-5x-20+8+16x simplify please show steps

Answer:

  19 or 26

Step-by-step explanation:

You want the value of 3n² -8n -9, given that n(n -3) = 10.

We recognize that 10 = 5·2 and that these factors differ by 3. This means n(n -3) = 10 is equivalent to saying n ∈ {-2, 5}.

The value of 3n² -8n -9 will be one of ...

  (3n -8)n -9 = (3(-2) -8)(-2) -9 = (-14)(-2) -9 = 19 . . . . for n = -2

or

  (3(5) -8)(5) -9 = (7)(5) -9 = 26 . . . . . . . for n = 5

The expression 3n² -8n -9 will be either 19 or 26.

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Answer:

the correct answer is 4th option line S

The division operation of 4385 by 7 has the quotient and remainder given as follows:

The division operation in the context of this problem is defined as follows:

4385 by 7.

We start dividing 43 by 7, which has a quotient of 6 and a remainder of 43 - 6 x 7 = 1, hence the first digit of the quotient is of 6.

Then we concatenate the remainder of 1 with the remaining digits 85, hence 185 divided by 7.

18/7 has a quotient of 2 and a remainder of 18 - 7 x 2 = 4, hence the second digit of the quotient is of 2.

Then we concatenate the remainder of 4 with the remaining digit 5, hence 45 divided by 7.

45/7 has a quotient of 6 and a remainder of 45 - 7 x 6 = 3, hence the third digit of the quotient is of 6.

Hence the quotient is:

626, with a remainder of 3.

The problem asks the quotient and the remainder when 4385 is divided by 7.

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I recommend use of simple random sampling to determine the three possible toppings to be used for the vegetarian pizza.

It is a sampling technique in which each member of the population has an equal chance of being selected for the sample. Here, the population would be students who regularly eat at the school cafeteria.

By using the sampling, we make sure that each student has an equal chance of being selected to taste test the different pizza toppings. This will help to eliminate bias and provide a representative sample of the population's preferences. They will provide feedback which will be used to determine which topping should be used for the vegetarian pizza.

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Answer:

65 boletos.

Step-by-step explanation:

Sabemos que el precio para un niño es 6 dólares, y el precio para un adulto es 9,20 dólares. Además, el cine se vendió 146 boletos, y recibió 1135,20 dólares.

Vamos a resolver este problema con un sistema, usando 2 varibles.
No sabemos cuantos boletos de niño el cine vendió, entonces el cine vendió <<x>> boletos de niños. Tampoco sabemos cuantos boletos de adultos vendió, entonces vendió <<y>> boletos de adultos.

En total, vendió 146 boletos; el número de los boletos de niños con el número de los boletos de adultos es 146 boletos.

Usando las variables, x + y = 146 boletos.

Esta es una de las equaciones que necesitamos.

Porque todos los boletos de niños es 6 dólares, si el cine vendió <<x>> boletos, su total de ventas (de boletos de niños) es <<6x>> dólares.

Lo mismo es verdad para los boletos de adultos; todos los boletos de adultos es 9,20 dólares, entonces si vendió <<y>> boletos, el total de ventas de boletos de adultos es <<9,20y>> dólares.

En total, las ventas de los boletos de niños + las ventas de los boletos de adultos es 1135,20 dólares.

O, con variables, es 6x + 9,20y = 1135,20

Nuestra sistema es:

x + y = 146

6x + 9,20y = 1135,20

Ahora necesitamos resolver esta sistema.

Podemos usar la sustitución. Vamos a resolver una de las eqaciones para una variable, y después, usar el valor de esa variable para encontrar la solución para una de las variables, y después, usar  esa solución para encontrar la solución de la otra variable.

Podemos mover <<y>> al otro lado.

x + y = 146 => x = 146 - y

Ahora, podemos sustituir <<x>> para 146 - y en 6x + 9,20y = 1135,20

6(146-y) + 9,20y = 1135,20

Multiplica.

876 - 6y + 9,20y = 1135,20

Combina los términos que son los mismos.

876 + 3,20y = 1135,20

Mueva 876 al otro lado.

876 + 3,20y = 1135,20 => 3,20y = 259,20

Divide todo por  3,20.

3,20y/ 3,20 = 259,20/ 3,20

y = 81

Entonces, el cine vendió 81 boletos de adultos.

Recuerda, esta (81 boletos de adultos) no es lo que necesitamos. Necesitamos cuantos boletos de niños vendió.

Entonces, podemos substituir <<y>> con 81 en x = 146 - y. Recuerda que <<x>> es cuantos boletos de niños vendió.

x = 146 - y => x = 146 - 81 => 65

Entonces, el cine vendió 65 boletos de niños.

Answer:

2/10

Step-by-step explanation:

-5+7=2, since the denominator stays the same.

2/10, simplified is 1/5

Answer:

2/10 or 1/5

Step-by-step explanation:

Because -5/10 and 7/10 both have 10 as the denominator we don't have to do anything about that, so you just add and simplify.

If you need me to go through it in depth let me know, but I hope that helps!

Have a great day!

Answer:

The slope is 3 or 3/1.

Step-by-step explanation:

The amount of money will always be counted as a y value. So, you can do 345 - 255, which is 90, over 120 - 90, which is 30. You will have 90/30, that will simplify to 3 or 3/1. Therefore, your slope is 3.

Answer:

The slope is 3

Step-by-step explanation:

Hope this helps

Answer:

x < 2

Step-by-step explanation:

|-7x+4| < 18
7x + 4 < 18
7x + 4 - 4 < 18 - 4
7x < 14
7x/7 < 14/7
x < 2

im not sure if this is right but this is what i got.

Answer:

A contingency table

Step-by-step explanation:

Hypothesis tests carried out on contingency tables are based on the chi-square, a statistic.

The contingency table is a Frequency tables of two variables presented at the same time. These tables are constructed when we represent all the levels of a variable as rows in a table and represent the other variables as columns, after which we find the joint or cell frequency for every of the cell.

Answer:

Area = 100x^2 + 80x + 16

Step-by-step explanation:

Since a square's sides all should be congruent, divide (40x+16) by 4 since a square has 4 sides.

Each side would be 10x+4 after the division.

Area is lengthxwidth so it would be (10x+4) x (10x+4)

Area is 100x^2 +40x+40x+16 = 100x^2 + 80x + 16

A function that represents the height of Elmer's carriage is,

h(x) = 52cosx + 77.

The adjacent side to hypotenuse ratio is known as the cos function. It aids in determining the triangle's side lengths regardless of the provided angle. If the angle between the adjacent side and the hypotenuse of a right triangle is, we may write this using the cosine function. Adjacent Side/Hypotenuse = Cos.

Given:
Elmer is on a Ferris wheel which has a diameter of 104 ft and whose center is 129 ft off the ground.

That means the radius of the Ferris wheel is r = 104/2 = 52 feet.

The wheel is 129 - 52 = 77 feet off the ground.

Elmer's carriage makes an angle of x radians in a horizontal way.

So, the height of Elmer's carriage is,

= rcosx + a

Here, r = 52 and a = 77

So, we get,

h(x) = 52cosx + 77.

Therefore, the function is h(x) = 52cosx + 77.

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Answer: 0.679 liters

Step-by-step explanation:

A centiliter is a measure of volume equal to one hundredth of a liter

Hence,

53,1*0.01=

0.531 liters

A deciliter is a measure of volume equal to one tenth of a liter

Hence,

7.9*0.1=

0.79 liters

0.531+0.79=

1.321 liters

2-1.321=

0.679 liters

the answer is:

Trueeeee

Answer:

False

Step-by-step explanation:

IF the lines are parallel, they will NEVER intersect at any point at any time. I hope this helps :)

Just add the powers while it is multiply

-1+(-3)

= -1 - 3

= -4

So it is \(2^{-4}\)

Answer:

10,-4

Step-by-step explanation:

not sure where the options are but if you were to solve this equation first bring everything to one side.

x^2 - 6x - 40 = 0

factor it

(x-10)(x+4) = 0

set each part to 0

x-10 = 0 and x+4 = 0

solutions are 10 and -4

The value of x for the two lengths of the diagonals is 1.

A diagonal in geometry is a line segment that connects two polygonal or polyhedral vertices when they are not on the same edge. Any sloping line is known as a diagonal informally.

Geometry is the area of mathematics that deals with the characteristics of space and the shapes of particular things as well as the interactions between them in space.

Given that the two segment values are 2x + 4 and 7x - 1. The value of x will be calculated as,

2x+4 = 7x-1

5x = 5

x = 1

Hence, the value of x is 1.

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Answer:

Answer: 8

Step-by-step explanation:

Brainly Pls Thx :D

The parameters of the exponential function in this problem are given as follows:

The standard format of an exponential function is given as follows:

y = c(1 - a)^t.

This is the case for a decaying exponential function, and the meaning of each parameter is given as follows:

In this problem, the function is given as follows:

f(x) = 1.1(0.44)^x.

Hence the values for the parameters are given as follows:

Then the percent of change is of -56%, as it is a decaying exponential function with a = 0.56.

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Answer:

period = 12π

Step-by-step explanation:

the period illustrates how shifting the graph by one period to the left or right results in the same function.

starting from (0, 3 )

one complete cycle to the right from here is (12π, 3 )

then period = 12π - 0 = 12π

Step-by-step explanation:

the period of a function or graph is simply the x-distance from one "top of the hill" to the next "top of the hill", or from one "bottom of the valley" to the next "bottom of the valley".

if the function has that same distance across the whole x-axis (or whatever part is valid), we are calling this a periodic function.

in our case here :

from -9pi to 3pi = 12pi

from 3pi to 15pi = 12pi

from 15pi to 27pi = 12pi

...

so, yes, it is periodic, and the period is 12pi.

The solution of the quadratic equation -2x² + 4x = 5 is; x = 1 ± (1/2)√-6

We are given the quadratic equation;

-2x² + 4x = 5

-2x² + 4x - 5 = 0

Quadratic formula for an equation of the form ax² + bx + c = 0 is given as; x = [-b ± √(b² - 4ac)]/(2a)

From the given quadratic equation, we can see that;

a = -2

b = 4

c = -5

Thus;

x = [-4 ± √(4² - 4*-2*-5)]/(2*-2)

x = [-4 ± √(16 - 40)]/-4

x = -4/-4 ± (1/4)√-24

x = 1 ± (2/4)√-6

x = 1 ± (1/2)√-6

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Answer:

Two independent sample t test

Step-by-step explanation:

The research described describes the statistics of two different samples which are also independent,

Sample 1 :

Sample size, n1 = 16

Mean, xbar = 4.75

Standard deviation s2 = 2.8

Sample 1 :

Sample size, n1 = 15

Mean, xbar = 3.93

Standard deviation s2 = 2.4

The hypothesis :

H0 : μ1 = μ2

H1 : μ1 ≠ μ2

The t statistic :

(xbar1 - xbar 2) ÷ sqrt[(s1²/n1 + s2²/n2)

From on the test statistic, obtain the p value and compare with Given α - value to make and conclude in a decision.

Answer: 59.66

Step-by-step explanation:

Answer:

Step-by-step explanation:

required area=π(10²-9²)=π(100-81)=19π

≈19×3.14

≈59.66

≈59.7 square units.

Answer:

25%

Step-by-step explanation:

I hope this helps!!

Answer:

i think first is 20% and second is 10%

Step-by-step explanation:

Answers:

=======================================================

Explanation:

This leads to the equation W = 33T + 500

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

Plug in T = 14

W = 33T + 500

W = 33*14 + 500

W = 462 + 500

W = 962 liters of water are in the pond after 14 minutes

The distance between -10 and 5 on a number line is 15

From the question, we are to determine the distance between the given points on a number line

The given points are -10 and 5

On a number line, the distance between any two points is the difference between the largest number and the smallest number

That is,

Distance between two points on a number line = Value of the largest number - Value of the smallest number

The given points are -10 and 5

The largest number is 5

and

The smallest number is -10

Thus,

Distance between -10 and 5 on a number line = 5 - -10

Distance between -10 and 5 on a number line = 5 + 10

Distance between -10 and 5 on a number line = 15

Hence, the distance between -10 and 5 on a number line is 15

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The answer and all work is shown in the provided screenshot! :)

Have a great day!

The slope intercept equation for the linear equation is

y = ( -2/3 )x + 3

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

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

Given data ,

The values of x are given in the set A : { 0 , 3 , 6 , 9 , 12 }

The values of y are given in the set B : { 3 , 1 , -1 , -3 , -5 }

Now , when the value of x is 0 , the value of y will be 3

The linear equation which satisfy the given condition is

y = ( -2/3 )x + 3

And , substituting the values of x and y in the above equation , we get

When x = 0

y = ( -2/3 ) x 0 + 3

y = 3

So , the equation is true

When x = 3

y = ( -2/3 ) x 3 + 3

y = -2 + 3

y = 1

So , the equation is true

When x = 6

y = ( -2/3 ) x 6 + 3

y = -2 x 2 + 3

y = -4 + 3

y = -1

So , the equation is true

When x = 9

y = ( -2/3 ) x 9 + 3

y = -2 x 3 + 3

y = -3

So , the equation is true

When x = 12

y = ( -2/3 ) x 12 + 3

y = -2 x 4 + 3

y = -8 + 3

y = -5

So , the equation is true

Hence , the slope intercept equation for the linear equation is

y = ( -2/3 )x + 3

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Answer:

Hope this helps ;) don't forget to rate this answer !

Step-by-step explanation:

To solve this problem, we need to perform the indicated operations in order. The first step is to simplify the expressions inside the parentheses.

(3x7 + 7x5 - 3x² + 7) + (x7 - 3x5 + 2x³ + 3)

= (21x + 35x - 3x² + 7) + (7x - 15x + 2x³ + 3)

The next step is to combine like terms within each parentheses:

= (21x + 35x - 3x² + 7) + (7x - 15x + 2x³ + 3)

= (56x - 3x² + 7) + (-8x + 2x³ + 3)

Finally, we can add the two expressions:

= (56x - 3x² + 7) + (-8x + 2x³ + 3)

= 56x - 3x² - 8x + 2x³ + 3 + 7

= 56x - 3x² - 8x + 2x³ + 10

The final answer is 56x - 3x² - 8x + 2x³ + 10.