One model for the number of students enrolled in U.S. Public high schools as a function of time since 1986 is N = -0.033t2 +0.46t + 13.37. Here N is the enrollment in millions of students, t is the time in years since 1986, and the model is relevant since 2000. Explain

Answer:

x = 3.6

Step-by-step:

3 times a number is increased by twenty two = 3x+22

Result ( = ) fourten less than seven times the number =  7x - 14

Since they are equal to each other, you have:

3x + 22 = 7x - 14

Solve:

22 = 10x - 14

36 = 10x

x = 3.6

Answer:

No

Step-by-step explanation:

Given that:

Amount earned when a student does comminty service = $5

Number of students in club = 12

Amount earned E, is a function of number of members (n) who does community service.

Hence,

E = n * amount earned per member

Is 24 a possible output?

To test, then E = 24

24 = n * 5

24 = 5n

24/5 = 5n/5

4.8 = 5

Hence, 24 is not a possible output, be use number of membwra cannot be a decimal

Answer:

y=1.08x-2144.24

Step-by-step explanation:

find the slope: m=(19.00-13.60)/(2003-1998)=1.08

so we have y=1.08x +b

next, use the point (2003, 19.00) to find b:

19.00=1.08*2003 +b =>b=-2144.24

Answer:

The present age of Dave is 40 years

Step-by-step explanation:

Let the present age of Johns be x

We are given that Dave is six years less then twice Johns  age.

Dave's present age = 2x-6

We are also given that The sum of John and Dave's ages is 63.

So, [tex]x+2x-6=63[/tex]

[tex]3x-6=63[/tex]

[tex]3x=63+6[/tex]

[tex]3x=69[/tex]

[tex]x=\frac{69}{3}[/tex]

[tex]x=23[/tex]

Dave's present age = 2x-6=2(23)-6=40

Hence The present age of Dave is 40 years

Answer:

In it's simplest form possible.

Answer:

Slope: 5/3, y-intercept (0,-3)

Step-by-step explanation:

Answer:

The answer is x < 3

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the greater than a sign from both sides of the line      

St2*x-(6)<

ep by step solution :

STEP

1

Pulling out like terms

1.1     Pull out like factors :

 2x - 6  =   2 • (x - 3)  

Equation at the end of step

1

STEP

2

2.1    Divide both sides by  2  

Solve Basic Inequality :

2.2      Add  3  to both sides

            x < 3

Answer:

x < 3

Step-by-step explanation:

2x < 6

Divide both sides 2.

∴ x < 3

To trisect a 60-degree angle you first construct an equilateral triangle.

Option C is the correct answer.

The angles between two lines are the angles formed by two intersecting lines, measured in degrees or radians.

Several different types of angles can be formed between two lines, including acute angles, right angles, and obtuse angles.

We have,

To trisect a 60-degree angle, we can use the fact that an equilateral triangle has three 60-degree angles.

The steps to trisect a 60-degree angle using an equilateral triangle are as follows:

Draw an equilateral triangle with one of its vertices at the angle to be trisected.

Draw a line from the vertex of the angle to the opposite side of the triangle, dividing the angle into two 30-degree angles.

Draw a line from the vertex of the angle to the point where the opposite side intersects the circle centered at the vertex with a radius equal to the length of one side of the equilateral triangle. This will divide one of the 30-degree angles into two 15-degree angles.

Draw a line parallel to the opposite side of the triangle from the point where the 15-degree angle is divided to the adjacent side of the triangle. This will trisect the 60-degree angle into three 20-degree angles.

Thus,

By constructing an equilateral triangle, we can trisect a 60-degree angle.

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Answer:

16

Step-by-step explanation:

3 x 4 = 12

4 x 4 = 16

Answer:

15

Step-by-step explanation:

Find the y-intercept and x-intercept

1) Find the x-intercept, substitute y = 0

0 = -x-5

5=-x

x= -5

Therefore, the x-intercept is at -5

2) Find the y-intercept, substitute x = 0

y= -0 - 5

y = 0 - 5

y = -5

Therefore, the y-intercept is at -5 too.

Plot the line graph from x = -5 to y = -5 and it should be like this.

Note - You can easily find the y-intercept just looking at "b value" from y = mx+b when m is the slope and b is the y-intercept.

Answer:

Step-by-step explanation:

1) since -5 is graphed in the equation we know the y-intercept is -5

2) since we already know the point (0,-5) form the y-intercept, we pick x-values and plug them into the equation. I'll use -4, 3, and 9

y=-x-5      y=-x-5     y=-x-5

y=-9-5      y=-3-5    y=--4-5

y=-14        y=-8        y=-1

3) we then plot the 4 points we found and draw a straight line connecting them, and then we put arrows on either side of the line because the question did not say that it was a line segment.

4) And check your work by going to Google and typing "student desmos graphing calculator" and typing in your equation.

Answer:

o

0 F x>o v 0 cover the interval (-4,-3

The statement which is true about the graphed function is that F(x) > 0 over the interval (-∞, -4).

A function is a relation from a set A to a set B where the elements in set A only maps to one and only one image in set B. No elements in set A has more than one image in set B.

Given is a graph of a function.

The options contains the open interval (-∞, -3) and (-∞, -4).

It is clear that along this interval, the graph is situated above the X axis.

This means that the values of y is all greater than 0.

At x = -4, F(x) = 0

For all x < -4, F(x) > 0

So the correct statement is F(x) > 0 over the interval (-∞, -4).

Hence F(x) > 0 over the interval (-∞, -4).

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Answer:

11.

[tex]1 \times \frac{3}{8} [/tex]

12.

[tex]2 \times \frac{5}{6} [/tex]

Answer:

The answer is "a ‘V’ shaped graph with vertex at (3, 8), which opens up "

Step-by-step explanation:

First replace "x" with varying numbers such as -5 and -4 to +4 and +5.

Go through solving the equation.

And finally, graph your different points.

Answer:

a ‘V’ shaped graph with vertex at (3, 8), which opens up

Step-by-step explanation:

Answer:

1. if its (5+2^3)/4-2 then its 6.5

2. if its just 5+2^3/4-2 then its 5

Step-by-step explanation:

1. (5+2^3)/4-2

   (5+8)/4-2

   (13)/4-2

    (13)/2

    6.5

2. 5+2^3/4-2

   5+8/4-2

  5+2-2

 7-2

 5

Answer:

By a small online search, i found that the actual question seems to be:

"Stephanie uses a ride service to get to different places in her city. If Stephanie uses Uber the service charges $5.00 plus 1.50 per mile . If Stephanie uses lift the service charges $2.00 per mile. Let m represent the number of miles traveled. Which of the following statements are true . Select all that apply"

The statements are not provided, so i will answer it in a general way.

We have two different equations:

1) a fixed amount of $5.00 plus $1.50 for each mile, m.

This is a linear equation:

y1 = $1.50*m + $5.00

2) No fixed amount, only $2.00 for each mile, m.

y2 = $2.00*m

Now, the things we can see are which service will be cheaper as a function of m.

To see this, we can see the difference between y1 and y2.

When the difference is negative, this means that y1 is cheaper.

When the difference is positive this means that y2 is cheaper.

When the difference is zero, both services charge the same.

D = y1 - y2 = $1.50*m + $5.00 - $2.00*m

                 = (-$0.50)*m + $5.00

First let's find when it is zero.

              0 =  (-$0.50)*m + $5.00

            5.00/0.5 = m = 10

So for 10 miles, both services charge the same.

As the coefficient that multipies m is negative, if we have m > 10, then the difference will be negative.

This means that for m > 10, y1 is cheaper.

Then for m < 10, y2 is cheaper.

Answer:

3x+2x=95

5x=95

X=19

Step-by-step explanation:

it may help you to understand

Answer:

o resultado é 961

foi mal se erei

Answer:

0.208333.....

or

Step-by-step explanation:

5 / 4

if you look at 7/8 + 2/3

remove the ( you do not need them

now look at 7/8 -2/3

add fractions together

it becomes 5/4

results should be 5/4

there's your answer I hope it works please give me brainiest

Answer:

w = 38

Step-by-step explanation:

add 13 to 25 to get 38 so w = 38

Answer:

6

Step-by-step explanation:

12 x 2 = 24

24 : 4 = 6

Answer:

a:

Felipe: y = 80x + 510

Melissa: y = 60x + 590

b:

80x + 510 = 60x + 590

(simplifies to x = 4)

Answer:

8.25÷53790 is 0.00015337423 and the other one is 0.00015337423

1. The solution of the expression '' 8.25 divided by 53790 '' will be 0.00015337423.

2. The solution of the expression '' 825 divided by 5379000 '' will be 0.00015337423.

What is Division method?

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications.

For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

The mathematical expression are;

1. 8.25 divided by 53790

2. 825 divided by 5379000

Now,

After divide we get;

1. 8.25 divided by 53790 = 8.25 ÷ 53790

8.25 ÷ 53790 = 8.35 / 53790

                     = 835 / 5379000

After divide we get;

= 0.00015337423

Thus, 8.25 ÷ 53790 = 0.00015337423

2. The expression is;

825 divided by 5379000 = 825 ÷ 5379000

                                        = 825 / 5379000

                                        = 0.00015337423

Thus, 825 ÷ 5379000 = 0.00015337423

So, Both the expression have same solution.

Therefore,

1. The solution of the expression '' 8.25 divided by 53790 '' will be 0.00015337423.

2. The solution of the expression '' 825 divided by 5379000 '' will be 0.00015337423.

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Answer:

4 2/11

Step-by-step explanation:

The absolute value is the distance between a number and zero. This means that absolute value cannot be negative because you cannot travel a negative distance. The distance between - 4 2/11 is 4 2/11.

Hope This Helps :)

The absolute value of -4(2/11) is 46/11.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

-4(2/11)

= -46/11

Now,

The absolute value.

= |-46/11|

= 46/11

Thus,

The value is 46/11.

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There is no requirement in the question. I'll calculate the area of the rectangle to help you with this question.

Answer:

[tex]A=15\ cm^2[/tex]

Step-by-step explanation:

System of Equations

Let's call y to the length of a rectangle, x to its width. There are two conditions that will help us to solve for x and y.

[tex]y=3x-4[/tex]

[tex]2x+2y=16[/tex]

Divide by 2:

[tex]x+y=8[/tex]

To solve the system, we'll substitute the y in the first equation into the second:

[tex]x+3x-4=8[/tex]

Joining like terms:

[tex]4x=8+4[/tex]

Solving:

[tex]x=12/4=3[/tex]

Find the value of y:

[tex]y=3x-4=3*3-4=9-4=5[/tex]

Thus, the length of the rectangle is 5 cm and its width is 3 cm. The area is calculated as:

[tex]A=xy=3\ cm\cdot 5\ cm=15\ cm^2[/tex]

[tex]\boxed{A=15\ cm^2}[/tex]

Answer:

false

Step-by-step explanation:-3 in the () means -3 x -3 which is positive 9, where as without () it's -3x3 which is -9. Positive 9 is bigger than -9.

Answer:

False

Step-by-step explanation:

-3^2 = -(3^2) = -(3 × 3) = -9

(-3)^2 = -3 × -3 = 9

-9 < 9

Answer:

D

Step-by-step explanation:

Given

17 ≤ - 3x + 2 ≤ 26 ( subtract 2 from each of the 3 intervals )

15 ≤ - 3x ≤ 24

Divide the 3 intervals by - 3, reversing the symbols as a result of dividing by a negative quantity.

- 5 ≥ x ≥ - 8 , that is

- 8 ≤ x ≤ - 5 → D

[tex]17 \leqslant - 3x + 2 \leqslant 26[/tex]

Subtract sides -2

[tex]17 - 2 \leqslant - 3x + 2 - 2 \leqslant 26 - 2 \\ [/tex]

[tex]15 \leqslant - 3x \leqslant 24[/tex]

Divided sides by -3

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

Point :

When the sides of a inequality multiply or divided by an negative number It changes direction and returns them.

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

Thus ;

[tex] \frac{15}{ - 3} \geqslant \frac{ - 3}{ - 3}x \geqslant \frac{24}{ - 3} \\ [/tex]

[tex] - 5 \geqslant x \geqslant - 8[/tex]

[tex] - 8 \leqslant x \leqslant - 5[/tex]

Thus the correct answer is (( D )) .

_________________________________

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Answer:

12x+40

Step-by-step explanation:

(3/5x+2)*20=

12x+40

Answer: bruh i have the exact same question

Step-by-step explanation:

Answer:

4

Step-by-step explanation: