find the zeros f(x) = x 3 - 3x 2 – 5x +15

Answer:

x ≤ 10

Step-by-step explanation:

3/2 x - 1 ≤ x +4

3/2 x - x ≤ 1 + 4

(3-2)/2 x ≤ 5

1/2 x ≤ 5

2 * 1/2 x ≤  2 * 5

x ≤ 10

Answer:

a=-2400

Step-by-step explanation:

We have -x*y*z = 150. We want to find the value of -2x*2y*-4z. Let's set this to a variable, a. We have now that [tex]2x*2y*4z = a[/tex] (because the negatives combine to a positive), where we want to solve for a. This is equal to [tex]16xyz = a[/tex], and dividing by 16 on both sides results in [tex]xyz = a/16[/tex]. Recall that we know [tex]-xyz = 150.[/tex] Negating each side gives us [tex]xyz = -150.[/tex]

Now we have two equations that are equal to the same thing(xyz), so we can set them equal to each other. This gives us [tex]-150 = a/16[/tex]. To solve for a, we multiply both sides by 16, giving us a = -2400. This is our answer!

Hope this helps!

By using various properties of triangles, we get the value of [tex]\angle[/tex]ABD is 47.5°.

What are the properties of a triangle?

A triangle's sides and angles serve as the foundation for all of its characteristics. Triangular closed polygons with three sides and three vertices are what the word "triangle" means. The three internal angles of a triangle add up to 180°.

Let us first name a few angles that we will be using throughout the solution.

Let, [tex]\angle[/tex]DEN=a

[tex]\angle[/tex]ENC=c

[tex]\angle[/tex]MEB=b

[tex]\angle[/tex]EMB=d

Now, since it is given that AD ≅ AE, let us assume that triangle ADE is an isosceles triangle, with AD=AE.

Hence we get

[tex]\angle[/tex]DAE+[tex]\angle[/tex]ADE+[tex]\angle[/tex]AED=180° (angle sum property)

35°+2[tex]\angle[/tex]ADE=180°

[tex]\angle[/tex]ADE=[tex]\angle[/tex]AED=72.5°

Next, we know that

[tex]\angle[/tex]AED+a+[tex]\angle[/tex]NEC=180° (linear pair property of angles on a straight line)

72.5°+a+30°=180°

a=77.5°

Since a=b (opposite angles)
we get, a=b=77.5°

Now in triangle ENC, if we take the sum of angles, we get

[tex]\angle[/tex]NEC+[tex]\angle[/tex]NCE+c=180° (angle sum property)

30°+25°+c=180°

c=125°

We also know that the sum of interior angles made by an intersecting line between 2 parallel lines (given shape is a trapezoid) is 180, hence we get

c+d=180°

d=55°

In triangle MBN, we have

d+b+[tex]\angle[/tex]MBD=180° (angle sum property)

55°+77.5°+[tex]\angle[/tex]MBD=180°

[tex]\angle[/tex]MBD=47.5°

Therefore, we get the value of [tex]\angle[/tex]ABD=47.5°

To learn more about the properties of triangles, visit the following link:

https://brainly.com/question/8476788

#SPJ4

Answer:

[tex]y = \sqrt{34} \\\\x = \sqrt{106}[/tex]

Step-by-step explanation:

the total area of the two triangles as shwon in the image is 70 in²

Area can be defined as the total portion occuppied by a plane fiqure.

To calculate the total area of the two triangles, we use the formula below.

Formula:

Where:

Substitute these values into equation 1

Similarly,

Where:

Substitute these values into equation 2

Therefore, the total area of the two triangles is 40+30 = 70 in².

Learn more about area here: https://brainly.com/question/25092270

#SPJ1

Answer:

Cans of soup = 10

Frozen dinners = 5

Step-by-step explanation:

To determine the number of cans of soup and frozen dinners Caleb purchased, set up and solve a system of equations based on the given information.

Let x be the number of cans of soup Caleb purchased.

Let y be the number of frozen dinners Caleb purchased.

Each can of soup has 200 mg of sodium and each frozen dinner has 500 mg of sodium. The total amount of sodium in the purchased cans and frozen dinners is 4500 mg. Therefore:

[tex]200x + 500y = 4500[/tex]

Caleb purchased a total of 15 cans of soup and frozen dinners. Therefore:

[tex]x + y = 15[/tex]

To solve the system of equations, rearrange the second equation to isolate x:

[tex]\begin{aligned}x + y &= 15\\x + y -y&= 15-y\\x&=15-y\end{aligned}[/tex]

Substitute this into the first equation to eliminate the term in x, and solve for y:

[tex]\begin{aligned}200(15-y) + 500y &= 4500\\3000-200y + 500y &= 4500\\3000+300y &= 4500\\3000+300y-3000 &= 4500-3000\\300y&=1500\\300y \div 300&=1500 \div 300\\y&=5\end{aligned}[/tex]

Therefore, Caleb purchased 5 frozen dinners.

Substitute the found value of y into the rearranged second equation and solve for x:

[tex]\begin{aligned}x&=15-y\\x&=15-5\\x&=10\end{aligned}[/tex]

Therefore, Caleb purchased 10 cans of soup.

Answer:

Caleb purchased 10 cans of soup and 5 frozen dinners.

Step-by-step explanation:

Caleb purchased 10 cans of soup and 5 frozen dinners.

Let no. of can of soup be x and no. of frozen dinner be y.

To solve this, we can set up the following system of equations:

[tex]\tt x + y = 15[/tex]......[i]

[tex]\tt 200x + 500y = 4500[/tex]......[2]

Let's find the value by elimination method:

Multiplying equation one by 200.

we get,

[tex]\tt 200 x+ 200 y = 15*200[/tex]

[tex]\tt 200x +200 y =3000[/tex]

Subtracting equation 2 with equation 1.

[tex]\tt (200x+500y)-(200x +200 y) =4500-3000[/tex]

[tex]\tt \tt 300y = 1500[/tex]

[tex]\tt y =\dfrac{1500}{300}[/tex]

[tex]\tt y = 5[/tex]

Substitute the value of y into the first equation to find x.**

[tex]\tt x + 5 = 15[/tex]

[tex]\tt x = 15 - 5[/tex]

[tex]\tt x = 10[/tex]

Therefore, Caleb purchased 10 cans of soup and 5 frozen dinners.

(a) The population of the state was 18.5 million in 2000. (b)The population of the state will reach 26.6 million in the year 2002

A population is a distinct collection of people, whether that group consists of a nation or a population that shares a specific trait.  A population is the group of people from which a statistical sample is taken in statistics. As a result, a population can be defined as any group of people who have something in common.

Since t = 0 ,

Then A = 18.5

(b) The population of the state will reach 26.6 million in the year 2002

2002, by using the formula is 18.5e^0.173*t

Given,

A= 26.6

Then,    

[tex]A = 18.5 x e^{(0.1708t)} 26.6[/tex]

  [tex]= 18.5 x e^{(0.1708t)} \frac{26.6}{18.5}[/tex]

  = [tex]e^{(0.1708t)} 1.437838[/tex]

   = [tex]e^{(0.1708t)} \ln (\frac{1.437838}{0.1708})[/tex]

t = 2.126116

t =2

Therefore, 2 is the round down to the nearest years. So 2002 is the approximate year the population reached 26.6 million.

To know more about the population questions visit here: https://brainly.com/question/13945651

#SPJ1

The solution to the system substitution is (x , y) = (-3,3).

Here it is given that,

y=-2 x -3 and y= 3 x + 12

Take y=-2 x -3 as equation 1,

y= 3 x + 12  as equation 2'

by equating both equations,

-2x-3=3x+12

-3-12=3x+2x

5x=-15

x=-15/5

 =-3

substituting the value of x in the equation1

y=-2x-3

y=-2(-3)-3

 =3

Hence, The solution to the system substitution is (x , y) = (-3,3).

To learn more about substitution refer to:

https://brainly.com/question/22340165

#SPJ1

Step-by-step explanation:

your teacher could have explained this better by telling us that A(t) is the remaining amount of the original isotope.

(a)

we start with 200 g and let it do its thing for 25 years.

all we need to do is enter the number of years into the function formula (as this is a college question you are able to work with functions, right ?) and calculate :

A(25) = 200e^(-0.054 × 25) = 200e^-1.35 =

= 51.84805213... g ≈ 51.85 g

after 25 years, about 51.85 g of the sample will be left.

assuming you have a calculator (at least on your computer) that was really "difficult", don't you think ?

(b)

half of the original amount is 200/2 = 100 g.

so, we need to find the value for t so that A(t) = 100.

100 = 200e^(-0.054 × t)

100/200 = 1/2 = 0.5 = e^(-0.054 × t)

ln(0.5) = -0.054 × t

t = ln(0.5) / -0.054 = 12.8360589... years

I assume you need to round to the nearest hundredth here as well :

after about 12.84 years the sample will decay to half of the original amount.

The answer to this Question based on Linear Relation is given below

What is Linear Relation?

It is a relation between two variables in which one variable has linear behaviour as other

means if one variable increases or decreases then other variables does same behaviour linearly

Solution:

let us denote the battery by b and time by t

b = 54 - t/2

this relation satisfies all the conditions that are given in Question and gives variation of battery with time and this if plotted on graph will give a linear straight line

To learn more about Linear relation click the link:

https://brainly.com/question/19586594

#SPJ1

Answer:

b) 2/9

c) 1/3

Step-by-step explanation:

The probability of a desired event happening is the number of ways the desired event can happen divided by the total number of possible outcomes.

a) Correct

b)

There are 9 possible outcomes.

2 outcomes are negative.

p(negative) = 2/9

c)

There are 3 outcomes that are more then 3.

p(more than 3) = 3/9 = 1/3

The value of the expression upon evaluation by using the distributive property as required is; 28.

It follows from the task content that the distributive property is to be used to determine the value of the expression given.

Since the given expression is; 8 • 3 ½.

It follows that the expression can be written as follows;

8 ( 3 + ½ )

Hence, by the distributive property, it follows that we have;

( 8 × 3 ) + ( 8 × ½ )

= 24 + 4

= 28.

On this note, the value of the expression is; 28.

Read more on distributive property;

https://brainly.com/question/4077386

#SPJ1

Using the fact that the angles are supplementary, we can write and solve a linear equation to find that x = 5°.

Remember that two angles are supplementary if the addition of their measures is equal to 180°.

Here we know that angles J and K are supplementary, then we know that:

J + K = 180°

Here we also know that:

J = 120°

K = 12x

So we can write a linear equation of the form:

120° + 12x = 180°

12x = 180° - 120°

12x = 60°

x = 60°/12 = 5°

x = 5°

We conclude that the value of x is 5°.

Learn more about supplementary angles by reading:

https://brainly.com/question/2046046

#SPJ1

The quadratic is the left-most piece.  This exists on the interval (-infty, -2).

The linear piece is the center piece and exists on the interval (-2,6).

The square root piece is the right-most piece and exists on (6, infty).

These intervals are describing how each piece lines up with the x-axis, as illustrated in the picture.

The required description of the given piecewise function are as follows:

quadratic → (-∞, -2); linear → (-2, 6) and square root → (6, ∞).

A piecewise-defined function (also known as a piecewise function or a hybrid function) is a function defined by multiple sub-functions, each of which applies to a different interval of the main function's domain (a sub-domain).

The graph is given in the question, as shown

1. quadratic function:

This the sub-function define between the interval (-∞, -2).

2. linear function:

This the sub-function define between the interval (-2, 6).

3. square root function:

This the sub-function define between the interval (6, ∞).

Learn more about the piecewise function here:

https://brainly.com/question/12700952

#SPJ5

Answer: Come up with questions that make sence. That are good solvablequestions. Make sure that you are able to take data off of it to see how people result in it.

Step-by-step explanation:

Answer:

g(3) is 24

Step-by-step explanation:

To find the value of g(3), we need to plug 3 into the function g(x) and evaluate the resulting expression. The function g(x) is defined as g(x) = 3(2)^x. When we plug 3 into this function, we get g(3) = 3(2)^3. To evaluate this expression, we need to calculate 2^3, which is 8. Therefore, g(3) = 3 * 8 = 24.

In summary, the value of g(3) is 24.

Answer:

g(3) = 24

Step-by-step explanation:

Given information,

→ g(x) = 3(2)^x

Then the value of g(3) will be,

→ g(x) = 3(2)^x

→ g(3) = 3(2)³

→ g(3) = 3(8)

→ [ g(3) = 24 ]

Hence, the value of g(3) is 24.

Answer:

49

hope this helps!!

The solution to the inequality 6x > 72 is option B x > 12

What is an inequality?

An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way. The majority of the time, size comparisons between two numbers on the number line are made. Different types of inequalities are represented by a variety of notations, including:

The symbol a < b indicates that a is smaller than b.

When a > b is used, it indicates that a is bigger than b.

A is not equivalent to b in any scenario. Since a is strictly less than or strictly greater than b, these relationships are known as stringent inequalities. Equivalence is not considered.

There are two forms of inequality relations that are not strict, in contrast to strict inequalities:

The notation a ≤ b or a ⩽ b means that a is less than or equal to b (or, equivalently, at most b, or not greater than b).

The notation a ≥ b or a ⩾ b means that a is greater than or equal to b (or, equivalently, at least b, or not less than b).

Given, the inequality is 6x>72

6x > 72

Dividing by 6 on both sides of inequality, we get,

6x/6 > 72/6

⇒ x > 12

Hence, option B is correct.

The solution to the inequality 6x > 72 is option B, x > 12

To know more about inequality visit:

brainly.com/question/28823603

#SPJ1

Answer:12

Step-by-step explanation:

The function [tex]y = (\frac{1}{2})^x[/tex] is a decreasing function.

The function [tex]y = (\frac{1}{2})^x[/tex] is shallower from left to right.

The value of the function [tex]y = (\frac{1}{2})^x[/tex] is unity at the y-intercept.

A function can be defined as the outputs for a given set of inputs.

The inputs of a function are known as the independent variable and the outputs of a function are known as the dependent variable.

The given function is [tex]y = (\frac{1}{2})^x[/tex] which is an exponential function cause the exponent is the variable.

Now, At x = - 2 y = 4 ⇒ (- 2, 4),

x = - 1, y = 2 ⇒ (- 1, 2).

x = 0, y = 1 ⇒ (0, 1).

x = 1, y = 1/2 ⇒ (1, 1/2).

x = 2, y = 1/4 ⇒ (2, 1/4).

x = 3, y = 1/8 ⇒ (3, 1/8).

The function is a decreasing function as the value of x increases the value of the function is decreasing.

The function is shallower from left to right.

The value of the function is unity at y-intercept as anything raised to the zero power is 1.

learn more about functions here :

https://brainly.com/question/12431044

#SPJ1

A) The lead executives statement has been justified below considering the fall and rise of the graph line.

B) Between the years 7 and 8.

A) Looking at the attached graph, we can trace that the printed ad's revenue peaked at $3 million and then began to fall steadily. The online ad revenue started  with nothing and thereafter gradually increased in value to millions of dollars. Now, since the printed ad revenue has been declining and online ad revenue is seen to be increasing, it means that the lead executive's assertion is accurate.

B) Both curves are seen to intersect between the seventh and eighth year, I would say around the middle of year 7, and both online ads and printed ads generated an approximate revenue of $2.2 million each

Between the years 7 and 8.

Read more about Linear Graphs at; https://brainly.com/question/4025726

#SPJ1

a. The table for the given data is as follows :

Year                  2014       2015        2016       2017

Value (in $) 254000 293000 338000 372000

b. Domain and Range for the given relation is:

Domain : {2014, 2015, 2016, 2017}

Range : {254000, 293000, 338000, 372000}

c. From the table we observe that for each year it is having a unique value so it is related to the function.

What is Domain?

The domain of a function is the set of values that we are allowed to plug into our function. This set is the x values in a function such as f(x).

What is Range?

The range of a function is the set of values that the function assumes.

What is Relation?

A collection of ordered pairs having one item from each set makes up a relation between two sets. If the ordered pair (x,y) is present in the relation and the items x and y come from different sets, then the objects are said to be connected

a. The table for the given data is as follows :

Year                  2014       2015        2016       2017

Value (in $) 254000 293000 338000 372000

b. Domain and Range for the given relation is:

Domain : {2014, 2015, 2016, 2017}

Range : {254000, 293000, 338000, 372000}

c. From the table we observe that for each year it is having a unique value so it is related to the function.

To know more about Domain and Range checkout :

https://brainly.com/question/2264373

#SPJ1

Answer:

1

Step-by-step explanation:

First, simplify the parentheses.

2 - 3 = -1

Then, put this simplified value into the original expression.

(2 - 3)^(-1)

= (-1)^(-1)

Finally, execute the exponent function.

(-1)^(-1) = 1/1 = 1

The term that makes NO distinction between an explanatory variable X and a response variable Y is Correlation , the correct option is (a) .

In the question ,

four options are given ,

we have to select the option that makes no distinction between explanatory variable X and a response variable Y .

Response Variable is the (dependent variable) measures the outcome of the study.

Explanatory Variable is the (independent variable) helps to explain or influence changes in a response variable.

So , Correlation makes no distinction between explanatory and response variables.

So , it makes no difference in calculating the correlation , which variable you call x and which you call y  .

Therefore , the correct option is (a) .

The given question is incomplete , the complete question is

Which of the following makes NO distinction between an explanatory variable X and a response variable Y (i.e., you can interchange the roles of X and Y and get the same result) ?

(a) Correlation

(b) Regression

(c) Both correlation and regression make no distinction between X and Y.

(d) Both correlation and regression make distinction between X and Y.

Learn more about Correlation here

https://brainly.com/question/20340896

#SPJ4

Answer:

I'll help

Step-by-step explanation:

the entrance fee to the skating rink=$5

each minute the skater uses the rink costs=$0.25

Answer:

exponential

Step-by-step explanation:

the 14% of a number will be always greater because the numbers themselves will be greater

The system of linear inequalities is graphed is  x < -2; y ≤ -x+2. Hence option c is the correct.

What is inequality?

In mathematics, inequalities specify the connection between two non-equal numbers. Equal does not imply inequality. Typically, we use the "not equal sign" to indicate that two values are not equal. But several inequalities are utilized to compare the numbers, whether it is less than or higher than.

The graph consists of two inequalities.

Since the one graph line is solid, thus the inequality sign either "less than or equal" or "greater than or equal". The other one is dotted, thus it will be less than or greater than

First find the equation of line.

One line passes through the points (-2,0) and (0,-2).

The equation of line that passes through the point (a,0) and (0,b) is

x/a + y/b = 1

The equation of the line is x/(-2) + y/(-2) =1

x + y = -2

y = -x - 2

The equation of the inequality will be either y ≤ -x - 2 or y ≥  -x - 2.

Putting x =0  and y = 0 in y ≤ -x - 2

0  ≤ - 0 -2

0≤ -2 (false)

In the graph (0,0) does not include in the shaded region. Therefore the inequality is   y ≤ -x - 2.

The second line is parallel to y-axis.

The equation of line will be x = a

The line passes through the point (-2,0)

Putting x = -2 and y =0  in x = a

-2 = a

Therefore the equation of the dotted line will be x = -2

The equation of the inequality will be either x > -2 and  x < -2:

Putting x =0  and y = 0 in x < -2

0 < -2

0 < -2 (false)

In the graph (0,0) does not include in the shaded region. Therefore the inequality is  x < -2.

To learn more about system of linear inequalities, click on below link:

brainly.com/question/13685981

#SPJ1

The inequality that shows how long the temperature in Austin will remain colder than that in San Antonio is 33.5 + 2.5t < 37.5 + 1.5t and the time is less than 4 hours

From the question, we have the following parameters that can be used in our computation:

Austin

Initial temperature = 33.5 degrees Fahrenheit

Rate of increment = 2.5 degrees Fahrenheit

San Antonio

Initial temperature = 37.5 degrees Fahrenheit

Rate of increment = 1.5 degrees Fahrenheit

The above parameters mean that

Current temperature = Initial temperature + Rate of increment x Number of hours

So, we have

Austin: A(t) = 33.5 + 2.5t

San Antonio: B(t) = 37.5 + 1.5t

When Austin is colder than San Antonio, we have

A(t) < B(t)

Substitute the known values in the above equation, so, we have the following representation

33.5 + 2.5t < 37.5 + 1.5t

Evaluate the like terms

t < 4

Divide both sides by 1

t < 4

Hence, the interval is less than 4 hours

Read more about inequality at

https://brainly.com/question/25275758

#SPJ1