A power function with form y = ax passes through the points (2,
5
and 3,
81
Find the constants a
and pa=
p=

Answers

Answer 1

Answer: a = 47.3;

              p = 0.65

Step-by-step explanation: A power function is of the form [tex]y=ax^{p}[/tex] and passes through points (2,5) and (3,81), i.e.:

[tex]5=a.2^{p}[/tex]

[tex]81=a.3^{p}[/tex]

To determine the two unknows, solve the system of equations:

[tex]log5=log(a.2^{p})[/tex]

[tex]log81=log(a.3^{p})[/tex]

Using multiplication and power rules:

[tex]log5=loga+plog2[/tex]

[tex]log81=loga+plog3[/tex]

Giving values to constants:

0.7=loga+0.3p

2=loga+0.5p

This system of equations can be solved by subtracting each other:

[tex]-1.3=-0.2p[/tex]

p = 0.65

Substituting p into one of the equations above:

[tex]loga+0.5(0.65)=2[/tex]

[tex]loga=1.675[/tex]

[tex]a=10^{1.675}[/tex]

a = 47.3

The constants a and p of the power function which passes through points (2,5) and (3,81) are 47.3 and 0.65, respectively.


Related Questions

Is trapezoid ABDC the result of a dilation of trapezoid MNPQ by a scale factor of Two-fifths? Why or why not? Yes, because AB and CD are each Two-fifths the lengths MN and QP. Yes, because sides AB and CD are parallel to sides MN and QP. No, because AB is Two-fifths the length MN but CD is One-third the length QP. No, because sides AB and CD have different slopes from sides MN and QP.

Answers

C. No, because AB is Two-fifths the length MN but CD is One-third the length QP.

Answer:

C. No, because AB is 2/5 the length MN but CD is 1/3 the length QP

Step-by-step explanation:

got it right on edge 23

James Works in a flower shop. He will put 36 tulips in vases for a wedding. He must use the same number of tulips in each vase.How many tulips could be in each vase ?

Answers

Answer:

1,2,3,4,6,9,12,18,36

Step-by-step explanation:

Find the orthocenter for the triangle described by each set of vertices.
K (3.-3), L (2,1), M (4,-3)
Plzz help ASAP!!!​
I'll give brainliest if ur correct

Answers

Answer:

The orthocentre of the given vertices ( 2 , -3.5)

Step-by-step explanation:

Step(i):-

The orthocentre is the intersecting point for all the altitudes of the triangle.

The point where the altitudes of a triangle meet is known as the orthocentre.

Given Points are K (3.-3), L (2,1), M (4,-3)

The Altitudes are perpendicular line from one side of the triangle to the opposite vertex

The altitudes are  MN , KO , LP

step(ii):-

   Slope of the line  

                          [tex]KL = \frac{y_{2}-y_{1} }{x_{2}-x_{1} } = \frac{1-(-3)}{2-3} = -4[/tex]

The slope of MN =

The perpendicular slope of KL

                           = [tex]\frac{-1}{m} = \frac{-1}{-4} = \frac{1}{4}[/tex]

The equation of the altitude

                                 [tex]y - y_{1} = m( x-x_{1} )[/tex]

                                [tex]y - (-3) = \frac{1}{4} ( x-4 )[/tex]

                               4y +12 = x -4

                                x - 4 y -16 = 0 ...(i)

Step(iii):-

 Slope of the line  

                          [tex]LM = \frac{y_{2}-y_{1} }{x_{2}-x_{1} } = \frac{-3-1}{4-2} = -2[/tex]

The slope of KO =

The perpendicular slope of LM

                           = [tex]\frac{-1}{m} = \frac{-1}{-2} = \frac{1}{2}[/tex]

The equation of the altitude

                                 [tex]y - y_{1} = m( x-x_{1} )[/tex]

The equation of the line passing through the point K ( 3,-3) and slope

m = 1/2

                                [tex]y - (-3) = \frac{1}{2} ( x-3 )[/tex]

                                2y +6 = x -3

                             x - 2y -9 =0 ....(ii)    

Solving equation (i) and (ii) , we get

  subtracting equation (i) and (ii) , we get

                   x - 4y -16 -( x-2y-9) =0

                       - 2y -7 =0

                      -2y = 7

                        y = - 3.5

Substitute y = -3.5 in equation x -4y-16=0

               x - 4( -3.5) - 16 =0

               x +14-16 =0

                x -2 =0

                  x = 2

The orthocentre of the given vertices ( 2 , -3.5)

Solve for v. Show your work
10 - (3v - 1) = 5(9 - v)

Answers

Answer:

The value of v is -17.

Step-by-step explanation:

10-(3v-1)=5(9-v)

10-3v+1=45-v

11-3v=45-v

11-45=3v-v

-34=2v

-34÷2=v

-17=v

Find the volume of a sphere whose r is 20 inches?

Answers

Answer:

[tex]\boxed{\boxed{\pink{\bf \leadsto The \ Volume \ of \ the\ sphere\ is\ 33493.33 \ in.^3 }}}[/tex]

Step-by-step explanation:

According to the Question the radius of the sphere is 20 inches. And we know that the Volume of sphere is given by :-

[tex]\boxed{\orange{\sf Volume_{sphere}=\dfrac{4}{3}\pi r^3 }}[/tex]

And here radius is 20 in.

[tex]\implies Volume = \dfrac{4}{3}\pi r^3 \\\\\implies Volume =\dfrac{4}{3}\times\dfrac{22}{7}\times (20 in.)^3\\\\\implies \boxed{\bf Volume = 33493.33 in^3 }[/tex]

Hence the Volume of the sphere is 33493.33 inch³.

Answer:

33493.34

Step-by-step explanation:

r=20

volume of sphere= 4/3×πr^3

= 4/3×3.14×20^3

= 33493.34

or

r=20

volume of sphere= 4/3×πr^3

= 4/3×22/7×20^3

= 33523.80952

Evaluate.

23+4⋅2−7

1
5
9
36

Answers

Thats 24...? Im pretty sure....
It should be 20.2 if I did it right

Write 9.5 as a mixed number HELPPP

Answers

Uh the answer is 9 1/2

Answer:

1 4/5

Step-by-step explanation:

Ellie's mom has $75 and shares it equally between her 5 children. How much money does each child get?

Answers

Answer: 15

Step-by-step explanation: 75 divided by 5 = 15

Hope this helps!

217.09 in expanded form

Answers

200 + 10 + 7 + .09

This is because the expanded form is the number seperated.

Dilacey takes out a loan from the bank that charges a 10% interest rate. After 18 months,
she accrues $420 in simple interest. How much was the loan that Dilacey took out?

Answers

Answer:

Dilacey took a loan of $2800

Step-by-step explanation:

P=(Simple Interest×100)/R×T

P=$420×100/10×1½

P=$42000/15

P=$2800

In a game of chance there is a box filled with 20 black balls, 13 red balls, and 7 green
balls. If a single ball is drawn from the box, then what is the probability that the ball
is green?

Answers

Answer:

what are you even doing with all them balls

Step-by-step explanation:

GUYS PLEASE HELP! AND SOLVE THIS WITH ME!

Answers

Answer:

Step-by-step explanation:

* 33/100 = .3(bar)

* 23/50 =.46

* 6/8 = .75

* 1/3 = .3(bar)

* 7/10 =.7

* 21/81 = .26

* 3/16 = .1875

* 7/20 =.35

How many significant digits are in: 0.07008?

Answers

there are 4 significant figures in 0.07008
there are 4 !!!!!!!!

Please help me solve this...
Use the given information about a polynomial function to write the equation.
Degree 4. Root of multiplicity 2 at x=-2, and roots with multiplicity of 1 at x=6
and x=2. y-intercept at (0,10)

Answers

Answer:

[tex]\displaystyle f(x)=\frac{5}{24}(x+2)^2(x-6)(x-2)[/tex]

Step-by-step explanation:

The standard, factored polynomial function is given by:

[tex]f(x)=a(x-p)^n(x-q)^m...[/tex]

Where a is the leading coefficient,

p and q are factors,

And n and m are the powers or multiplicity they are being raised to.

We know that our polynomial function is of degree 4.

We have a root of multiplicity of 2 at x=-2.

So, our factor is:

[tex](x-(-2))=(x+2)\\[/tex]

It is has a multiplicity of 2, it is squared. So:

[tex](x+2)^2[/tex]

We have another root with multiplicity of 1 at x=6.

So, our factor is:

[tex](x-6)[/tex]

And since it is to the first power, we can write it as is.

Finally, we have another root of multiplicity of 1 at x=2.

So, our factor is:

[tex](x-2)[/tex]

Therefore, our entire function is:

[tex]f(x)=a(x+2)^2(x-6)(x-2)[/tex]

We still have to determine our leading coefficient, a.

We can use that y-intercept. The y-intercept is at (0, 10). So, when x=0, y=10. By substitution:

[tex]10=a(0+2)^2(0-6)(0-2)[/tex]

Evaluate:

[tex]10=a(4)(-6)(-2)[/tex]

Multiply:

[tex]10=48a[/tex]

Therefore:

[tex]\displaystyle a=\frac{10}{48}=\frac{5}{24}[/tex]

Therefore, our final function is:

[tex]\displaystyle f(x)=\frac{5}{24}(x+2)^2(x-6)(x-2)[/tex]

Write 56/90 as a fraction?

Answers

56/2 = 28

90/2 = 45

28/45

Answer:

By writing as a fraction, I am taking you mean to SIMPLIFY IT.

Step-by-step explanation:

As a fraction, 56/90 is 28/45

The number that divides 56 and 90 exactly is 2

56/2=28

90/2=45

So therefore, the answer is 28/45

What are the next three terms in the sequence 1, 7, 13, 19, ... ?

Answers

Answer:

The next three terms in the sequence are: 25,31, 37

The required sequence is: 1, 7, 13, 19,25,31, 37

Step-by-step explanation:

We need to find the next three terms in the sequence 1, 7, 13, 19, ...

First we need to find the difference between the terms

If we observe:

First term ; 1

Second term is : 1+6 = 7

Third term is: 7+6 = 13

Fourth term is: 13+6 = 19

So adding 6 to previous term we can find the next term as observed by the pattern

Fifth term will be: 19+6 = 25

Sixth term will be: 25+6 = 31

Seventh term will be: 31+6 = 37

So, the next three terms in the sequence are: 25,31, 37

The required sequence is: 1, 7, 13, 19,25,31, 37

Don't steal points
its not cool
i WILL report
and also
answer this and u could have a chance to get brainliest
ill be asking 10 questions
whoever has the best answer in any of these ill give brainliest :D

Answers

Answer:

The ceiling is lower than 3 meters.

Step-by-step explanation:

In the above, the product is less than 3. In this case, it will not include 3 as a choice, as if it would, the [tex]\leq[/tex] would be used.

This means that x would be any number that is less than 3. The only choice that gives a choice that means less than by the terms definition is A) The ceiling is lower than 3 meters.

~

If three coins are tossed, the probability of getting exactly one head is:

Answers

Answer:

3/ 8

Step-by-step explanation:

All possible outcomes are:

HHH TTT HTT THT TTH HHT HTH THH

PROBABLITY of getting exactly one head = 3/ 8

hope it helps!

It is 3/8 . If it was one then it would be 50/50

Tyson's math class has 12 boys and 8 girls. What is the ratio of boys to girls​

Answers

the answer is 12:8 !

is this correct pls help!

Answers

Answer:yes

Step-by-step explanation:

HELP ME A cheetah ran 75 meters at a speed of 25 meters per second. How long was the cheetah running?
3 seconds
5 seconds
30 seconds
50 seconds

Answers

3 seconds is the correct answer :)

Answer:

3 seconds

Step-by-step explanation:

75 divide 25 is equal 3

So Cheetah ran 3 second by running.

Help Me Plz!!!!!!!!!!!!!

Answers

Answer:

[tex] a = 6\sqrt 3,\:\:b =12,\:\:c=6\sqrt 2[/tex]

Step-by-step explanation:

[tex]by \: 30 \degree - 60 \degree - 90 \degree \: theorem \\ \\ 6 = \frac{1}{2} b\\ \\ 6 \times 2 = b \\ \\ 12 = b \\ \\ \huge\red {\boxed {b= 12}} \\ \\ a = \frac{ \sqrt{3} }{2} b \\ \\ a = \frac{ \sqrt{3} }{2} \times 12 \\ \\ \huge\purple {\boxed {a = 6 \sqrt{3}}} \\ \\ c = \frac{1}{ \sqrt{2} } b \\ \\ c = \frac{1}{ \sqrt{2} } \times 12 \\ \\ c = \frac{ \sqrt{2} }{2} \times 12 \\ \\ \huge\orange {\boxed {c = 6 \sqrt{2}}} \\ \\ [/tex]

For f(x) = 2 – 3x2, evaluate f(0.6).

Answers

Answer:

f(0.6) = 0.92

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 2 - 3x²

f(0.6) is x = 0.6

Step 2: Evaluate

Substitute in x:                    f(0.6) = 2 - 3(0.6)²Exponents:                          f(0.6) = 2 - 3(0.36)Multiply:                               f(0.6) = 2 - 1.08Subtract:                              f(0.6) = 0.92

Convert:

5 m = ________mm​

Answers

Answer:

5m = 5000 mm

Step-by-step explanation:

Khan Acad
Mean, median, a
What is the arithmetic mean of the following numbers?
8,10,8, 5,4,7,5,10,8

Answers

Answer:

7.222 (repeating)

Step-by-step explanation:

8 + 10 + 8 + 5 + 4 + 7 + 5 + 10 + 8 = 65

1      2    3    4    5    6    7    8     9

65 / 9 = 7.222 (repeating)

At a particular restaurant, each chicken wing has 80 calories and each slider has 300 calories. A combination meal with sliders and chicken wings is shown to have 1360 total calories and twice as many sliders as there are chicken wings. Write a system of equations that could be used to determine the number of chicken wings in the combination meal and the number of sliders in the combination meal. Define the variables that you use to write the system

Answers

Answer:

4 Sliders 2 chicken wings

Step-by-step explanation:
4x300=1200 2x80=160

hellllppp!! :(

write an equation of the line in slope-intercept form.

Answers

Answer:

y=2/5x+3

Step-by-step explanation:

brainliest pls

The slope of the line below is -5. Which of the following is the point-slope
form of the line?

A. y-8=-5(x+2)
B. y+8=-5(x-2)
C.y+8=5(x-2)
D.y-8=5(x+2)

Answers

Answer:

It Is A.y-8=-5(x+2)

Step-by-step explanation:

Find the coordinates of the point. The point is located eight units in front of the yz-plane, five units to the left of the xz-plane, and one unit below the xy-plan

Answers

Answer:

The coordinate of the point is (8,-5,-1).

Step-by-step explanation:

Given that the point is located 8 units in front of the yz-plane, 5 units to the left of the xz-plane, and 1 unit below the xy-plane.

According to the convention to the coordinate axis, the front of the yz-plane is the positive x-axis, right of xz-plane is the positive y-axis, and above of xy-plane is the positive z-axis.

As the point is located 8 units in front of the yz-plane, so x=8.

As the point is located 5 units to the left of the xz-plane, so y= -5.

As the point is located 1 unit below the xy-plane, so z= -1.

Hence, the coordinate of the point, (x,y,z)=(8,-5,-1).

i need to put equations into slope intercept and i need big help its a test grade

Answers

Answer:

4.

y= 2/3x + 3

Step-by-step explanation:

By using the distributive property on the right side of the equation you get 2/3x + 2. Then you add 1 to the right side to cancel out the (-1) on the left.

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