to $8000 in three years, we can use the compound interest formula.

To calculate the amount that should be deposited today in an account that earns 3% compounded semiannually to accumulate to $8000 in three years, we can use the formula for compound interest: A = P(1 + r/n)^(nt), where A is the future value, P is the principal, r is the interest rate, n is the number of compounding periods per year, and t is the number of years. In this case, the future value (A) is $8000, the interest rate (r) is 3% or 0.03, the number of compounding periods per year (n) is 2 (semiannual compounding), and the number of years (t) is 3. Plugging these values into the formula, we get:

A = P(1 + r/n)^(nt)

$8000 = P(1 + 0.03/2)^(2*3)

$8000 = P(1 + 0.015)^(6)

$8000 = P(1.015)^(6)

To find the value of P, we divide both sides of the equation by (1.015)^6: P = $8000 / (1.015)^6. Using a calculator, we find that P ≈ $7383.42. Therefore, approximately $7383.42 should be deposited today in the account.

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Answer:

9,839 ft

Step-by-step explanation:

Answer:

Triangle ABE is congruent to triangle CBD.

Step-by-step explanation:

Given two congruent triangles BAE and BCD where B is an apex of both triangles.

Given AB=BC, CD=AE, BE=BD

& also ∠AEB=∠BDC, ∠DCB=∠BAE, ∠ABE=∠CBD

By CPCT i.e. Corresponding parts of corresponding triangles

Correspondimg sides and angles area in the same position or spot in two different triangles.

Hence, Triangle ABE is congruent to triangle CBD.

Answer:

1987 + 1257 = 3247

Step-by-step explanation:

We are going to use a base number to start from. That number is 1,987 where the thousand is 1, the hundred is 9 and the ten is 8.

Then we are going to add 1,257 which will be 3,247. Thus we will have a new thousand which is 3 (formerly 1), a new hundred which is 2 (formerly 9), and finally, a new ten which is 5 (formerly 7).

1987 + 1257 = 3247 gives you a new thousand, a new hundred and a new ten.

Answer:

Step-by-step explanatcagion:

Answer:

d=1

Step-by-step explanation:

If North is i and South is -i

East is 1 and West is -1

The robot is facing East as it enters the maze, it will have a starting value of 1

Answer:

The value of d at the start of the maze will be 1 because 1 represents East .

Answer:

Step-by-step explanation:

Sales of the chocolate ice cream is 45%, 30% for strawberry and 25% (100%-45%-30%) of vanilla.

Percentages of cone sales for chocolate, strawberry and vanilla are 75%, 60% and 40%respectively.

A. Probability chocolate chosen: 45%=0.45

B. Probability strawberry chosen: 30%=0.30

C. Probability vanilla chosen:25%=0.25

D. Probability ice cream on a cone: 75%×45%+60%×30%+40%×25%

                                                          =0.75×0.45+0.60×0.30+0.40×0.25

                                                          =0.3375+0.18+0.1

                                                          =0.6175

E. Probability ice cream in a cup: 1- Probability ice cream in a cone

                                                     =1-0.6175

                                                     =0.3825

Probability that the ice cream sold on a cone and was strawberry flavoured is : 30%×60%

=0.30×0.60

=0.18

Answer: 0.18.

Step-by-step explanation: Let us define the following events

A= event that chocolate chosen,

B=event that strawberry chosen,

C=event that vanilla chosen,

D=event of choosing ice-cream on a cone

and

E=event of choosing ice-cream on a cup.

Then, according to the given information, we have

P(A)=0.45, P(B)=0.30, P(C)=0.25, P(A\D)=0.75, P(B\D)=0.60 and P(C\D)=0.40.

Therefore, the probability that the ice-cream was sold on a cone and was strawberry flavour is given by

[tex]P(B\cap D)=P(B)\times 0.60\\\Rightarrow P(B\cap D)=0.30\times 0.60\\\Rightarrow P(B\cap D)=0.18.[/tex]

Thus, the required probability is 0.18.

The parametric equations that represent the sphere surface between the planes z=±6 are x = 12*sin(θ)*cos(φ), y = 12*sin(θ)*sin(φ), and z = 12*cos(θ), with θ and φ being between π/3 and 2π/3, and 0 and 2π respectively.

This question involves a mathematical concept known as parametric representation of a surface, specializing in spheres and planes. In a 3D coordinate system, the equation of a sphere is given by x² + y² + z² = r² where r is the radius of the sphere, but we restrict the z variable to lie in a certain range, which is between -6 and 6 in this situation.

To represent the sphere in parametric form, we often use spherical coordinates. The relationships between Cartesian coordinates and spherical coordinates are as follows: x = r*sin(θ)*cos(φ), y = r*sin(θ)*sin(φ), z = r*cos(θ). Here r = √144 =12, is the radius of the sphere.

Given the restrictions z = ±6, we have cos(θ) = ±6/12 = ±1/2, or θ = π/3 and 2π/3. So, the spherical coordinates range within 0 <= φ <= 2π and π/3 <= θ <= 2π/3.

This gives the parameters of the restricted surface in terms of θ and φ those are as follows: x = 12*sin(θ)*cos(φ), y = 12*sin(θ)*sin(φ), and z = 12*cos(θ).

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The parametric equations which represent the part of the sphere x² + y² + z² = 144 that lies between the planes z = -6 and z = 6 are: x = 12*sin(θ)*cos(Ď•), y = 12*sin(θ)*sin(Ď•), z = 12*cos(θ), with 60° ≤ θ ≤120° and 0° ≤ Ď• ≤ 360°.

The question asks for a parametric representation of part of a sphere lying between two planes. The given sphere equation is x² + y² + z² = 144, and the two planes are defined by z = -6 and z = 6. This is a common problem in multivariable calculus, and we solve it using spherical coordinates. In spherical coordinates, x= r*sin(θ)*cos(Ď•), y= r*sin(θ)*sin(Ď•) and z= r*cos(θ) where r is the radius, θ is the inclination angle, and Ď• is the azimuthal angle. For the given sphere, r = √144 = 12.

The bounds for z adds constraints to our inclination angle θ. Given -6 ≤ z ≤ 6, we determine corresponding bounds on θ. For z = r*cos(θ), we have -6 ≤ 12cos(θ) ≤ 6, or -1/2 ≤ cos(θ) ≤ 1/2. This yields θ values between 60° and 120°. The parametric equations describing the part of the sphere between the planes z = -6 and z = 6 are:

x = 12*sin(θ)*cos(Ď•)

y = 12*sin(θ)*sin(Ď•)

z = 12*cos(θ)

where 60° ≤ θ ≤120° and 0° ≤ Ď• ≤ 360°.

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Answer:

y = -.75 x

Step-by-step explanation:

To determine if y varies directly with x, we look at y/x and see if it is a constant

y/x = 2.25/-3 = -.75

     = -.75/1 = -.75

     =-3/4 = -.75

Since it is a constant, it has direct variation.  The constant of variation is -.75

y = -.75 x

Answer:

Point B is Point A reflected across the y-axis.

Step-by-step explanation:

Answer:

B is A reflected across the y-axis; only the signs of the x-coordinates of A and B are different.

Step-by-step explanation:

When a point is reflected across the y-axis, the x-coordinate of the point is negated.  Algebraically,

(x, y)→(-x, y)

Point A is located at (-1, -3.5) and point B is located at (1, -3.5).  The only difference between the two points is that the x-coordinate is negated; this means it is a reflection through the y-axis.

[tex]\bf \begin{cases} x=7\implies &x-7=0\\ x=-3\implies &x+3=0\\ x=2\implies &x-2=0 \end{cases}~\hspace{7em}(x-7)(x+3)(x-2)=\stackrel{y}{0} \\\\\\ (x^2-4x-21)(x-2)=y \\\\\\ x^3-4x^2-21x-2x^2+8x+42=y\implies x^3-6x^2-13x+42=y[/tex]

1. EG = HJ (Given)

2. EG = EF + FG, HJ = HF + FJ (Seg. Add. Prop.)

3. EF + FG = HF + FJ (Subst. Prop.)

4. EF =  FJ (Given)

5. FG = HF (Subtraction Prop.)

It's challenging to demonstrate that FG equals HF as these may represent different elements or variables in different mathematics or physics contexts. At its simplest, FG seems to represent the gravitational force between two masses, and HF would need to represent the same force to hold true.

The equation given seems to pertain to gravitational forces where FG represents the gravitational force between two masses, electron and proton.

Given that FG = GMM where G is the gravitational constant (6.67×10-¹1 N·m²/kg²), m and M represent the masses of the electron and proton, to prove that FG=HF, it implies that HF represents the same gravitational pull.

However, without more detailed context or information, I can't further demonstrate or prove that FG does equal HF as these terms may refer to different elements or variables in different contexts of mathematics or physics problems.

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Answer:

Option (b) is correct.

The matrix A is [tex]\begin{pmatrix}-3&-14&7&18\\ -13&2&-5&-6\end{pmatrix}[/tex]

Step-by-step explanation:

Given : A matrix form,

[tex]A+\begin{pmatrix}3&9&-1&-8\\ \:16&-2&3&13\end{pmatrix}=\begin{pmatrix}0&-5&6&10\\ \:3&0&-2&7\end{pmatrix}[/tex]

we have to find the value of matrix A

Consider the given matrix form,

[tex]A+\begin{pmatrix}3&9&-1&-8\\ \:16&-2&3&13\end{pmatrix}=\begin{pmatrix}0&-5&6&10\\ \:3&0&-2&7\end{pmatrix}[/tex]

when A + B = C

Then A = C - B

That is

[tex]A=\begin{pmatrix}0&-5&6&10\\ \:3&0&-2&7\end{pmatrix}-\begin{pmatrix}3&9&-1&-8\\ \:16&-2&3&13\end{pmatrix}[/tex]

Subtract the elements in the matching position, we get,

[tex]A=\begin{pmatrix}0-3&\left(-5\right)-9&6-\left(-1\right)&10-\left(-8\right)\\ 3-16&0-\left(-2\right)&\left(-2\right)-3&7-13\end{pmatrix}[/tex]

Simplify, we get,

[tex]A=\begin{pmatrix}-3&-14&7&18\\ -13&2&-5&-6\end{pmatrix}[/tex]

Thus, The matrix A is [tex]\begin{pmatrix}-3&-14&7&18\\ -13&2&-5&-6\end{pmatrix}[/tex]

Answer: 15

Step-by-step explanation:

Using synthetic division:

-5  |  1    9     17    -8    50

    |  ↓   -5   -20   15   -35            

       1     4   -3      7     15  ← this is the remainder

Check:

f(x) = x⁴ + 9x³ + 17x² - 8x + 50

f(-5) = (-5)⁴ + 9(-5)³ + 17(-5)² - 8(-5) + 50

      = 625 - 1125 + 425 + 40 + 50

      = 15

Answer:

Points X and Y lie on more than one plane.

Step-by-step explanation:

From the  figure attached we have to find the points which lie on more than one plane.

M and R :

These are the points which lie on only one plane painted in yellow color.

A and S

These points lie on a plane perpendicular to the plane painted in yellow color.

X and Y :

These points lie on both the planes, painted in yellow color and the plane perpendicular to this.

M and S :

Point M lies on a plane in yellow color and point S lies on a plane perpendicular to the yellow plane.

Therefore, points X and Y lie on more than one plane.

Answer: No, we can't find a unique price for an apple and an orange.

Step-by-step explanation:

Since we have given that

Cost of 4 apples and 4 oranges = $10

Cost of 6 apples and 6 oranges = $12

We need to find the unique price for an apple and an orange.

According to question, our equations will be

[tex]4x+4y=\$10\\\\6x+6y=\$12[/tex]

since it is equation of parallel lines, as

[tex]\frac{a_1}{a_2}=\frac{b_1}{b_2}\neq \frac{c_1}{c_2}\\\\\frac{4}{4}=\frac{6}{6}\neq \frac{10}{12}[/tex]

Hence, No, we can't find a unique price for an apple and an orange.

Answer:

Total wood required for the project will be 9 3/8 feet.

Step-by-step explanation:

As given in the question Quentin has lumber of length = 6 5/8

feet =53/8 feet.

Now Quentin needs more lumber = 2 3/4 feet =11/4 feet or 22/8 feet.

So we can get total wood required by adding these two figures

That is = 53/8 + 22/8

           = (53 +22)/8

           = 75/8

            = 9 3/8 feet

Answer:

[tex]The\ total\ wood\ will\ the\ project\ have\ used\ be\ 9 \frac{3}{8}.[/tex]

Step-by-step explanation:

As given

[tex]Quentin\ has\ 6 \frac{5}{8}\ feet\ of\ lumber\ but\ needs\ another\ 2 \frac{3}{4}\ feet\ to\ complete\ the\ project\ he's\ working\ on.[/tex]

i.e

 [tex]Quentin\ has\ \frac{53}{8}\ feet\ of\ lumber\ but\ needs\ another\ \frac{11}{4}\ feet\ to\ complete\ the\ project\ he's\ working\ on.[/tex]        

 [tex]Total\ wood\ will\ the\ project\ have\ used =\frac{53}{8} + \frac{11}{4}[/tex]

L.C.M of (8,4) = 8

Than

[tex]Total\ wood\ will\ the\ project\ have\ used =\frac{53 + 11\times 2}{8}[/tex]                              

[tex]Total\ wood\ will\ the\ project\ have\ used =\frac{53 + 22}{8}[/tex]       [tex]Total\ wood\ will\ the\ project\ have\ used =\frac{75}{8}[/tex]  

[tex]Total\ wood\ will\ the\ project\ have\ used = 9 \frac{3}{8}[/tex]  

[tex]Therefore\ the\ total\ wood\ will\ the\ project\ have\ used\ be\ 9 \frac{3}{8}.[/tex]

1 ║ 1               2                  -3               2

                       1                   3               0

--------------------------------------------------------------------

       1              3                   0              [tex]\boxed{2}[/tex]

⇒ The Remainder is 2

The question is asking how many different outfit combinations William can form if he has 5 shirts and 7 pants. It's a simple multiplication of the two numbers (5*7) resulting in 35 different combinations. Therefore, William could wear a different outfit for 35 days without repeating.

The subject of this question is combinatorics, a branch of mathematics concerned with counting, both as a means and an end. In this specific context, we are looking at the number of different combinations that William can wear with the clothes he has. Since each shirt can be worn with any pair of pants, this translates into a simple product calculation.

William has 5 different shirts and 7 different pairs of pants. So, the total number of combinations of outfits he can put together is calculated by multiplying these numbers together. Hence, 5 shirts * 7 pants = 35 combinations.

This means that if William chooses a different combination each day, he could go for 35 days without wearing the same outfit twice.

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Answer:

105.35

Step-by-step explanation:

:)

Answer:

5 x 2 inside the parenthesis

Step-by-step explanation:

We need an order of operations to ensure we always arrive at the correct answer. It gives us a consistent way to work with numbers. We use the mnemonic device like PEMDAS to remember the correct order.

P-parenthesis

E-exponents

M-multiplication

D-division

A-add

S-subtract.

We apply them left to right doing inner operations before outer operations.

There fore our first step is in the parenthesis and multiplication because it is the inner most operations. 5 x 2 inside the parenthesis.

To find the equation of a line perpendicular to a given line, find the negative reciprocal of the slope and use the point-slope form of a line.

To find the equation of a line that is perpendicular to the given line and passes through the given point, we first need to determine the slope of the given line. The given line has a slope of -1/5, which is the negative reciprocal of the slope we want for the perpendicular line. The negative reciprocal of -1/5 is 5/1 or 5. Now we have the slope of the perpendicular line and a point it passes through (-2, 7), we can use the point-slope form of a line to find the equation: y - y1 = m(x - x1), where m is the slope and (x1, y1) is the given point.

Substituting the values, we get: y - 7 = 5(x - (-2))
y - 7 = 5(x + 2)
y - 7 = 5x + 10
y = 5x + 10 + 7
y = 5x + 17

Therefore, the equation of the line that is perpendicular to the given line and passes through the given point (-2, 7) is y = 5x + 17. Option B is the correct answer.

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The correct answer is B. y=5x+17.

To write the equation of a line that is perpendicular to the given line y-3=-1/5(x+2) and that passes through the point (-2, 7), first, we need to find the slope of the given line and then determine the slope of the perpendicular line, which will be the negative reciprocal of the given line's slope. The slope of the given line is -1/5, so the slope of the line perpendicular to it will be 5 (since the negative reciprocal of -1/5 is 5).

Next, we use the point-slope form of the equation of a line, which is y - y1 = m(x - x1), where m is the slope and (x1, y1) is the point through which the line passes. Plugging in our slope of 5 and the point (-2, 7), the equation becomes:

y - 7 = 5(x - (-2))

Expand and simplify to solve for y:

y - 7 = 5x + 10

y = 5x + 17

The correct answer is B. y=5x+17.