Giovanni Gaines
Arithmetic on Polynomial Expressions
Nov 21, 3:14:22 PM
If C=x^2+7x+5 and D=x^2-8, find an expression that equals 3C-2D in standard form.

Giovanni GainesArithmetic On Polynomial ExpressionsNov 21, 3:14:22 PMIf C=x^2+7x+5 And D=x^2-8, Find

Answers

Answer 1

Answer:

3C - 2D = x² + 21x + 31

Step-by-step explanation:

3C - 2D

= 3(x² + 7x + 5) - 2(x² - 8) ← distribute both parenthesis

= 3x² + 21x + 15 - 2x² + 16 ← collect like terms

= x² + 21x + 31 ← in standard form


Related Questions

Combine like terms Y - (-3y)

Answers

-3y squared is your answer

Jenny won a charity raffle. Her prize will be randomly selected from the 9 prizes shown below. The prizes include 4 rings, 3 cameras, and 2 headsets.
Prizes
(a) Find the odds against Jenny winning a headset.

(b) Find the odds in favor of Jenny winning a headset.

Answers

The odds against Jenny winning a headset are 88.89% or 8 out of 9, and the odds in favor of Jenny winning a headset are 11.11% or 1 out of 9.

Since Jenny won a charity raffle, and her prize will be randomly selected from the 9 prizes shown below, and the prizes include 7 rings, 1 camera, and 1 headset, to find the odds against Jenny winning a headset, and find the odds in favor of Jenny winning a headset, the following calculations must be performed:

· 1 headset out of 9 total prizes

· 1/9 = headset

· 1/9 x 100 = 11.11%

· 100 - 11.11 = 88.89%

Therefore, the odds against Jenny winning a headset are 88.89% or 8 out of 9, and the odds in favor of Jenny winning a headset are 11.11% or 1 out of 9.

Which graph represents the solution set of the system of inequalities?
y ≤ 2x + 1
y>-21-3

Answers

Answer:

see below

Step-by-step explanation:

1. Notice that your inequalities have ≤ and >. So one of the lines on the graph must be dotted, eliminating the bottom two choices.

2. The lines on both of the top choices are graphed identically, so now it's all about shading. The best way to determine correct shading is by testing a point to see if it makes a true statement in BOTH inequalities.

 a) Choose a point in the shaded region of the first option (I highly recommend (0,0)!!). Replace x and y in each inequality with the x and y from the point, and evaluate:

     0 ≤ 2(0) + 1?  ⇒  0 ≤ 1 TRUE

     0 > -2(0) - 3  ⇒  0 > -3 TRUE

 b) Since that point made both true statements, the first option is correct. If EITHER statement had been false, you would need to try a point in the shaded region of the second option. I recommend any where x=0 or y=0.

How do you isolate the variable by dividing each side by factors that don't contain the variable?

Answers

We isolate the variable in an equation by dividing both sides of the equation in which one side does not contain any variable.

According to the question,

We have the following information:

Isolating a variable by dividing each side of the equation in which one side does not contain any variable.

Now, in this case, it is clearly stated that the first step to isolate the variable from the equation is to perform division.

Now, this can be done as follows in the given equation:

2x = 14

Now, the variable x can be isolated by dividing both sides of the equation by 2:

x = 14/2

x = 7

Hence, we isolate the variable in an equation by dividing both sides of the equation in which one side does not contain any variable.

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the diagram shows squares 1 2 and 3

Answers

(Area of 1) + (Area of 2) = (Area of 3) this statement about the squares must be true.

What is Right angle traingle?

A right-angled triangle is a particular kind of triangle in which one of the angles is 90 degrees. The combined angles of the other two are 90 degrees. The triangle's base and perpendicular sides both include the right angle. The longest of the three sides, known as the hypotenuse, is the third side.

we know that;

By applying the Pythagorean Theorem;

[tex]c^2 = a^2 + b^2[/tex]                                                                 .............................(1)

Area of the square says A1;

A1 = a^2 unit^2                                                           ...............................(2)

Area of the square says A2;

A2 = b^2 unit^2                                                         .................................(3)

Area of the square says A1;

A3 = c^2 unit^2                                                         ..................................(4)

Replace the A1, A2, and A3 values in the equation 1 ;

A3 = A1 + A2

therefore;

(Area of 1) + (Area of 2) = (Area of 3).

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5x-1=3x+5 an equation

Answers

Answer:

[tex]x = 3[/tex]

Step-by-step explanation:

[tex]5x-1=3x+5[/tex]

Get the x's on one side.

Add 1:

[tex]5x-1=3x+5\\\box \ \ +1) \ \ (\ \ \ \ +1)[/tex]

[tex]5x=3x+6[/tex]

Subtract 3x from both sides.

[tex]\ \ \ 5x=\ \: 3x+6\\\underline{-3x} \ \ \ \ \underline{-3x}\\[/tex]

[tex]2x = 6[/tex]

Finally, divide both sides by 2.

[tex]2x / 2 = 6/2[/tex]

[tex]x = 3[/tex]

HELP ME QUICK PLEASE!!!!!

Which inequality is a true statement?
Select each correct answer.
-3>-1
-3 ≥ -1
-3=-1
-3≤-1
-3 <-1

Answers

Answer:

-3 <-1

-3 is less than -1.

What is an equation of the line that passes through the points (-6,6) and (-3,1)?

Answers

Answer:

y=-[tex]\frac{5}{3}[/tex]x-4

Step-by-step explanation:

find the slope m = [tex]\frac{y2-y1}{x2-x1}[/tex]

m=[tex]\frac{1-6}{-3+6}[/tex]

m=-[tex]\frac{5}{3}[/tex]

Use the slope and one of the points to solve for the y-intercept

y1=mx1+b

6=-[tex]\frac{5}{3}[/tex](-6)+b

6=10+b

b=6-10

b=-4

plug the values for m and b into y=mx+b

y=-[tex]\frac{5}{3}[/tex]x-4

Answer:

y= -1.6x+12Step-by-step explanation:

First find the slope.

m=y2-y1 / x2-x1

m= 1-6

-3-(-6)

m=-5

-3+6

m=-5

3

m= -1.6

y-y1=m(x-x1)

y-6= -1.6(x-(-6))

y-6= -1.6x+6

y=-1.6x+12


By rounding each number to the nearest 10, estimate the value of 197 ÷ 10.3

Answers

Answer:

20

Step-by-step explanation:

197 rounded to the nearest 10 is 200.

10.3 rounded to the nearest 10 is 10.

So, 200 ÷ 10 = 20

Answer:

20

Step-by-step explanation:

We are rounding to the nearest 10.

197≈200

10.3≈10

After you have rounded the numbers, The equation simplifies a whole bunch.

200/10=20

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Danielle Stevenson receives a commission of 6.5% for selling a $160,000 house. One- half of the comission goes to the broker, and one- half of the remainder to another salesperson. Stevenson receives the rest. Find the amount she receives.

Answers

Danielle Stevenson receives $2600.

What is a total amount?

A total is the sum of several numbers or the number of items in a group, as determined by addition or counting.

Here, we have

Danielle Stevenson receives a commission of 6.5% for selling a $160,000 house.

One-half of the commission goes to the broker and one-half of the remainder to another salesperson.

We have to find out how much amount she receives.

Danielle has a 6.5% × $160,000 = $10400

Then, Danielle half of $10400 to the broker so she remains $10400 × 1/2 = $5200

Now,

Danielle one-half of the $5200 to another salesperson. so she gets $5200 × 1/2 = $2600

Hence, Danielle Stevenson receives $2600.

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In, a city had a population of 310,000 people. Each year since 2007, the population has grown by 4.8%.
Let t be the number of years since. Let y be the city's population.
Write an exponential function showing the relationship between t and y.

Answers

The exponential function showing the relationship between t and y is y = 310000(1.048)⁺

How to determine the exponential function?

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

Initial population = 310000

Rate of growth = 4.8%

These parameters can be represeted as

a = 310000 and r = 4.8%

An exponential function is represented as

y = a(1 + r)⁺

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

y = 310000 (1 + 4.8%)⁺

Evaluate

y = 310000(1.048)⁺

Hence, the function is y = 310000(1.048)⁺

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Are the triangles congruent Why or why not triangle congruence ASA and AAS?

Answers

ΔABC and ΔRQM are congruent triangles. They are congruent by either ASA or AAS.

Two triangles are said to be congruent if their all corresponding sides are equal and all corresponding angles are equal in measure.

For the given question,

We know that the sum of all angles of a triangle is 180°.

For ΔABC,

∠A + ∠B + ∠C = 180°

42° + 53° + ∠C = 180°

95° + ∠C = 180

∠C = 85°

For ΔABC and ΔRQM,

∠A = ∠R

∠C = ∠Q

AB = RM

So, by the AAS postulate, ΔABC and ΔRQM are congruent triangles.

For ΔRQM,

∠R + ∠Q + ∠M = 180°

42° + 85° + ∠M = 180°

∠M = 53°

For ΔABC and ΔRQM,

∠A = ∠R

∠B = ∠M

AB = RM

So, by the ASA postulate, ΔABC and ΔRQM are congruent triangles.

Therefore, ΔABC and ΔRQM are congruent triangles. They are congruent by either ASA or AAS.

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The complete question is -

Are the triangles congruent Why or why not triangle congruence ASA and AAS?

It snowed 40% more this year than it did last year. If it snowed 45 inches last year, how much did it snow this year?

Answers

Answer:

.4 times 45

That means it snowed 63 inches

Step-by-step explanation:

Answer:

-5 johu tella no for the best

Step-by-step explanation:

one sfeoo by and the offer and the nd.

Your new warehouse robot will make things a lot easier; however you still need your staff to do the delicate part. Hence they need to learn each other. First time your warehouse employee tried replenishing a single order with the robot, it took 275 seconds. Calculate how much it will take after 17 repetitions with a learning rate of
80%?
Number of repetitions: ???

Answers

The time it will take after 17 repetitions with the learning curve having a rate of 80% is of:

6.19 seconds.

What is the Learning Curve Formula?

The learning curve formula is an exponential function defined as follows:

[tex]y = ab^x[/tex]

In which the parameters are listed as follows:

a is the time it takes to make the first object.b is the rate.

Then y gives the time it takes to make the xth object.

In the context of this problem, the values of the parameters are given as follows:

a = 275, as it is the time that it takes the employee on the first time.b = 0.8, as it is stated in the problem that the learning rate is of 80%.

Then the time needed for the 17th repetition is of:

y = 275 x (0.8)^17 = 6.19 seconds.

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What is the double of 8 in math?

Answers

Using doubles plus one fact the sum of 8 + 8 + 1is equal to 17 it is done by simply adding 1 to the given number.

Doubles plus one fact is used to add numbers which are next to each other.

Doubles plus one fact is simply done by doubling the number and adding one to it.

The sum of 8 + 8 can be determined by using doubles plus one fact as:

Simply add 1 in 8 + 8 + 1 to get the result required.

8 + 8 + 1 = 17

Therefore by using doubles plus one fact the sum of 8 + 8 + 1 is equal to 17.

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A mathematical statement that ________ two quantities using <, >, =

Answers

Answer:

compares

Step-by-step explanation:

Find the domain of the function.

f(x)= 3 x−2

Answers

Answer:

All real numbers

Step-by-step explanation:

The domain of this function is - infinite, infinite

- ♾️,♾️

PLEASE HELP ASAP!!! FULL ANSWER!!!
A person standing close to the edge on top of a 40-foot building throws a ball vertically upward. The quadratic function h = − 16t^2 + 72t + 40 models the ball's height above the ground, h , in feet, t seconds after it was thrown.

a) What is the maximum height of the ball? _____________ feet

b) How many seconds does it take until the ball hits the ground? _____________ seconds

Answers

Answer:

a) 121 feet ; b) 5 seconds

Step-by-step explanation:

maximum height = y coordinare of vertex


x coordinate = -72/2 * -16

-72/-32 = 9/4 = 2.25


y coordinate =

-16(2.25)^2 + 72(2.25) + 40

-81 + 162 + 40

-81 + 202 = 121 feet


The ball hits the ground when y = 0

-16t^2 + 72t + 40 = 0

-2t^2 + 9t + 5 = 0


discriminant = 81 -4 (-2 * 5) = 81 -4(-10) = 81 + 40 = 121

We are searching only positive value

t = (-9 -11)/-4 = -20/-4 = 5 seconds

Please help will mark Brainly

Answers

Answer: Horizontal Translation

Step-by-step explanation:

FIND A:B IF A:C=4:5 A:D=2:3 B:D=1:2

Answers

Answer:

Step-by-step explanation:

The braking distance y in feet that it takes a car to stop on​ wet, level pavement can be estimated by y=1/25x^2 ​, where x is the speed of the car in miles per hour. Find the speed associated with the braking distance of 196 feet.

Answers

in essence, find "x" when y = 196

[tex]y = \cfrac{1}{25}x^2\qquad \stackrel{\textit{when y = 196}}{196=\cfrac{1}{25}x^2}\implies (196)(25)=x^2 \\\\\\ \sqrt{(196)(25)}=x\implies {\Large \begin{array}{llll} \stackrel{\frac{m}{h}}{70}=x \end{array}}[/tex]

How do you know if a function has an inverse?

Answers

A function has an inverse if passes both the vertical line test and horizontal line test .

The inverse of the function f is denoted by f⁻¹ and is pronounced "f inverse".

Although the inverse of a function looks like you're raising the function to the -1 power, it isn't. The inverse of a function does not mean the reciprocal of a function.

If the inverse of a function is also a function, then the inverse relation must pass a vertical line test. Since all the x-coordinates and y-coordinates are switched when finding the inverse, saying that the inverse must pass a vertical line test is the same as saying the original function must pass a horizontal line test.

If a function passes both the vertical line test (so that it is a function in the first place) and the horizontal line test (so that its inverse is a function), then the function is one-to-one and has an inverse function.

The graph of a function and its inverse are mirror images of each other. They are reflected about the identity function y=x.

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Graph the line for y-6=-4(x+2) on the coordinate plane.

Answers

Answer:

x

Step-by-step explanation:

x

Answer:

Step-by-step explanation:

the answer is 8

HURRY PLS!!

Kevin took $45 with him to spend on snack for himself and his friends at the movie theater. The price for each bucket of popcorn was $4. The price of each drink was half the price of a bucket of popcorn.
A. Sketch the graph that represents the situation and label the intercepts. Use one axis to represent the number of buckets of popcorn and the other axis to represent the number of drinks.
Explain your graph.

B. Graph the absolute value function.

C. (a) Graph a linear function of your choice. On the same graph, graph a linear function transformed 2 units up and 3 units down.
(b) What was the equation of your linear function in slope-intercept form?
(c) What was the equation of the transformed function in slope-intercept form?

Answers

The equation of Kevin's scenario is 4x + 2y = 45

The absolute equation is y = 2|x - 3| + 5The equation of the linear function in slope-intercept form is y = 2x + 3The equation of the transformed function in slope-intercept form is y = 2x - 1

How to determine Kevin's equation

From the question, we have the following parameters

Amount = $45Bucket of popcorn = $4Bucket of each drink= Half the bucket of popcorn = $2

Represent the buckets of popcorn with x and the number of drinks with y

So, we have the following equation

4x + 2y = total amount

This gives

4x + 2y = 45

See attachment for the graph

The graph of an absolute function

An absolute function is represented as

y = a|x - h| + k

Where the vertex is (h, k)

So, we make use of the following function

y = 2|x - 3| + 5

See attachment 2 for the graph

The graph of a linear function

Here, we are to make use of any equation

A linear equation is represented as

y = mx + b

Where

slope = m

y-intercept = b

So, we make use of

m = 2 and b = 3

This gives

y = 2x + 3

When transformed 2 units up and 3 units down, the resulting equation is

y = 2x + 2 - 3

Evaluate

y = 2x - 1

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a rectange has the area of 60 in2. what can its dimentions be? copy and fill in the chart. length 1,2,10,30,120,3,_,5,_ width 60,_,_,_,_,_,5,_,100
PLS HELP FAST

Answers

The length and width of the rectangle can be 30 and 2 inches, 1 inches and 60 inches and 12 inches and 5 inches.

How to find the area of a rectangle?

A rectangle is a quadrilateral with opposite sides equal to each other. Opposite sides of a rectangle is equal to each other.

A rectangle has the area of 60 in².

The dimension of the rectangle can be as follows:

area of a rectangle = lw

where

l = lengthw = width

Therefore,

60 = 30 × 2

60 = 1 × 60

60 = 12 × 5

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Please answer this It would mean alot to me.

Answers

The expression 8x + 4y is not equivalent to 4(2x + 1). Therefore, 8x + 4y = 4(2x + y)

How to find equivalent expression?

Two expressions are said to be equivalent if they have the same value irrespective of the value of the variable(s) in them.

Equivalent expressions are expressions that have similar value or worth but do not look the same.

Let's determine whether the expression 8x + 4y is equivalent to 4(2x + 1).

Let's factorise to know whether the expressions are equivalent.

Therefore, using the common factors,

8x + 4y = 4(2x + y)

Hence, the expression are not equivalent .

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What are the examples of ASA congruence?

Answers

Example 1: For Δ ABC, show that AB = AC and Δ ABC is isosceles if the bisector AD of ∠ A is perpendicular to side BC. Also, this condition satisfies the properties of the isosceles triangles.

thus, Δ ABC is an isosceles triangle.

Example 2: Prove that △ACF≅△AEB, if ∠C=∠E and AC=AE.

write -1/2x + 4 = 10 in slope intercept form

Answers

Answer:    y=-1/2x+4

Step-by-step explanation:

help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeehelp meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeehelp meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

66 wolves

Step-by-step explanation:

Consider now as the initial point, with the intiial population ([tex]y_{0}[/tex]) being 58  at  t=0.

We are looking for the population (y) in five years, aka when t=5. So let's sub in what we know into our equation to get the answer:

[tex]y=y_{0}e^{0.027t}[/tex]

[tex]y=(58)}e^{0.027(5)}= 66.3831334924[/tex]

A line is parallel to the line y = -x + 5 and passes through the point (4. - 1). Which of the following is an equation of the
line?

Answers

Answer:

y = -x + 3; could also be y + 1 = -(x - 4)  or  y = -(x - 4) - 1  or x + y = 3

Step-by-step explanation:

No options given, so I hope this helps.

1. Identify any of the equations that have the same slope as your given equation (-1). If there's only one, stop here.

2. Find the y-intercept by replacing (x,y)=(4,-1) in the equation y = -x + b and solve for b: -1 = -(4) + b  ==> 3 = b

3. Replace b in the equation y = -x + b with 3.

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FILL IN THE BLANK. if energy levels are low in a cell, the cytosolic concentration of___will be high and___will be turned on. 27 being civilly liable means a server or seller of alcohol briefly explain one diplomatic action that added territory to the united states in the period 1840 to 1855 Drag the labels onto the flowchart to indicate the sequence of events that occurs in the presynaptic cell (orange background) and the postsynaptic cell (blue background) after an action potential reaches a chemical synapse. the presynaptic cell (the sending neuron) to its synaptic terminal(s) Drag the labels onto the flowchart to indicate the sequence of events that occurs in the presynaptic cell (orange background) and the postsyna potential reaches a chemical synapse. neurotransmitter released into synaptic cleft action potential enters the presynaptic membrane a ) Ca2+ channels in presynaptic membrane open briefly neurotransmitter degraded or removed from cleft; ligand- gated ion channels close neurotransmitter binds to ligand-gated ion channels in postsynaptic membrane; channels open Ca2+ ions enter presynaptic cell neurotransmitter- containing vesicles fuse with presynaptic membrane What should be added to the terms of the ratio 1:2 to make it 2:1 ?