the number of country A forces country B decreased to approximately 34,000 in 2014 from a high of about 10,000 in 2008. the amount of country A funding for country B security forces also decreased during this period. the function \(f(x)= -1.384x^{2} +5.253x+5.517\( can be used to estimate the amount for country A funding for country B security forces. in billions of dollars, x years after January 2007. in what year was the amount for country A funding for country B security forces about $10.5 billion?

Answers

Answer 1

The number of country A forces in country B decreased to approximately 34,000 in 2014 from a high of about 10,000 in 2008. X represents the number of years after January 2007, this means that the amount of funding was approximately $10.5 billion in the year 2.135 years after January 2007, or approximately September 2009.

What year was the amount for country A funding for country B security forces about $10.5 billion?

Generally, To find the year in which the amount of funding was approximately $10.5 billion, we need to solve the equation:

f(x) = 10.5

Substituting the given function for f(x), we get:

-1.384x^{2} + 5.253x + 5.517 = 10.5

We can solve this quadratic equation by using the quadratic formula:

\(x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\)

where a = -1.384, b = 5.253, and c = 5.517.

Substituting these values into the formula, we get:

\(x = \frac{5.253 \pm \sqrt{5.253^2 - 4(-1.384)(5.517)}}{2(-1.384)}\)

Simplifying this expression gives us:

\(x = \frac{5.253 \pm \sqrt{27.747029}}{-2.768}\)

Since x represents the number of years after January 2007, we are only interested in the positive solution. Therefore, we can ignore the negative solution.

\(x = \frac{5.253 + \sqrt{27.747029}}{-2.768}\)

Simplifying this expression further gives us:

x = 2.135

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Related Questions

what is the greatest common facter of 48 and 84​

Answers

Answer:12

Step-by-step explanation:

The prime factorization of 84 is 2×2×3×7 . The prime factorization of 48 is 2×2×2×2×3 . . Therefore, the GCF is 2×2×3=12

Samuel will arrive at the airport on the first plane after 10 am Airplanes arrive every 50 mins beginning at 6 am when will samuels plane arrive?

Answers

Samuels plane arrive will arrive at 10:10 am, in the given algebraic problem.

What is algebraic expression?

An algebraic expression is a mathematical expression that uses coefficients, unknown variables, algebraic operations, and constants. However, it is not acceptable to use an equality symbol in an expression.

Mathematical expressions and sentences come in a wide variety. the relationships between equations, numerical expressions, and algebraic expressions.

The difference between 10 am and 6 am

is 4 hours, So the the time he arrives will be a multiple of 50 grater than 4 hours

50x > 4 × 60

50x > 240

x > 240/50

x > 4.8

x = 5 (as 5 is nearest single digit no. to 4.8)

50x = 50 × 5

= 250 minutes

250 mins = 4 hours and 10 mins

6 am  + 4 hours and 10 mins

= 10 hour and 10 min or 10:10 am

Thus, Samuels plane arrive will arrive at 10:10 am, in the given algebraic problem.

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8h 39min
+ 3h 25min
------------------
h min

Answers

Answer:

12h4min

Step-by-step explanation:

39 + 25=64

1h=60mins

so 64/60=1 and the remain is 4.

4 is minute and 1 is hour

8 + 3 + 1=12hours

so The Answer is 12hours 4minutes

Twice a certain number is subtracted from 9 times the number. The result is 21. Find the number.​

Answers

Answer:

3

Step-by-step explanation:

Let x represent the number.

Create an equation to represent the situation, and solve for x:

9x - 2x = 21

7x = 21

x = 3

So, the number is 3.

Find the volume of the solid.

Find the volume of the solid.

Answers

Answer:

64cm³

Step-by-step explanation:

( 4 x 4 x 4) cm x cm x cm

PLEASE ANSWERING THIS QUESTION!!!

The volume of a cone with height h and a radius r can be found using the formula \(\sf{V=\dfrac{1}{3}\pi r^2h\)


Find the volume of a cone with radius 5 feet and height 4 feet.


(Blank) ft^3


Rules answering these questions:


Explain your answer!


Do not spam answers!


Show your work!


Nonsense answers will be reported and delete your answers.


Thanks!

Answers

Answer:

104.8cm³(1 decimal place)

Step-by-step explanation:

Volume of a cone is given by the formula

V=1/3πr²h

we are given a radius of 5 and a height of 4 so we will just substitute for the values and we will give our pie as 22/7

V=1/3× 22/7×5²×4

V=1/3 × 22/7 ×25 ×4

V=2200/21

V=104.76190476

V=104.8cm³(1decimal place)

pls if you like this answer you can appreciate it by marking it as brainliest

math please help me ​

math please help me

Answers

Answer:

1, 3

Step-by-step explanation:

1. 2.3 - 2.3 = 0

2. -3.7 + -4.1 = -7.8

3. -2.6 - (-12/4) = 0.4 = 4/10 = 2/5

4. 5/2 + (-2.5) = 0

5. 72- (-100)

   72+100 = 172

WILL GIVE BRAINLIEST FOR THE CORRECT ANSWER!!

What scale factor was applied to the first rectangle to get the resulting image?

Enter your answer as a decimal in the box.

WILL GIVE BRAINLIEST FOR THE CORRECT ANSWER!!What scale factor was applied to the first rectangle to

Answers

Answer:

2.5

Step-by-step explanation:

the length has increased by 7.5/3 = 2.5.

so the scale factor is 2.5

HELP ASAP PLEASE!!

Does this image show an enlargement or a reduction?


An equilateral triangle with a side length of 3.4. An arrow points to a smaller equilateral triangle with a side length of 1.7


Enter your answer in the first Blank.


What scale factor was used?

HELP ASAP PLEASE!!Does this image show an enlargement or a reduction?An equilateral triangle with a side

Answers

Answer:

the image shows reduction

Step-by-step explanation:

1.7

Answer:

0.5

Step-by-step explanation:

First divide 1.7 to 3.4 and then you get your answer

Hope this helps :)

The sum of two consecutive even integers is at most 400. The pair of integers with the greatest sum is 196 and 198. True or Flase

Answers

Answer:

False

Step-by-step explanation:

The greatest sum of two consecutive even integers would be 200 + 198, or 398

Answer:

its true

Step-by-step explanation:

let f(x) =x^2+3x-8 and g(x) =-2x+6 find (f+g) (x) and (f-g) (x) ​

Answers

Functions of these are algebraic expression (f+g)(x) = x² + x-2 and             (f-g)(x) = x² + 5x - 14.  

What is functions?

In mathematics, a functiοn is a rule οr mapping that assοciates each element x in a set (called the dοmain) with a unique element f(x) in anοther set (called the range οr cοdοmain).Fοr example  functiοn f(x) = x² + 3x - 8.

An algebraic expressiοn is a cοntains οf variables, cοnstants, and mathematical οperatiοns such as additiοn, subtractiοn, multiplicatiοn, divisiοn, and expοnentiatiοn. It cantains  parentheses and οther grοuping symbοls tο indicate the οrder in which the οperatiοns shοuld be perfοrmed.

In the given question ,

To find (f+g)(x),

we simply add the two functions f(x) and g(x) term by term:

(f+g)(x) = f(x) + g(x)

= (x² + 3x - 8) + (-2x + 6)

= x²  + (3x - 2x) + (-8 + 6)

= x² + x - 2  

Therefore, (f+g)(x) = x² + x - 2.

To find (f-g)(x), we subtract g(x) from f(x) term by term:

(f-g)(x) = f(x) - g(x)

= (x²  + 3x - 8) - (-2x + 6)

= x²  + (3x + 2x) + (-8 - 6)

= x²  + 5x - 14  

Therefore, (f-g)(x) = x²  + 5x - 14.

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Tori is writing an essay for her English class. She already has 235 words, andon average writes 175 words every hour. The essay needs to be at least 1,600words. How many more hours should she plan to work on it? Write and solvean inequality for the situation.

Answers

Let be "h" the number of hours Tori should plan to work on it.

You know that she writes an average of 175 per hour. This can be represented with this expresion:

\(175h\)

You also know that there must be at least 1,600 words in the essay for her English class. Since she has 235 words written, you can set up the following inequality:

\(235+175h\ge1,600\)

The symbol used in the inequality means "Greater than or equal to".

In order to solve it, you can follow these steps:

1. Subtract 235 from both sides of the inequality:

\(\begin{gathered} 235+175h-(235)\ge1,600-(235) \\ 175h\ge1,365 \end{gathered}\)

2. Divide both sides of the inequality by 175:

\(\begin{gathered} \frac{175h}{175}\ge\frac{1,365}{175} \\ \\ h\ge7.8 \end{gathered}\)

The answer is:

\(7.8\text{ }hours\)

Let f be a differentiable function, defined for all realnumbers x, with the following properties. Find f(x). Show yourwork.
i) f'(x)=ax2+bx
ii) f'(1)=6 and f"(1)=18
iii. =18

Answers

The differentiable function f with the given properties is \(f(x)=4x^3-3x^2+10\).

What is a differentiable function:

A function with a differentiable value of one real variable is one whose domain contains a derivative. In other words, each interior point in the domain of a differentiable function's graph has a non-vertical tangent line.

The given properties for the differentiable function f are:

\((i) f'(x)=ax^2+bx\\ (ii) f'(1)=6, f''(1)=18\\ (iii) \int\limits^2_1 {f(x)} \, dx =18\)

From (i) we can get \(f''(x)=2ax+b\)

By substituting (ii) in (i) we will get:

a+b=6 and 2a+b=18. By solving these two equations we will get the following:

a=12, b=-6.

We will integrate (i) on both sides, we will get:

\(f(x)=\frac{ax^3}{3} +\frac{bx^2}{2} +c\) where c is the integration constant.

In this equation, we will substitute a,b.

\(f(x)=\frac{12x^3}{3} +\frac{-6x^2}{2} +c\\ \\ f(x)= 4x^3-3x^2+c\)...................(iv)

Now we will substitute (iv) in (iii), and we will get:

\(\int\limits^2_1 {( 4x^3-3x^2+c)} \, dx =18\\ \\ (2^4-2^3+2c)-(1^4-1^3+c)=18\\ \\c=10\)

Therefore \(f(x)=4x^3-3x^2+10\).

Complete question:

Let f be a differentiable function, defined for all real numbers x, with the following properties. Find f(x). Show your work.

\((i) f'(x)=ax^2+bx\\ (ii) f'(1)=6, f''(1)=18\\ (iii) \int\limits^2_1 {f(x)} \, dx =18\)

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Can someone help me

Can someone help me

Answers

The scale factor that was used to convert triangle ABC into the image in A ' B ' C ' is 1 / 2.

How to find the scale factor ?

To find the scale factor, you need to find the length of a side of triangle ABC and then the length of the corresponding side in A ' B ' C '.

The side length we will pick is AB which is:

= 6 - 2

= 4 units

The side length of the other triangle is A' B' :

= 3 - 1

= 2 units

The scale factor is:

= 2 / 4

= 1 / 2

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is their a simplified way of understanding the proof limit?

Answers

Yes, there are several ways to understand the concept of a limit in calculus without going into the details of a formal proof. One way to understand the concept of a limit is to think of it as a way to measure how close a function gets to a particular value as the input to the function gets closer and closer to a certain number. For example, if we have a function f(x) and we want to find the limit of the function as x approaches 2, we can think of this as asking "how close does f(x) get to a certain number as x gets closer and closer to 2?"

Another way to understand the concept of a limit is to think of it as a way to describe the behavior of a function as the input gets very large or very small. For example, if we have a function f(x) and we want to find the limit of the function as x approaches infinity, we can think of this as asking "how does f(x) behave as x gets very large?"

Overall, the concept of a limit is a fundamental concept in calculus that allows us to describe and analyze the behavior of functions as the input to the function changes. While a formal proof of the limit can be quite complex, there are several intuitive ways to understand the concept without going into the details of the proof.

Find the missing side or angle.
Round to the nearest tenth.
A=78°
b=2
C=4
a=[ ? )

Find the missing side or angle.Round to the nearest tenth.A=78b=2C=4a=[ ? )

Answers

Answer:

\(a=4.1\)

Step-by-step explanation:

The Law of Cosines is given as:

\(a^2=c^2+b^2-2cb\cos A\).

Plugging in given values, we get:

\(a^2=4^2+2^2-2\cdot 4 \cdot 2\cos 78^{\circ},\\a^2=16+4-16\cos 78^{\circ},\\a^2\approx \sqrt{16.673},\\a\approx \fbox{$4.1$}\).

Answer:

The answer for Acellus people is a=4.1

Step-by-step explanation:

10 - 4v = -2 - 4(-3 + v)

Answers

Answer:

All real numbers are solutions.

Step-by-step explanation:

Let's solve your equation step-by-step.

10−4v=−2−4(−3+v)

Step 1: Simplify both sides of the equation.

10−4v=−2−4(−3+v)

10+−4v=−2+(−4)(−3)+(−4)(v)(Distribute)

10+−4v=−2+12+−4v

−4v+10=(−4v)+(−2+12)(Combine Like Terms)

−4v+10=−4v+10

−4v+10=−4v+10

Step 2: Add 4v to both sides.

−4v+10+4v=−4v+10+4v

10=10

Step 3: Subtract 10 from both sides.

10−10=10−10

0=0

here are these pictures to help
10 - 4v = -2 - 4(-3 + v)

Algebra Help Please!
Given f(x) = -3x + 5, find f(-6).

Answers

the answer is 23





you plug -6 into x on the other side of the problem then do the math, two negatives make a positive

Find the center and radius of the circle with the equation: (x-5)^2+(y+1)^2=4

Answers

Answer:

Centre (5,-1) radius =2

Step-by-step explanation:

(x-5)^2+(y+1)^2=4

The standard equation of the circle is

(X-a)^2+(y-b)^2=r^2

Where a,b is centre of the circle and r is the radius of the circle

Compare the equations

So we get a=5,b=-1 and r=2

Centre (5,-1) radius =2

Can someone solve it plz!!!

Can someone solve it plz!!!

Answers

9514 1404 393

Answer:

  y = 0.2·0.5^x

Step-by-step explanation:

An exponential function is generally of the form ...

  y = a·b^x

where 'a' is the function value when x=0, and b is the ratio between values for x=1 and x=0.

In the given table, y = 0.2 for x = 0, so a = 0.2.

We find that the value for x = 1 is 0.1, so the value of b is ...

  b = 0.1/0.2 = 0.5

Then the exponential function is ...

  y = 0.2·0.5^x

Use: 0, 4, 6, 11, 9, 8, 9, 1, 5, 9, 7 to construct a box-and-whisker plot. List the maximum, minimum, and quartiles below. has to be a sentence

Answers

A box-and-whisker plot which represent the given data set is shown in the image attached below.

The five-number summary for the given data set have been listed correctly below.

What is a box-and-whisker plot?

In Mathematics, a box-and-whisker plot is sometimes referred to as a box plot and it can be defined as a type of chart that is used for the graphical or visual representation of the five-number summary of a data set with respect to locality, skewness, and spread.

By using an online box-and-whisker plot calculator, the five-number summary for the given data set include the following:

Minimum = 0.First quartile = 4.Median = 7.Third quartile = 9.Maximum = 11.

By critically observing the box-and-whisker plots (see attachment), we can logically deduce that all of the five-number summary for the given data set are correctly listed.

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Use: 0, 4, 6, 11, 9, 8, 9, 1, 5, 9, 7 to construct a box-and-whisker plot. List the maximum, minimum,

find the lenght of ab

find the lenght of ab

Answers

Answer:

20.6 cm (im pretty sure lol)

Step-by-step explanation:

sine rule:

(ab = x)

13.5/sin41 = x/sin90

13.5sin90/sin41 = x

x = 20.57741667

ab = 20.6cm

Please help me don't understand

Please help me don't understand

Answers

Answer:

x=13

Step-by-step explanation:

50+3x=89

89-50=3x

39=3x

13=x

in a class of 100 students,50 student pass in mathematics and 70 pass in English 5 student failed in both mathematics and English how many student pass in both the subject ​

Answers

Answer:

Both Mathematics and English : 25

Step-by-step explanation:

Total students: 100

math pass students: 50

English pass students: 70

both failed: 5

Now,

subject student : Total students-failed

: 100-5

: 95

Passed in both Subject: Math+English- S. S

: 50+70-95

: 25

: The students pass in both subject : 25

Graph the exponential function.=gx2xPlot five points on the graph of the function. Then click on the graph-a-function button.

Graph the exponential function.=gx2xPlot five points on the graph of the function. Then click on the

Answers

Okay, here we have this:

Considering the provided function, we are going to plot five points on the graph and use them to graph the function with the help of a graphing calculator, then we get the following:

To calculate the 5 points we will evaluate the function at x=0, 1, 2, 3 and 4, then we have:

x=0:

\(\begin{gathered} g(x)=2^x \\ g(0)=2^0 \\ g(0)=1 \end{gathered}\)

x=1:

\(\begin{gathered} g(x)=2^x \\ g(1)=2^1 \\ g(1)=2 \end{gathered}\)

x=2:

\(\begin{gathered} g(x)=2^x \\ g(2)=2^2 \\ g(2)=4 \end{gathered}\)

x=3:

\(\begin{gathered} g(x)=2^x \\ g(3)=2^3 \\ g(3)=8 \end{gathered}\)

x=4:

\(\begin{gathered} g(x)=2^x \\ g(4)=2^4 \\ g(4)=16 \end{gathered}\)

Finally then we will graph these points and use them to graph the function, and the graph looks like this:

Graph the exponential function.=gx2xPlot five points on the graph of the function. Then click on the

Tom took a trip of 1,020 miles. He traveled by train at 55 miles an hour and the same number of hours by plane at 285 mph. How many hours did the trip take?

Answers

Answer:

3 hours

Step-by-step explanation:

285+55+285+55+285+55=1020

or another way

285+55×3= 1020

Question 10 of 10
Check all that apply. If tane = 15/8,then:
A. csco =17/15
B. sece =17/8
C. cose =15/17
D. cote =8/15

Question 10 of 10Check all that apply. If tane = 15/8,then:A. csco =17/15B. sece =17/8C. cose =15/17D.

Answers

If tan Ф = 15/8 then we have these trigonometric functions cosec Ф = 17/15, sec Ф = 17/8 and cot Ф = 8/15.

According to the question,

We have the following information:

Tan Ф = 15/8

We know that in this trigonometric function we have perpendicular divided by base.

Now, we can find the hypotenuse using the Pythagoras theorem:

Let's denote hypotenuse with h, perpendicular with p and base with b.

\(h^{2} =p^{2} +b^{2}\)

\(h^{2}\) = \((15)^{2} +(8)^{2}\)

\(h^{2} = 225+64\\h^{2} = 289\\h = \sqrt{289}\)

h = 17 units

Now, we have the following values:

Cosec Ф = 17/15 (Hypotenuse/perpendicular)

Sec Ф = 17/8 (h/b)

Cos Ф = 8/17 (b/h)

Cot Ф = 8/15 (b/p)

Hence, the correct options are A, B and D.

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a student was trying to solve the problem below. look at their work and find the error.
identify which line the error is in, describe the error, state what the correct answer should be.
line 1: 2√45 - 3√5
line 2: 2√9 * √5 - 3√5
line 3: 2 * 9 * √5 - 3√5
line 4: 18√5 - 3√5
line 5: 15√5​

Answers

Answer:

line 4

Step-by-step explanation:

i just know.

3 1/3x(-3 3/5) divided by (-1/3)

Answers

Answer:

31/3

Step-by-step explanation:

31/3*(-33/5) divided by (-1/3)

10/3*(-15/5) *(-1/3)

2/3*(-5)*(-1)

= 10/3

Find the slope from the table.

Find the slope from the table.

Answers

Answer:

m=0

Step-by-step explanation:

the slope is calculated using two points on the line and the formula

m = (y2 - y1) ÷ (x2 - x1)

where

x1 and y1 are the coordinates of point 1

x2 and y2 are the coordinates of point 2

for example, you can take

point 1 = (x1;y1) = (-2;3)

point 2 = (x2;y2) = (-1;3)

then your slope is

m = (3 - 3) ÷ (-1 - (-2)) = 0

notice that x1 is always at the left of x2 on the x axis

and it makes sense that your slope is 0 because for each x your y is the same

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