Write the the function f(x) = -5(x + 5)² - 2 in the form f(x) = ax² +bx+c

Answers

Answer 1
[tex]-5(x+5)^2-2[/tex]

start expanding the squared expression using the square of a binomial,

[tex](a+b)^2=a^2+2\ast a\ast b+b^2[/tex]

then,

[tex]\begin{gathered} (x+5)^2=x^2+2\ast5\ast x+5^2 \\ (x+5)^2=x^2+10x+25 \end{gathered}[/tex]

replace in the original function

[tex]-5(x^2+10x+25)-2[/tex]

apply distributive and simplify

[tex]\begin{gathered} -5x^2-50x-125-2 \\ -5x^2-50x-127 \end{gathered}[/tex]

Answer:

[tex]-5x^2-50x-127[/tex]


Related Questions

Consider the following data. The expected value is -2.1.Find the variance, standard deviation, P(X ≥ -1), and P(X ≤ -3).

Answers

Given

The data,

To find:

The variance, standard deviation, P(X ≥ -1), and P(X ≤ -3).

Explanation:

It is given that,

Then,

The variance is,

[tex]\begin{gathered} Var[x]=(-4-(-2.1))^2\times0.2+(-3-(-2.1))^2\times0.3+(-2-(-2.1))^2 \\ \times0.1+(-1-(-2.1))^2\times0.2+(0-(-2.1))^2\times0.2 \\ =(-4+2.1)^2\times0.2+(-3+2.1)^2\times0.3+(-2+2.1)^2\times0.1+(-1+2.1)^2 \\ \times0.2+(2.1)^2\times0.2 \\ =3.61\times0.2+0.81\times0.3+0.01\times0.1+1.21\times0.2+4.41\times0.2 \\ =0.722+0.243+0.001+0.242+0.882 \\ =2.09 \end{gathered}[/tex]

And the standard deviation is,

[tex]\begin{gathered} SD=\sqrt{Var[x]} \\ =\sqrt{2.09} \\ =1.45 \end{gathered}[/tex]

Also,

[tex]\begin{gathered} P\left(X≥-1\right)=P(X=-1)+P(X=0) \\ =0.2+0.2 \\ =0.4 \\ P\left(X≤-3\right)=P(-4)+P(-3) \\ =0.2+0.3 \\ =0.5 \end{gathered}[/tex]

Hence, the answers are,

Variance is 2.09

Standard deviation is 1.45

P(X ≥ -1) is 0.4

P(X ≤ -3) is 0.5.

It takes 2000 bees 1 year to make 7 jars of honey. How long will it take 5000 bees to make 70 jars of honey?

Answers

If the bees are working at the same rate, the number of years taken to make 70 jars is 4 years.

What is the rate of jar making by a bee?

The rate at which a bee makes a jar is calculated as follows;

rate = 2000 bees / 7 Jars

rate = 285.71 b/J

The later of rate of the bees is calculated as follows;

rate = 5000 bees / 70 jars

rate = 71.42 b/J

If the bees were to maintain the first rate, the number of years taken to make 70 jars is calculated as follows;

number of years = (285.71) / (71.42) = 4 years

Learn more about rate of work here: https://brainly.com/question/1144815

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1. Which fraction equals a repeatingdecimal?530АC503013B.1325D1013

Answers

5/30 = 1/6 = 0.16666667

13/25 = 0.52

30/50 = 3/5 = 0.6

13/10 = 1.3

As you can see the fraction which is equal to a repeating decimal is:

5/30 = 1/6 = 0.16666667

The table of values represents a quadratic function.What is the average rate of change for f(x) from x=−10 to x = 0?Please help me with this problem so that my son can understand better. Enter your answer in the box.xf(x)−10184−5390−654910204

Answers

We are given a quadratic function and the rather than the equation for this function we already have the outputs at each given input as shown in the table provided. This means, for example, for the function given, when the input is -10, the output is 184. Thus the table includes among other values;

[tex]x=-10|f(x)=184[/tex]

To calculate the average rate of change we shall apply the formula for the slope (which is also the average rate of change). This is given below;

[tex]\text{Aerage Rate of Change}=\frac{f(b)-f(a)}{b-a}[/tex]

Note that the variables are;

[tex]\begin{gathered} f(a)=\text{first input value} \\ f(b)=\text{second input value} \end{gathered}[/tex]

The first input value is -10 and the function at that value is 184

The second input value is 0 and the function at that value is -6

We now have;

[tex]\begin{gathered} a=-10,f(a)=184 \\ b=0,f(b)=-6 \end{gathered}[/tex]

We can now substitute these into the formula shown nearlier and we'll have;

[tex]\begin{gathered} \text{Ave Rate Of Change}=\frac{f(b)-f(a)}{b-a} \\ =\frac{-6-184}{0-\lbrack-10\rbrack} \end{gathered}[/tex][tex]\begin{gathered} =\frac{-190}{0+10} \\ \end{gathered}[/tex][tex]=\frac{-190}{10}[/tex][tex]\text{Average Rate of Change}=-19[/tex]

ANSWER:

The average rate of change over the given interval is -19

Please helpMe if your good with mathI appreciate it thank u!

Answers

Let x be the number of tshirt sold.

A/q,

[tex]\begin{gathered} 5x+40=125 \\ \Rightarrow5x=85 \\ \Rightarrow x=17 \end{gathered}[/tex]

Thus the number of tshirt sold is 17.

Find the lateral area of the cylinder .The lateral area of the given cylinder is _ M2(Round to the nearest whole number as needed .)

Answers

The lateral area of a cylinder is:

[tex]LA=2\pi rh[/tex]

r is the radius

h is the height

For the given cylinder:

As the diameter is 4m, the radius is half of the diameter:

[tex]r=\frac{4m}{2}=2m[/tex]

h=12m

[tex]\begin{gathered} SA=2\pi(2m)(12m) \\ SA=48\pi m^2 \\ SA\approx151m^2 \end{gathered}[/tex]Then, the lateral area of the given cylinder is 151 square meters

Express 2x-3y=-6 into y=mx+b

Answers

For this problem, we are given a certain expression and we need to write it in the "y=mx+b" form.

We need to isolate the "y" variable on the left side to solve this problem. We have:

[tex]\begin{gathered} 2x-3y=-6\\ \\ 2x-3y-2x=-6-2x\\ \\ \frac{-3y}{-3}=\frac{-6}{-3}-\frac{2x}{-3}\\ \\ y=2+\frac{2}{3}x\\ \\ y=\frac{2}{3}x+2 \\ \\ \end{gathered}[/tex]

The expression is y = (2/3)x+2.

Madeline is a salesperson who sells computers at an electronics store. She makes a base pay of $80 each day and then is paid a $20 commission for every computer sale she makes. Make a table of values and then write an equation for P, in terms of x, representing Madeline's total pay on a day on which she sells x computers.


I need the equation.

Answers

Answer:

I don’t know if I can send it answer

Step-by-step explanation:

I am asked to graph f(x) = (- 1/x-2) -1

Answers

Answer

[tex]f(x)=-\frac{1}{x-2}-1[/tex]

59.25 ÷ 0.75 = 1.06 × 7.3 =on chart. will send image

Answers

For the division, notice that we can multiply both numbers by 100, to get the following:

[tex]\begin{gathered} 59.25\cdot100=5925 \\ 0.75\cdot100=75 \end{gathered}[/tex]

then, we can make the long division:

therefore, the result of 59.25 ÷ 0.75 is 79

For the multiplication, we can write the following:

notice that since both factors have 2 digits and 1 digit each after the decimal point, the final result will have 3 digits after the decimal point,

Therefore, the result of 1.06 × 7.3 is 7.738

For p(2) = 7 + 10x - 12x^2 - 10x^3 + 2x^4 + 3x^5, use synthetic substitution to evaluate

Answers

Answer:

p(-3) = -428

Explanations:

Given the polynomial function expressed as:

[tex]p(x)=7+10x-12x^2-10x^3+2x^4+3x^5[/tex]

Determine the value of p(-3)

[tex]\begin{gathered} p(-3)=7+10(-3)-12(-3)_^2-10(-3)^3+2(-3)^4+3(-3)^5 \\ p(-3)=7-30-12(9)-10(-27)+2(81)+3(-243) \\ p(-3)=-23-108+270+162-729 \\ p(-3)=-428 \end{gathered}[/tex]

Hence the value of p(-3) is -428

4. Which of the following rules is the composition of a dilation of scale factor 2 following (after) a translation of 3 units to the right?

Answers

ANSWER

A. (2x + 3, 2y)

EXPLANATION

Let the original coordinates be (x, y)

First, there was a dilation of scale factor 2.

This means that the coordinates become:

2 * (x, y) => (2x, 2y)

Then, there was a translation of 3 units to the right. That is a translation of 3 units on the horizontal (or x axis).

That is:

(2x + 3, 2y)

So, the answer is option A.

This is due tomorrow! Smart people help me, please!!

Answers

Look in image :D ur welcome

Pedro can't decide which size pizza to order. The 10-inch cheese and sausage pizza is $4.99, while the 12-inch deluxe is $5.99. If he gets the 10-inch pizza, the total price will be divided among 3people. If he chooses the 12-inch pizza, then the total price will be divided among 4 people. Which is the better buy? How much will each person pay? (Use 3.14 for r.)A. 10-inch pizza; $1.50B. 12-inch pizza; $1.50C. 10-inch pizza; $1.66 D. 12-inch pizza; $1.66

Answers

Answer: The better buy is the the 12-inch deluxe for $5.99.

B. 12-inch pizza; $1.50

Explanation:

From the information given, the 10-inch cheese and sausage pizza is $4.99, while the 12-inch deluxe is $5.99. If he gets the 10-inch pizza. We would calculate the area of both pizzas by applying the formula for calculating the area of a circle which is expressed as

Area = πr^2

where

π = 3.14

r is the radius of the circle

For the 10-inch cheese and sausage pizza,

diameter = 10

r = 10/2 = 5

Area = 3.14 x 5^2 = 78.5

If it is divided among 3 people,

each person gets 78.5/3 = 26.2 in^2

Amount that each person pays = 4.99/3 = $1.66

This means that each person pays $1.66 for 26.2 in^2

For the 12-inch cheese and sausage pizza,

diameter = 12

r = 12/2 = 6

Area = 3.14 x 6^2 = 113.04

If it is divided among 4 people,

each person gets 113.04/4 = 28.26 in^2

Amount that each person pays = 5.99/4 = $1.5

This means that each person pays $1.5 for 28.26 in^2

Thus, the better buy is the the 12-inch deluxe for $5.99.

The amount that each person pays is

B. 12-inch pizza; $1.50

The coordinate pairs for triangle ABC are A(1,2), B(4,5), C(2,2). It undergoes a translation of 2 units right and 1 unit 1 up. Write down the coordinates of A'

Answers

We will have the transformation rule (x, y) -> (x+2, y+1)

Then, for A' we will have:

A'(3, 3)

B'(6, 6)

C'(4, 3)

What is the slant height and surface area of the pyramid

Answers

we have that

The surface area of the pyramid is equal to the area of its square base plus the area of its four triangular faces

step 1

Find out the area of the square base

A=15^2

A=225 ft2

step 2

Find out the area of one triangular face

the area of a triangle is equal to

A=(1/2)(b)(h)

we have

b=15 ft

h ----> is the slant height

To find out the slant height, apply the Pythagorean Theorem

h^2=10^2+(15/2)^2

h^2=100+56.25

h=12.5 ft

therefore

A=(1/2)(15)(12.5)

A=93.75 ft2

step 3

The surface area is equal to

SA=225+4(93.75)

SA=600 ft2 and the slant height is 12.5 ft

find the x value (6x+9)° (4x-19)°

Answers

In this problem m and n are parallel lines, and the first angle is an exteriar angle an the secon is a interior angle.

this two condition give us that the two angles are complementary anlges so the sum of them should be 180 so:

[tex]6x+9+4x-19=180[/tex]

and we can solve for x so:

[tex]\begin{gathered} 10x-10=180 \\ 10x=180+10 \\ x=\frac{190}{10} \\ x=19 \end{gathered}[/tex]

In 2005 there were 744 radio stations, by 2015 that number had increased by 13.8%. How many radio stations in 2015?

Answers

Answer: We have to find the radio stations in 2015, which is 13.8% more than the radio stations in 2005 which were 744:

[tex]\begin{gathered} x=\text{ Radio stations in 2015} \\ \\ x=(1.138)\times(744) \\ \\ x=846.672 \\ \\ x\approx847 \end{gathered}[/tex]

when his bus arrives Calvin is 40 ft east of the corner the door of the bus is 30 feet north of the corner how far will Calvin run directly across the field to the bus

Answers

Since this situation can be represented by a right triangle, we can use the pythagorean theorem. Doing so, we have:

[tex]\begin{gathered} a^2+b^2=c^2\text{ } \\ (30)^2+(40)^2=c^2\text{ (Replacing)} \\ 900+1600=c^2\text{ (Raising both numbers to the power of 2)} \\ 2500=c^2\text{ (Adding)} \\ \sqrt[]{2500}=\sqrt[]{c^2} \\ 50=c\text{ (Taking the square root of both sides)} \\ \text{The answer is 50 ft} \end{gathered}[/tex]

Please help! I think this is a simple question but I'm overthinking.

Answers

We have the following:

We can solve this question by means of the Pythagorean theorem since it is a right triangle, in the following way:

[tex]c^2=a^2+b^2[/tex]

a = 2.3

b = 3.4

replacing

[tex]\begin{gathered} c^2=2.3^2+3.4^2 \\ c^2=5.29+11.56 \\ c=\sqrt[]{16.85} \\ c=4.1 \end{gathered}[/tex]

Therefore, the answer is 4.1

A leaking pond loses 16 gallons of water in 47 hours. How many gallons of water will it lose in 33 hours?

Answers

A leaking pond loses 16 gallons of water in 47 hours.

How many gallons of water will it lose in 33 hours?

To solve this question we can use a rule of three:

16 gallons is to 47 hours as x gallons is to 33 hours:

[tex]\frac{16}{47}=\frac{x}{33}\Longrightarrow x=\frac{33\cdot16}{47}=\frac{528}{47}=\text{ 11.23}[/tex]

Answer:

11.23 gallons

f(x) is concave down on the interval (a, b) if f'(x) is decreasing on (a, b).
O True
O False

Answers

I believe the android is true. Not 100% sure tho

g(x) = 2x - 5f(x) = 4x + 2Find g(f(x))

Answers

[tex]g(f(x))=8x-1[/tex]

Explanation

Step 1

Let

[tex]\begin{gathered} g(x)=2x-5 \\ \text{and} \\ f(x)=4x+2 \end{gathered}[/tex]

then

[tex]\begin{gathered} g(f(x))= \\ g(x)=2x-5 \\ g(f(x))=2(4x+2)-5 \\ \text{apply distributive property} \\ g(f(x))=8x+4-5 \\ g(f(x))=8x-1 \end{gathered}[/tex]

I hope this helps you

What is a rational number between -0.45 and -0.46?

Answers

Answer:-0.4545555...,-0.453333...,-0.45222.....

hope i helped

Step-by-step explanation:

Consider the non-right triangle below.Suppose that m∠CAB=62∘, and that x=35 cm and y=17 cm. What is the area of this triangle? cm^2   

Answers

Given that:

x=35 cm and y=17 cm

and angle CAB= 62 degree

[tex]\begin{gathered} A=\frac{1}{2}\times x\times y\times\sin (\angle CAB) \\ A=\frac{1}{2}(35)(17)\sin (62) \\ A=297.5\times\sin (62) \\ A=262.67cm^2 \end{gathered}[/tex]

Find the center, vertices, foci, endpoints of the latera recta and equations of the directrices. Then sketch the graph of the ellipse.

Answers

The given equation of ellipse is,

[tex]\frac{(x-2)^2}{16}+\frac{y^2}{4}=1\text{ ---(1)}[/tex]

The above equation can be rewritten as,

[tex]\frac{(x-2)^2}{4^2}+\frac{y^2}{2^2}=1\text{ ----(2)}[/tex]

The above equation is similar to the standard form of the ellipse with center (h, k) and major axis parallel to x axis given by,

[tex]\frac{(x-h)^2}{a^2}+\frac{y^2}{b^2}=1\text{ ----(3)}[/tex]

where a>b.

Comparing equations (2) and (3), h=2, k=0, a=4 and b= 2.

Hence, the center of the ellipse is (h, k)=(2, 0).

The coordinates of the vertices are given by,

[tex]\begin{gathered} (h+a,\text{ k)=(2+}4,\text{ }0)=(6,\text{ 0)} \\ (h-a,\text{ k)=(2-}4,\text{ }0)=(-2,\text{ 0)} \end{gathered}[/tex]

Hence, the coordinates of the vertices are (6, 0) and (-2,0).

The coordinates of the co-vertices are given by,

[tex]\begin{gathered} (h,\text{ k+}b)=(2,\text{ }0+2)=(2,\text{ 2)} \\ (h,\text{ k-}b)=(2,\text{ }0-2)=(2,\text{ -2)} \end{gathered}[/tex]

Hence, the coordinates of the co-vertices are (2, 2) and (2, -2).

The coordinates of the foci are (h±c, k).

[tex]\begin{gathered} c^2=a^2-b^2 \\ c^2=4^2-2^2 \\ c^2=16-4 \\ c^2=12 \\ c=2\sqrt[]{3} \end{gathered}[/tex]

Using the value of c, the coordinates of the foci are,

[tex]\begin{gathered} \mleft(h+c,k\mright)=(2+2\sqrt[]{3},\text{ 0)} \\ (h-c,k)=(2-2\sqrt[]{3},\text{ 0)} \end{gathered}[/tex]

Therefore, the coordinates of the foci are,

[tex](2+2\sqrt[]{3},\text{ 0) and }(2-2\sqrt[]{3},\text{ 0)}[/tex]

The endpoints of the latus rectum is,

[tex]\begin{gathered} (h+c,\text{ k}+\frac{b^2}{a})=(2+2\sqrt[]{3},\text{ 0+}\frac{2^2}{4^{}}) \\ =(2+2\sqrt[]{3},\text{ 1)}^{} \\ (h-c,\text{ k}+\frac{b^2}{a})=2-2\sqrt[]{3},\text{ 0+}\frac{2^2}{4^{}}) \\ =(2-2\sqrt[]{3},\text{ 1}^{}) \\ (h+c,\text{ k-}\frac{b^2}{a})=(2+2\sqrt[]{3},\text{ 0-}\frac{2^2}{4^{}}) \\ =(2+2\sqrt[]{3},\text{ -1}^{}) \\ (h-c,\text{ k-}\frac{b^2}{a})=(2-2\sqrt[]{3},\text{ 0-}\frac{2^2}{4^{}}) \\ =(2-2\sqrt[]{3},\text{ -1}^{}) \end{gathered}[/tex]

Therefore, the coordinates of the end points of the latus recta is,

[tex](2+2\sqrt[]{3},\text{ 1)},\text{ }(2-2\sqrt[]{3},\text{ 1}^{}),\text{ }(2+2\sqrt[]{3},\text{ -1}^{})\text{ and }(2-2\sqrt[]{3},\text{ -1}^{})[/tex]

Now, the equations of the directrices is,

[tex]\begin{gathered} x=h\pm\frac{a}{e} \\ x=\pm\frac{a}{\sqrt[]{1-\frac{b^2}{a^2}}} \\ x=2\pm\frac{4}{\sqrt[]{1-\frac{2^2}{4^2}}} \\ x=2\pm\frac{4}{\sqrt[]{1-\frac{1^{}}{4^{}}}} \\ x=2\pm\frac{4}{\sqrt[]{\frac{3}{4}^{}}} \\ x=2\pm4\sqrt[]{\frac{4}{3}} \end{gathered}[/tex]

Here, e is the eccentricity of the ellipse.

Therefore, the directrices of the ellipse is

[tex]x=2\pm4\sqrt[]{\frac{4}{3}}[/tex]

Now, the graph of the ellipse is given by,

The sum of a number and -4 is greater than 15. Find the number

Answers

x > 19

Explanation:

Let the number = x

The sum of a number and -4 = x + (-4)

The sum of a number and -4 is greater than 15:

x + (-4) > 15

Multiplication of opposite signs gives negative number:

x - 4 > 15

Collect like terms:

x > 15 + 4

x > 19

What is 150% of 38.

Answers

We are asked to find 150% of 38

Step 1:

Convert the 150% to decimal by removing the % sign which means dividing by 100.

150/100 = 1.5

Step 2:

Now simply multiply the decimal percentage with the number 38

1.5×38 = 57

Therefore, 150% of 38 is found to be 57

Find the slope of the two points: (-3,-2) & (5, -8)
ter Numerical value ONLY. NO Decimals
*

Answers

[tex](\stackrel{x_1}{-3}~,~\stackrel{y_1}{-2})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{-8}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-8}-\stackrel{y1}{(-2)}}}{\underset{run} {\underset{x_2}{5}-\underset{x_1}{(-3)}}} \implies \cfrac{-8 +2}{5 +3} \implies \cfrac{ -6 }{ 8 } \implies - \cfrac{ 3 }{ 4 }[/tex]

You use substitution to solve a system of equations and after simplifying end with a statement that says 7=7 discrible what this statement means about the number of solutions and about the graph of the system

Answers

7 = 7 is true for all values of x
Hence there are infinite solutions and the graphs of the system are concurrent.
If the system used straight lines then they would be on top of each other.
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