Help me with a ASAP plz and explain

Help Me With A ASAP Plz And Explain

Answers

Answer 1

(f+g)(x)=f(x)+g(x)=(2x-6)+(4x+7)=6x+1

(f-g)(x)=f(x)-g(x)=(2x-6)-(4x+7)=-2x-13

(fg)(x)=f(x)×g(x)=(2x-6)(4x+7)=8x^2-10x-42

(f+g)(-2)=f(-2)+g(-2)=(2(-2)-6)+(4(-2)+7)=-11


Related Questions

If you borrow $450.00 at a 5% interest, how much will you pay in one month?

Answers

Answer: Between about 31 and 33 dollars per month

Step-by-step explanation:

How many hours are there in 360 mins​

Answers

Answer: 6 hours

Step-by-step explanation:

You have to divide 360 by 60 minutes.

Answer:

There are 360 minutes in 6 hours.

Hope this helps :)

(HELP MEH) Why is √​5​​ irrational?
A.) because it is less than one
B.) because it has no opposite
C.) because all square roots are irrational
D.) because it cannot be expressed as a ratio of integers

Answers

Answer:

  D.)  because it cannot be expressed as a ratio of integers

Step-by-step explanation:

The root of any integer that is not a perfect square is irrational. 5 is not a perfect square, so is irrational—it cannot be expressed as the ratio of integers.

__

Proof

Suppose √5 = p/q, where p and q are mutually prime. Then p² = 5q².

If p is even, then q² must be even. We know that √2 is irrational, so the only way for q² to be even is for q to be even—contradicting our requirement on p and q.

If p is odd, then both p² and q² will be odd. We can say p = 2n+1, and q = 2m+1, so we have ...

  p² = 5q²

  (2n+1)² = 5(2m+1)²

  4n² +4n +1 = 20m² +20m +5

  4n² +4n = 4(4m² +4m +1)

  n(n+1) = (2m+1)²

The expression on the left will be even for any integer n; the expression on the right will be odd for any integer m. This equation cannot be satisfied for any integers m and n, so contradicting our assumption √5 = p/q.

We have shown using "proof by contradiction" that √5 cannot be the ratio of integers.

What can you conclude about the slope of the values in
the table? Check all that apply.
lope
The slope is 0.
The slope is undefined.
The graph will be a horizontal line.
The graph will be a vertical line.
The graph will have a line with a positive slope.

Answers

Answer:

The slope is undefined.

The graph will be a vertical line.

Step-by-step explanation:

just did it

The graph will be a vertical line. Option C is correct.

Given that,
The slope of the line is zero we have to determine what are the conditions.

What is the slope of the line?

The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
The slope of the line is zero,
m = 0
tanФ = 0
y / x = 0
for the above condition, Δy must be zero or Δx must be infinite and the line will be a verticle.

Thus, the graph will be a vertical line. Option C is correct.

Learn more about slopes here:
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Find the sum in lowest terms 1/55+6/11

Answers

Answer:

31/55

Step-by-step explanation:

The LCD is 55.

1/55 + 6/11 =

= 1/55 + 30/55

= 31/55

31 is prime, so the fraction cannot be reduced.

Answer: 31/55

A car can travel 38 miles on each gallon of gasoline. At that rate, how many gallons of gasoline will it take to travel
190 miles?
2
5
20
50

Answers

Answer:

5 gallons of gasoline

Step-by-step explanation:

since we have the number of miles the car drives per gallon (38) we can set up an equation

the equation would be the number of miles per gallon (38) times the number of gallons it would take to drive 190 miles (x) equals 190 miles

38x = 190

you then divide 190 by 38

x = 5 gallons

Five gallons of gasoline must be taken to travel 190 miles.

What is the unitary method?

The unitary method is a problem-solving methodology that involves first finding the value of a single unit and then finding the necessary value by multiplying the single unit value.

How many gallons of gasoline will it take to travel 190 miles?

On one-gallon gasoline, the car can travel 38 miles.

Let x gallons of gasoline be taken to travel 190 miles.

So, 38x=190

⇒x=190/38=5

Hence, 5 gallons of gasoline is taken to travel 190 miles.


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Death Valley is the location of the lowest land elevation in the USA which is 282 feet below sea level.The location with the highest level is 20,320 feet above sea level.What is the difference in the elevations of these two locations

Answers

Answer:

20,038

Step-by-step explanation:

20,320 - 282

Please help!

Add [-6-2 2] + [-3 2 1].

Answers

Answer:

Step-by-step explanation:

[-6 + -3      -2 + 2    2 + 1} =   [-9   0   3}

which number sets does 3/4 belong to?

Answers

The answer is it BELONGS TO THE RATIONAL SET

The number 3/4 is belong in Rational number.

Here,

The number is 3/4.

We have to find the number sets of 3/4 belong to.

What is Rational number?

A number that can be represented as the quotient p/q of two integers such that q ≠ 0.

Now,

The number is 3/4.

Clearly, the number is in the form of fraction p/q such that q ≠ 0.  

Hence, The number 3/4 is belong in Rational number.

Learn more about the rational number visit:

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How much interest does a $10,000 investment earn at 5.6% over 18 years? ​

Answers

Answer : $10,080

- I hope this helps that was a lot of math lol

The double box plot shows the test scores for Miss Robinson's second and fourth period
classes. Based on the double box plot, which sentence is true?

Answers

Answer: The second period class has the greater first quartile.

The second-period class has the greater first quartile. Then the correct option is A.

What is a double box?

Like the other twin graph styles discussed in earlier sections, double package plots provide for a fast detailed evaluation of two sets of data.

The double box plot shows the test scores for Miss Robinson's second and fourth-period classes.

Based on the double box plot. Then the true sentence will be

The second-period class has the greater first quartile. Test Scores

Then the correct option is A.

More about the double box link is given below.

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Solve the following proportion for
5/11=y/6
Round your answer to the nearest tenth

Answers

Answer:

Step-by-step explanation:

5        y

_   =   _

11       6

Cross multiply to get:

11y = 30

y = 2.7272

y = 2.7

Write 0.0000002711 in scientific notation. (Use 2 numbers after the decimal point.)

Answers

Answer:

[tex]Number = 2.71 * 10^{-7}[/tex]

Step-by-step explanation:

Given

[tex]Number = 0.0000002711[/tex]

Required

Write, using scientific notation

The scientific notation is written in the form:

[tex]Form = a * 10^n[/tex]  Where n is an integer and [tex]1 \leq a \leq 10[/tex]

To start with; Represent the given number as fraction

[tex]Number = \frac{2711}{10000000000}[/tex]

Represent the denominator as an exponent

[tex]Number = \frac{2711}{10^{10}}[/tex]

This can be rewritten in form of:

[tex]Number = 2711 * 10^{-10}[/tex]

Remember that: [tex]Form = a * 10^n[/tex]  Where n is an integer and [tex]1 \leq a \leq 10[/tex]

This implies that; we need to adjust 2711 to a number between 1 and 10;

This gives:

[tex]Number = 2.711 * 1000 * 10^{-10}[/tex]

Write 1000 as an exponent

[tex]Number = 2.711 * 10^3 * 10^{-10}[/tex]

Apply law of indices

[tex]Number = 2.711 * 10^{3-10}[/tex]

[tex]Number = 2.711 * 10^{-7}[/tex]

The question requires 2 numbers after the decimal point;

So, 2.711 will be approximated to 2.71

[tex]Number = 2.71 * 10^{-7}[/tex]

Hence;

[tex]0.0000002711[/tex]  is equivalent to [tex]2.71 * 10^{-7}[/tex]

A cylindrical can has a volume of 16 cm 3. What dimensions yield the minimum surface​ area? 1. The radius of the can with the minimum surface area is ______ cm. (Simplify your answer.) 2. The height of the can with the minimum surface area is ______ cm. (Simplify your answer.)

Answers

Answer:

radius = 1.37 cm

height = 2.71 cm

Step-by-step explanation:

We are given volume = 16 m³.

Formula for volume of a cylinder is;

V = πr²h

Thus,

πr²h = 16

h = 16/πr²

Now formula for the surface area is;

S = 2πr² + 2πrh

Putting 16/πr² for h gives;

S = 2πr² + 2πr(16/πr²)

S = 2πr² + 2π(16/πr)

S = 2π(r² + 16/πr)

To minimize, we will find the derivative of S and equate to zero

S' = 2π(2r - 16/πr²) = 0

4πr - 32/r² = 0

4πr = 32/r²

r³ = 32/4π

r = ∛(32/4π)

r = 1.37 cm

From h = 16/πr²;

h = 16/(π × 1.37²)

h = 2.71 cm

Find the domain and range. {(-2,0), (1,-2), (3,4)}

Answers

Answer:

[tex] \boxed{ \bold{ \boxed{ \sf{domain = { (- 2 \: , \: 1 \: , \: 3)}}}}}[/tex]

[tex] \boxed{ \bold{ \boxed{ \sf{range = ( \: - 2 \: , \: 0 \: , \: 4)}}}}[/tex]

Step-by-step explanation:

Domain is the set of all x values.

Range is the set of all y - values.

{ ( - 2 , 0 ) , ( 1 , -2 ) , ( 3 , 4 )}

Domain = { -2 , 1 , 3 }

{ ( -2 , 0 ) , ( 1 , -2 ) , ( 3 , 4 )}

Range = { - 2 , 0 , 4 }

Hope I helped!

Best regards! :D

If a =5, 0, −1,find a vector b such that compab = 2.b = _______.

Answers

Answer:

[tex]b  =  (q,r , 5q-2\sqrt{26} )[/tex]

Step-by-step explanation:

From the question we are told that

The vector given is  

               [tex]a = (5,0,-1)[/tex]

  Also  [tex]comp_a b =  2[/tex]

Generally

       [tex]comp_a b  =  \frac{a \cdot b}{|a|}[/tex]

Here  [tex]|a|[/tex] is the magnitude of  a which is mathematically represented as

      [tex]|a| =  \sqrt{5^2  + 0^2  +(-1)^2 }[/tex]

=>     [tex]|a| =  \sqrt{26}[/tex]

b is vector which we will assume to have the following parameters

     [tex]b  =  (q , r , x)[/tex]

So

        [tex]comp_a b =  \frac{(5,0,-1) \cdot (q,r,x)}{\sqrt{26} } =  2[/tex]

=>     [tex]\frac{5q + 0 -x}{\sqrt{26} } = 2[/tex]

=>     [tex]x =  5q-2\sqrt{26}[/tex]

Hence the vector be can be mathematically represented as

      [tex]b  =  (q,r , 5q-2\sqrt{26} )[/tex]

This means that the vector b is more than one value  since it is made up of variable

This means that if

   [tex]q = 1\\r=1\\x =1[/tex]

Then

    [tex]b  =  (1,1,5-2\sqrt{26} )[/tex]

         

A quantity has magnitude but not position, that's why in this the vector [tex]b =(0,0, -2\sqrt{26}).[/tex]

Vector:

If[tex]a =(5,0,-1)[/tex] Our goal is to determine a vector b that will allow comp to work properly [tex]_{a}b = 2.[/tex]

Allow the vector to flow naturally  [tex]b =(x, y,z)[/tex]

Recalling

comp[tex]_{a}b =\frac{a.b}{|a|}[/tex]

Therefore,

comp [tex]_{a}b= 2 \\\\[/tex]

[tex]\to \frac{a.b}{|a|}= 2\\\\[/tex]

[tex]\to \frac{(5,0,-1)\cdot (x,y,z)}{ |(5,0,-1)|} =2\\\\\to \frac{5x+0-z}{5^2+0+(-1)^2}=2\\\\ \to \frac{5x-z}{\sqrt{26}}= 2 \\\\\to 5x-z = 2\sqrt{26}\\\\ \to z=5x-2\sqrt{26}\\\\[/tex]

As a result, the vector b can be expressed as,

[tex]\to b =(x,y,z) =(x, y, 5x-2\sqrt{26}) \\\\[/tex]

As a result, this aforementioned form can be found in an endless number of vectors.

One of them is [tex]b =(0,0, -2\sqrt{26}).[/tex]

Find out more about the vector here:

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35 POINTSThe line contains the point (-8,7) and is perpendicular to 3x+2y=-7 The equation of the line is:

Answers

Answer:

The answer is

[tex]y = \frac{2}{3} x + \frac{37}{3} [/tex]

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

To find the equation of the perpendicular line we must first find the slope of the original line

We must first write the equation in the general form above in order to find the slope

3x + 2y = - 7

2y = - 3x - 7

Divide both sides by 2

y = - 3/2x - 7/2

Comparing with the general equation above

Slope = - 3/2

Since the lines are perpendicular to each other the slope of the perpendicular line is the negative inverse of the original line

Slope of perpendicular line = 2/3

So the equation of the line using point (-8,7) and slope 2/3 is

[tex]y - 7 = \frac{2}{3} (x + 8) \\ y - 7 = \frac{2}{3} x + \frac{16}{3} \\ y = \frac{2}{3} x + \frac{16}{3} + 7[/tex]

We have the final answer as

[tex]y = \frac{2}{3} x + \frac{37}{3} [/tex]

Hope this helps you

Using calculus, it can be shown that if a ball is thrown upward with an initial velocity of 16 ft/s from the top of a building 704 ft high, then its height h above the ground t seconds later will be h = 704 + 16t − 16t2. During what time interval (in seconds) will the ball be at least 32 ft above the ground? (Enter your answer using interval notation.)

Answers

Answer:

  [0, 7]

Step-by-step explanation:

We want the height to be greater than or equal to 32 ft, so ...

  704 +16t -16t^2 ≥ 32

  t^2 -t -42 ≤ 0 . . . . . . . . . . . subtract 32, divide by -16

  (t -7)(t +6) ≤ 0

This inequality will be true for values of t between -6 and +7. Since we're only concerned with times t ≥ 0, the appropriate solution interval is ...

  0 ≤ t ≤ 7 . . . . [0, 7] in interval notation

You bought a magazine for $2 and three candy bars. You spent a total of $11. How much did each candy bar cost?

Answers

Answer:

$3 each

Step-by-step explanation:

Minus the $2 from $11 gives you $9. So $9÷3=$3 per candy bar.

work out (7x10^5)\div (2x10^2) give your answer in standard form

Answers

answer: 200dvi

I hope this helped, not entirley sure if I did it correctly.

Hey there!

(7 * 10^5) ÷ (2 * 10^2)

10^5

= 10 * 10 * 10 * 10 * 10

= 100 * 100 * 10

= 10,000 * 10

= 100,000

10^2

= 10 * 10

= 100

= (7 * 100,000) ÷ (2 * 100)

7 * 100,000

= 700,000

2 * 100

= 200

700,000 ÷ 200

= 3,500

Therefore, your answer is: 3,500

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Find the slope of the curve below at the given points. Sketch the curve along with its tangents at these points. R = sin 2 theta: theta = plusminus pi/4, plusminus 3 pi/4 The slope of the curve at theta = pi/4 is:__________

Answers

Answer:

   -1    

Step-by-step explanation:

Given that:

r = sin 2θ  , θ = ± π/4 , ± 3π/4

Recall that:

x = r cosθ

y = r sinθ

The  differential of y with respect to x

[tex]\dfrac{dy}{dx} = \dfrac{\dfrac{dy}{d \theta}}{\dfrac{dx}{d \theta}}[/tex]

[tex]\dfrac{dy}{dx} =\dfrac{\dfrac{dy}{d \theta}}{\dfrac{dx}{d \theta}} = \dfrac{ r cos \theta + sin \theta* \dfrac{dr}{d \theta} } {\dfrac{dr}{d \theta} *cos \theta- sin \theta \ r}[/tex]

at  θ = π/4  , r = sin π/2

r = 1

[tex]\dfrac{dy}{dx} = \dfrac{ r cos \theta + 2 cos (2 \theta)*sin \ \theta } {2 \ cos (2 \theta) *cos \theta- sin 2 \theta * sin \theta}[/tex]

where;

θ = π/4

[tex]\dfrac{dy}{dx} = \dfrac{ 1 \times cos (\dfrac{\pi}{4}) + 2 cos (\dfrac{\pi}{2})*sin (\dfrac{\pi}{4}) } {2 \ cos (\dfrac{\pi}{2})*cos (\dfrac{\pi}{4})- sin (\dfrac{\pi}{2}) * sin (\dfrac{\pi}{4})}[/tex]

[tex]\dfrac{dy}{dx} = \dfrac{\dfrac{1}{\sqrt{2}}+0 }{0-1 * \dfrac{1}{\sqrt{2}}}[/tex]

[tex]\dfrac{dy}{dx} = \dfrac{\dfrac{1}{\sqrt{2}} }{- \dfrac{1}{\sqrt{2}}}[/tex]

[tex]\mathbf{\dfrac{dy}{dx} =-1}[/tex]

slope of the curve (dy/dx) at theta(θ)  = pi/4 is -1

Find the 10th term of the geometric sequence a9=-5 r=-1/2

Answers

Answer:

2.5

Step-by-step explanation:

multiply -5 by -1/2

morgan bought a pair of shoes at a sale of 25% . if the amount she paid was $1000 , find the market price ?​

Answers

Answer:

$4,000

Step-by-step explanation:

to find the market price you:

1000x100=100000

100000/25=4000

Answer:

4,000

Step-by-step explanation:

The expression 3A + 2.5S gives the cost in dollars of A adult tickets and S student tickets. What is the cost of 2 adult tickets and 4 student ​

Answers

Answer:

16

Step-by-step explanation:

A = 2; S = 4

3A + 2.5S =

= 3(2) + 2.5(4)

= 6 + 10

= 16

Write 20% as a decimal.
Answer ?

Answers

Answer:

0.2

Step-by-step explanation:

Step 1:

20 divided by 100 = 0.2

Answer:

0.2

If you want to get a decimal from a percent you need to divide the percent by 100.

Hope This Helps :)

Remember all decimal are basicaly,

x% = (x)/(100)

so

20%=(20)/(100)=0.20

-5/10 + 7/10 . what is the answer

Answers

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!

Solve for y: 3x - 4y = 12​

Answers

3x-4y=12
4y=3x-12
y=(3x-12)/4
y=(3/4)x-3

Answer:

y = 3/4x -3

Step-by-step explanation:

[tex]3x-4y=12\\[/tex]

Move 3x to the right and change its sign

[tex]-4y = -3x+12[/tex]

Divide both sides of the equation by -4

[tex]\frac{-4y}{-4} =\frac{-3x}{-4} + \frac{12}{-4} \\\\y = \frac{3}{4} x -3[/tex]

Which of the following is the solution of the equation 3x + 4=19 use substitution to identify the correct answer

Answers

Answer:

5

Step-by-step explanation:

Step 1:

3x + 4 = 19

Step 2:

3x = 19 - 4

Step 3:

3x = 15

Answer:

x = 5

Hope This Helps :)

3 x+4=19
3 x=19-4
3 x=15
3 x/3=15/3
x=5

10 times as many as 5 tens is 5thousand

Answers

Answer:

This question does not make sense for very specific reasons

Step-by-step explanation:

1. 5,000 does not look like 5thousand

2. 10 times as many as 5 tens is not really a question at all

3. the question itself already contains the answer 5,000

3x(x + 2) ......................

Answers

Your answer is 3x+2 so 5x

Answer:

3x^2+6x

Step-by-step explanation:

3x(x+2)

First distribute the 3x

You end up with

(3x^2+6x)

and that is the answer.

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