three more than eight times a number is equal to 19. find the number.

everything u need id in the picture

The first step of substitution method for given system is put x = 3y +3 in place of x into the equation 2x+3y=-12 .

The system of the equations in two variables x and y consists of two equation of the form a₁ x + b₁ y = c₁

and a₂ x + b₂ y = c₂

where a₁, a₂, b₁, b₂ , c₁, c₂ are constants

For substitution method, first expression of one variable is found from one equation and then put this expression in another equation to create a linear equation in second variable. Solve the linear equation in one variable for second variable and then put the value of second variable in first equation to solve for first variable

Given system of equations is :

2x + 3y = -12       .....(1)

x = 3y + 3          .....(2)

So the first step will be take expression for one variable from one equation and put it into another equation.

Take x = 3y +3 which is an expression for x from equation (2),

Then put it into equation (1)

⇒ 2 (3y +3 ) + 3 y = -12 , This is the first step of substitution method for this variable

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The trigonometric functions tangent, sine and cosine are related by the following equation:

In this case, the angle is y°, so:

Since we want the cosine, we can solve for it ans substitute the given tangent and sine:

This corresponds to the third alternative.

The inequlaity is ;

And the solution is;

Let the number be x

The number divided by 3

That is x/3

less two means minus 2

x/3 - 2

Is at most 2 means it is less than or equal to 2

so the inequality is;

The midpoint formula   [tex]\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2}[/tex] and the length of coordinates can be determined from the formula [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex].

What are coordinates?

Coordinates are a pair of integers (Cartesian coordinates), or sporadically a letter and a number, that identify a certain place on a grid, also referred to as a coordinate plane.

The x-axis & y-axis are the two axes that make up a coordinate plane (vertical).

The coordinates of the origin, which is the location where the two axes connect, are (0, 0).

The following formula is used to determine the separation between two coordinates :

The midpoint formula   [tex]\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2}[/tex] and the length of coordinates can be determined from the formula [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex].

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The place value of 6 in 205.876 is 6 thousandth

What is the solution to the given equation?

x= 20

How is the equation in the bar diagram solved?

3.5x + 12.5x =320

16x = 320

x = 20

What is a bar diagram?

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Explanation

to plot this, you need to count the numbers of weigth for that number, for example

for 18

count in the table all the 18

you will get 18 is 2 times in the table (2)

now, for 19

count the number of 19's in the table 3

and so on

Step 1

then, for 24

total = 0

so, as we have not 24 as a data, there is not need to plot it

I hope this helps you

two thousand people attend the theater during the week of a movie's release (option A)

The equation:

y = -50x + 2000

y = number of people in the theater

x = number of weeks since the movie release

2000 will be the number of people in the theater at the begining of the movie release

y-intercept of an equation represent the value of y when x is zero

The 2000 is the number of people in the theater at week zero.

Hence, y-intercept indicate two thousand people attend the theater during the week of a movie's release (option A)

Main Answer: The probability that a randomly selected passenger has a waiting time greater than 3.25 minutes is 0.59375.

Explaination:

Calculation of the probability:

Since The waiting times between a subway departure schedule and the arrival of a passenger are uniformly distributed between 0 and 8 minutes.

So, here the probability is

= 0.59375

Hence, The probability that a randomly selected passenger has a waiting time greater than 3.25 minutes is 0.59375

a. Since GC bisects FGH and the angle FGH = 122°, we know that the angle FGC = 122/2 = 61°

b. Since GC bisects FGH and the angle CGH = 42°, we know that the angle FGH = 2*42 = 84°

Answer: B

Step-by-step explanation:

[tex]\tan \theta=10 \implies \sin \theta=\frac{10}{\sqrt{101}}, \cos \theta=\frac{1}{\sqrt{101}}[/tex]

[tex]\sin 2\theta=2\sin \theta \cos \theta=2 \left(\frac{10}{\sqrt{101}} \right)\left(\frac{1}{\sqrt{101}} \right)=\frac{20}{101}[/tex]

[tex]\cos 2\theta=2\cos^2 \theta-1=2 \left(\frac{1}{\sqrt{101}} \right)^2 -1=-\frac{99}{101}[/tex]

[tex]\therefore \sin 2\theta+\cos 2\theta=\frac{20}[101}-\frac{99}{101}=-\frac{79}{101}[/tex]

Multiply the full number by the denominator to convert a mixed number to an improper fraction. If the value be 3 11 / 16 then simplifying the value 59 / 16.

Multiply the full number by the denominator to convert a mixed number to an improper fraction. Include it in the numerator. Add that total to the denominator from the beginning.

To make a mixed number from an improper fraction, divide the numerator by the denominator. After division, the mixed number is produced in such a way that the obtained quotient becomes the entire number, the remainder becomes the new numerator, and the denominator remains constant.

Let the value be 3 11 / 16

Convert mixed numbers to improper fraction: [tex]$a \frac{b}{c}=\frac{a \cdot c+b}{c}$[/tex]

[tex]$&3 \frac{11}{16}=\frac{3 \cdot 16+11}{16}=\frac{59}{16} \\[/tex]

= 59 / 16

Therefore, the correct answer is 59 / 16.

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We will solve as follows:

First: We will use the i, j, k vector notation to describe each point as a vector:

Now, we have that the time it takes to get from A to B is 3 hours (t1). And the time it takes from B to C is 1 hour (t2).

Second: We determine the speed from A to B:

Third: We now determine the value of C:

So, we would have that the coordinates of C are:

The product of two expressions can be calculated using distributive property as,

(Distributive property (A+B)C=AC+BC) )

Therefore, the product of the expressions is,

From the graph

the curve start from a point close to 40

Hence at the beginning of the year January, the teperature was 38 degree

Answer:

g(x) = x + 7

Step-by-step explanation:

f(x) = x^9

g(x) = x + 7

f(g(x)) = (x + 7)^9

Answer:

Given the data set of height (inches) for 12 students, calculate the mean: 60, 64, 66, 68, 70, 71, 72, 73, 78, 71, 65, 69

Answer:

Let flour, sugar, raisins be 3x, 1.5x, x grams respectively.

Total Mass = 550g 3x+1.5x + x = 550g

5.5x = 550 x = 100g

Flour = 3x= 3 x 100 = 300g

Hence, flour in mixture is 300g

Recall that the symbols ≤ and ≥ in interval notation are represented by ] and [ respectively.

Also, the symbols < and > in interval notation are represented by ) and ( respectively.

Therefore:

a)

in interval notation is:

b)

Answer:

a)

b)

The probability of a student living off campus is 0.35.

It should be noted that probability simply means the likelihood that something will occur.

Remember the multiplication rule for conditional probability: P(B AND A)=P(B/A)P(A)

Rearranging, we find that P(A)=P(B AND A)P(B/A)

So if we think of A= the event a student lives off campus and B = event a student eats at the cafeteria, then we can plug in the known information to find:

P(A)=0.07 / 0.20

= 0.35

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Answers:

Q1.a: 11g

Q1.b: 3m

Q1.3: [tex]-k^{2}[/tex]

Q2.a:  8x + 11y

Q2.b: 2a + b - 2c

Q3.a: 5q + 7

Q3.b: 6r + 3s + 7t

Step-by-step explanation:

Q1) simplify each of these expressions:

a. [tex]4g + 6g + g[/tex]

= g(4 + 6 + 1)

= 11g

____________

b. [tex]4m - m[/tex]

= m(4 - 1)

= 3m

____________

c. [tex]5k^{2} -4k^{2} -2k^{2}[/tex]

= [tex]k^{2} (5 - 4 - 2)\\[/tex]

= [tex]-1k^{2}[/tex]

= [tex]-k^{2}[/tex]

__________________________________

Q2) copy and complete the workings to simplify these expressions:

a. [tex]5x + 3x+6y+5y\\[/tex]

= x(5 + 3) + y(6 + 5)

= 8x + 11y

____________

b.[tex]2a+4b+6c-3b-8c[/tex]

combine terms b:

2a + b + 6c - 8c

combine terms c:

= 2a + b - 2c

__________________________________

Q3) simplify these expressions by collecting like terms:

a.[tex]9q-4q+15-8[/tex]

combine terms q:

5q + 15 - 8

combine numbers:

= 5q + 7

____________

b. [tex]8r+2s+4t-2r+s+3t[/tex]

combine terms r:

6r + 2s + 4t + s + 3t

combine terms s:

6r + 3s + 4t + 3t

combine terms t:

= 6r + 3s + 7t

The value of 1936 divided by 8 in long division is 242.

Long Division is a method for dividing large numbers that divides the task into numerous phases that follow a sequence. Just like in conventional division problems, the dividend is divided by the divisor, yielding the quotient and, in some cases, a remainder.

The steps are:

Step 1: Take the first digit of the dividend from the left.

Step 2: Then divide it by the divisor and write the answer on top as the quotient.

Step 3: Subtract the result from the digit and write the difference below.

Step 4: Bring down the next digit of the dividend

Using the above step the division is 242.

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The given function of the height of the diver is

h is the height in feet

t is the time in seconds

To find the time for the whole motion equate h by 0, as when the diver inter the water his jumper height will be zero. (The surface of the water is the initial position)

Switch the 2 sides and change all signs to opposite

Now, we have a quadratic equation, then we will use the calculator to find the values of t

Since time can NOT be a negative value, then we will ignore the 2nd value of t

The answer should be about 15.44 seconds to the nearest 2 decimal place

For a initial amount invested P at a annual interest rate r, the total amount after n years is given by:

For P = $83927, r = 0.07 and n = 7, we have:

Then, the amount of interest Tiana will earn on this investment is given by:

the amount paid for gatuities which 5 percent of the cost of banquet is  

A percentage refers to a specific number or part in every hundred. It is a fraction with the denominator 100, and the symbol for it is "%.". The cost of gratuities is 1/20 or 5 percent of the amount paid for banquet. let us assume that x is the amount paid for banquet so

2457 is 120 percent of x

or 2457= [tex]\frac{120}{100}[/tex]×x

which implies x=2457×[tex]\frac{100}{120}[/tex]

     x=2047.5$

this is the amount of banquet. to get the cost of gratuities we subtract this amount from the total cost.

amount paid for gratuities is 2457-2047.5=409.5$

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The amount of the remaining balance of the car loan is $26293.1103.

Given,

The initial loan amount, P = 27000

The rate of interest, r = 6.2%

Time period, t = 5 years

Interest is compounded monthly.

The 20th payment of the loan = $524.50

We have to find the  remaining balance of the car loan.

Here,

Amount, A = P[1 + r/n]^nt

Where,

A is the total amount = principal amount + compound interest

P is the principal amount

r is the rate of interest

n is the number of times compounded

t is the time period

So,

A = P[1 + r/n]^nt

A = 27000 × [1 + 6.2/100/12]^12 × 5

A = 27000 × [12.062/12]^60

A = 27000 × [1.005166]^60

A = 27000 × 1.362

A = 36783.1103

The total amount should be paid after 60 months is $36783.1103

Now,

The 20th payment = $524.50

That is,

524.20 × 20 = 10490

$10490 is paid and the balance amount;

36783.1103 - 10490 = 26293.1103

Therefore,

The amount of the remaining balance of the car loan is $26293.1103.

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Point of B is ( -10 , 0) is midpoint of AB .

What is midpoint of a segment?

The midpoint of AB =  ( – 5, 4) = ( x ,y)

A = (0, – 9) ⇒ ( x₁ , y₁)

Let B = ( x₂, y₂ )

midpoint of AB ⇒ x =  x₁ + x₂/2 ,  y = y₁ + y₂/2

                              -5 = 0 + x₂/2  , -9 = -9 + y₂/2

                              x₂ = -10  , y₂ = 0

point of B is ( -10 , 0)

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hope you understand from the image...

:-)

to do a perfect-square trinomial the third term must be the square of the half of the second term

the sencond term is 7,so

so the expresion is

and the factor

An example

the third term is

so the percet-square is