Write an equation of an exponential function of the form y=ab^x passing through the points (0,8) and (6,0.125)

Answers

Answer 1

Answer:

[tex]y=8\cdot \left(\dfrac{1}{2}\right)^x.[/tex]

Step-by-step explanation:

If the graph of exponential function passes through the points (0,8) and (6,0.125), then the coordinates of these points sutisfy the equation [tex]y=a\cdot b^x:\\[/tex]

[tex]8=a\cdot b^0\Rightarrow a=8,\\ \\0.125=8\cdot b^6\Rightarrow \dfrac{1}{8}=8\cdot b^6,\\ \\b^6=\dfrac{1}{64},\\ \\b^6=\dfrac{1}{2^6}\Rightarrow b=\dfrac{1}{2}.[/tex]

Thus, the equation of exponential function is

[tex]y=8\cdot \left(\dfrac{1}{2}\right)^x.[/tex]


Related Questions

solve
4-p/p-1=2/p-1

Answers

Answer:

Final answer is p=2.

Step-by-step explanation:

Given equation is [tex]\frac{4-p}{p-1}=\frac{2}{p-1}[/tex]

Cross multiply

[tex]\left(4-p\right)\left(p-1\right)=2\left(p-1\right)[/tex]

[tex]4p-4-p^2+p=2p-2[/tex]

[tex]4p-4-p^2+p=2p-2[/tex]

[tex]0=p^2-4p+4-p+2p-2[/tex]

[tex]0=p^2-3p+2[/tex]

[tex]0=p^2-1p-2p+2[/tex]

[tex]0=(p-1)(p-2)[/tex]

[tex]0=(p-1)[/tex] or [tex]0=(p-2)[/tex]

[tex]1=p[/tex] or [tex]2=p[/tex]

But p=1 will make denominator 0 and make the problem not defined.

Hence final answer is p=2

What is the mode for the data set?

67, 73, 78, 71, 80, 74, 79, 76, 75, 70, 72


P.S: Not actually asking just for anyone with this question.

Answers

Mode is the number that most occurs in the data. From the given data set, there is no repeated number. Thus, there is no mode for the data set.

Answer:

I just took the test the answer is: None

Step-by-step explanation:

GETS BRAINLIEST!!
There are 10 students in a class. The teacher chooses 3 students to go to the library. The order in which they are chosen does not matter. How many ways are there to choose the students ?

Answers

A class consists of ten individuals. The instructor selects three kids to accompany her to the library. It makes no difference in whatever sequence they are picked. There are 120 options for selecting pupils.

What are permutations and combinations?

A permutation is a process of putting items or pieces in a certain order. Combinations are a method of picking things or pieces from a set of objects or collections when the order of the objects is irrelevant.

No of student=10

Students to be choosen=3

The ways are there to choose the students are found with the help of combination as;

If n is the number of the ways:

n= 10C₃

[tex]\rm nCr = \frac{n!}{r!(n-r)!}\\\\[/tex]

Where n is the total of students and r is the teacher to be chosen:

[tex]\rm 10 C_3= \frac{10 !}{3!7!}\\\\ 10 C_3= \frac{3628800}{30240} \\\\ n=120[/tex]

Hence, there is 120 no of ways are there to choose a student.

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Answer: A class consists of ten individuals. The instructor selects three kids to accompany her to the library. It makes no difference in whatever sequence they are picked. There are 120 options for selecting pupils.

Step-by-step explanation:

thomas want to save money for a vacation. thomas invest 1,200 in account that pays an interest rate of 4% how many years will it take for the account to reach 14,400. round to the nearest hundredth

Answers

Answer:

63.36 years

Step-by-step explanation:

This is a compound interest problem and the following information has been provided;

Principal, P = 1200

Interest rate, r = 4%

Accumulated amount, A = 14400

We are required to determine the number of years for the principal to accumulate to the given amount. We use the compound interest formula;

[tex]A=P(1+r)^{n}[/tex]

We substitute the given values into the formula and solve for n;

[tex]14400=1200(1+\frac{4}{100})^{n}\\12=(1.04)^{n}\\[/tex]

The next step is to introduce natural logarithms;

[tex]ln12=nln(1.04)\\n=\frac{ln12}{ln1.04}\\n=63.36[/tex]

Final answer:

Thomas has invested $1,200 at a 4% interest rate. Using the formula for compound interest and solving for time, it will take approximately 29.1 years for his account balance to reach $14,400.

Explanation:

Thomas has invested an amount of $1,200 into an account with a 4% interest rate. This type of problem involves the use of the formula for compound interest. The general formula for compound interest is: A = P(1 + r/n)^(nt), where:

A is the amount of money accumulated after n years, including interest. P is the principal amount (the initial amount of money). r is the annual interest rate (in decimal). n is the number of times that interest is compounded per year. t is the number of years the money is invested for.

In this case, we assume the interest is compounded annually, so n = 1. We rearrange the formula to solve for t, giving us the formula t = log(A/P) / log(1 + r).

Substituting the given values into the formula, we get t = log(14400/1200) / log(1 + 0.04), which gives a result of approximately 29.1 years. So, it will take around 29.1 years for the account balance to reach $14,400.

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15 crackers weigh 69 grams. how many kilograms is this?

Answers

Answer:

[tex]0.069\ kg[/tex]

Step-by-step explanation:

we know that

1 kg=1,000 g

so

using proportion

Find out how many kilograms are 69 grams

Let

x -----> the weight in kg

[tex]\frac{1}{1,000}\frac{kg}{g} =\frac{x}{69}\frac{kg}{g}\\\\x=\frac{69}{1,000}\\\\x=0.069\ kg[/tex]

69 grams is equal to 0.069 kilograms.

To find how many kilograms 15 crackers weighing 69 grams is, convert 69 grams to kilograms by recognizing that there are 1000 grams in 1 kilogram.

15 crackers weigh 69 grams. To find how many kilograms this is, we need to convert grams to kilograms. There are 1000 grams in 1 kilogram. Therefore, 69 grams is equal to 0.069 kilograms.

Which expression is equivalent to 8-(6r+2)
A
B
C
D

Answers

i think b i’m not sure

Answer:

B

Step-by-step explanation:

find the equation of the line passing through the point (3,1) and (7,-7)

Answers

Y=-2/5x -1 is the answer I believe, if anything check Photomath, that should be the right slope double check the y-intercept by plugging it in with your points provided to u

Answer:y = -2x + 7

Step-by-step explanation:

The equation of a straight line when two points are given is y - y1 = m(x - x1) but m is gradient which is y2 - y1 / x2 - x1

Substitute the points (3 ,1 ) and (7 , -7)

To the gradient equation and solve for the gradient which is m = -2 .Now with the gradient and the first point (3 , 1) solve for the equation

:• y - 1 = -2(x -3 )

y - 1 = -2x +6

. y = -2x + 7

Irma picked 5/8 of a bushel and Matthew picked half as many. How many bushels did Matthew pick?

Answers

0.3125 is the correct answer

ANSWER

[tex] \frac{5}{16} [/tex]

bushels

EXPLANATION

It was given that,

Irma picked

[tex] \frac{5}{8} [/tex]

of a bushel.

If Mathew picked half as many bushels, then Mathew has:

[tex] \frac{1}{2} \times \frac{5}{8} = \frac{5}{16} [/tex]

Hence, Mathew has

[tex] \frac{5}{16} [/tex]

bushels.

HELP ME PLZZZZZZZ!!!!!

Answers

The answer is A because the input is x and the out put is y so that would make it 9.

Ervin scores half as many points in a game as Larry. If Larry scored x points, write an expression to represent how many points Ervin scored.
A) 2x
B) 2 + x
C) x - 2
D) 1
2
x

Answers

Answer:

Step-by-step explanation:

D

Answer:

Option D

Step-by-step explanation:

Larry scored x points

Ervin scores half as many points in a game as Larry

We need to make an expression using the given statement

For larry points we use the variable x.

Half as many points means 1/2 as larry

Ervin = half as larry

Ervin scored [tex]\frac{1}{2}[/tex] of larry

Ervin scored [tex]\frac{1}{2}[/tex] x

Translate the sentence into a inequality


The product of c and 7 is less than or equal to -28?​

Answers

Answer: 7c≤-28  Step-by-step explanation:product of c and 7 is 7c and 7c is less than or equal to -28

The product of c and 7 is less than or equal to -28  is  7c≤-28.

What is the inequality equation? Inequality is a relation that makes a non-equal comparison between two numbers.Mathematical expressions of inequality equation is used most often to compare two numbers on the number line by their size.example :- The product of c and 7 is less than or equal to -28 is 7c≤-28.

What is a linear equation?

A linear equation has one or two variables. No variable in a linear equation is raised to a power greater than 1.

No variable is used as the denominator of a fraction. A linear equation is defined as an equation that is written in the form of ax+by=c. When solving the system of linear equations, we will get the values of the variable, which is called the solution of a linear equation.

solving this we will get the valve of Y if x is given.

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Today, a factory inspector found flaws in 2 out of 16 wooden boxes. If the inspector checks 24 boxes tomorrow, predict how many of the boxes will be flawed.

Answers

Answer:

3

Step-by-step explanation:

The assumed frequency of defects is 2/16.

When we apply this rate to 24, (2/16)*24, we get 3.

Therefore, we can assume around 3 defective boxes tomorrow.

What is the sum of the fractions? Use the number line and equivalent fractions to help find the answer.
-1 1/4 + 1/2

Answers

Answer:

Work:

first you want to change 1/2 so the denominator is a 4

1/2 is equivalent to 2/4

now you have -1 1/4 + 2/4

then you want to get rid of the whole number and make -1 1/4 into a fraction

-1 is -4/4 so add that to the 1/4

now you have -5/4 + 2/4

you can add that now easily and get -3/4

Answer:

-3/4 aka C                                                  hope this helped

The polynomial of degree 3, P(x), has a root of. multiplicity 2 at x=1 and a roof of multiplicity 1 at x= -3. the y- intercept is y= 2.1. Find a formula for P(x)​

Answers

[tex]P(x)[/tex] has degree 3, so it takes the general form

[tex]P(x)=ax^3+bx^2+cx+d[/tex]

It has a root [tex]x=1[/tex] of multiplicity 2, which means [tex](x-1)^2[/tex] divides [tex]P(x)[/tex] exactly, and it has a root of [tex]x=-3[/tex] of multiplicity 1 so that [tex]x+3[/tex] also is a factor. So

[tex]P(x)=a(x-1)^2(x+3)[/tex]

Expanding this gives

[tex]P(x)=a(x^3+x^2-5x+3)=ax^3+ax^2-5ax+3a[/tex]

[tex]\implies\begin{cases}a=b\\-5a=c\\3a=d\end{cases}[/tex]

The [tex]y[/tex]-intercept occurs for [tex]x=0[/tex], for which we have

[tex]P(0)=d=2.1[/tex]

Then

[tex]3a=d\implies a=0.7[/tex]

[tex]a=b\implies b=0.7[/tex]

[tex]-5a=c\implies c=-0.14[/tex]

So we have

[tex]\boxed{P(x)=0.7x^3+0.7x^2-0.14x+2.1}[/tex]

Answer:

4

Step-by-step explanation:

on edge.






Sebastian wanted to order pizzas for $7 each. The delivery charge is $3.50. He has $20.



What is the correct solution for how many pizzas he could order?

Answers

Answer: 2 pizzas with 2.50 left

Step-by-step explanation: First you subtract the 3.50 from the 20, that'll leave you with 16.50 and then from there you subtract 7 from it until you can't anymore

He could order a total of 2 pizzas.Concept of division:

Division is a method of distributing a group of things into equal parts.

According to the given question, we have the following data:

Sebastian has a total of $20.He wanted to order pizzas for $7 each.The delivery charge is $3.50

So, first of all, we have to pay the delivery charge whether we are ordering a single or bulk. That's why we have to deduct that from the total Sebastian has.

$20 - $3.50 = $16.50

So, now Sebastian has $16.50.

Now, each pizza is for $7.

So, it's clear now that, Sebastian has to divide his total amount by the price of each pizza to get how many pizzas he can order.

Number of pizzas Sebastian can order = (Total amount Sebastian has / price of each pizza)

= ($16.50 / $7)

= 2.36

But wait how can he order a fraction of pizzas so we have to take 2 as our answer.

Therefore, Sebastian could order a total of 2 pizzas.

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A package of blank CDs usually costs $8.50. This week it's on sale for 15% off. What's the discount?

A: $.15
B: $.85
C: $1.28
D: $1.34

Answers

Answer:

1.28 is the amount you get off

Step-by-step explanation:

Answer: C: $1.28

Step-by-step explanation: took test

Find the product
( 5/3 )( 2/3 )(21)

A)
1
20

B)
20
3

C)
3
70

D)
70
3

Answers

Answer:

D 70/3

Step-by-step explanation:

5 /3 * 2/3 * 21

10/9 * 21/1

210/9

We can divide by 3 on the top and bottom

70/3

the final product is 70/3, making the correct answer D).

The question asks to find the product of the numbers (5/3), (2/3), and 21. To solve this, we will multiply these numbers step by step.

Multiply the two fractions: (5/3) * (2/3) = 10/9.Now, multiply the result by 21: (10/9) * 21 = 210/9.Simplify the result if possible: 210/9 = 70/3, which cannot be simplified further.

So, the final product is 70/3, making the correct answer D).

Jesse takes his dog and cat fort their annual vet visit.Jesse's dog weighs 23 pounds.The vet tells him his cats's weight is 5/8 as much as his dog's weight.How much does his cat weigh?

help me lol its late

Answers

The cat weighs 14.375 pounds (or 230 ounces even).

Hope this helps!

Write the polar equation as a set of parametric equations.

r=3sinθ
Show all work.

Answers

Answer:

[tex]x=t[/tex]

[tex]y=\pm\sqrt{3t-t^2}[/tex]

Step-by-step explanation:

The given polar equation is;

[tex]r=3\sin \theta[/tex]

We multiply  both sides by r

[tex]r^2=3r\sin \theta[/tex]

The corresponding rectangular equation is

[tex]y^2+x^2=3x[/tex]

[tex]y^2=3x-x^2[/tex]

[tex]y=\sqrt{3x-x^2}[/tex]

Let x=t,

Then;

[tex]y=\pm \sqrt{3t-t^2}[/tex]

which is greater pls help 108.505 108.5? pls help!!

Answers

Answer:

108.505 is greater.

Step-by-step explanation:

It is 5 thousandths bigger.

What are the x-intercepts of the graph of the equation above?

Answers

Answer:

B. (-3, 0) and (-6,0)

Step-by-step explanation:

x intercept when y = 0

so x^2 + 9x + 18 = 0

Factor

(x + 6)(x + 3) = 0

x+6 = 0; x = -6

x+3 = 0; x = -3

Answer

B. (-3, 0) and (-6,0)

Answer: Option B.

Step-by-step explanation:

The graph of the quadratic equation is a parabola.

The parabola intercepts the x-axis when [tex]y=0[/tex].

Then, you need to substitute [tex]y=0[/tex] into the equation:

[tex]y=x^2+9x+18\\0=x^2+9x+18[/tex]

Factor the quadratic equation: find two number that when you add them you get 9 and when you multiply them you get 18. In this case these numbers are 6 and 3. Then:

 [tex]0=(x+6)(x+3)\\\\x_1=-6\\x_2=-3[/tex]

Therefore, the x-intercepts are:

(-3,0) and (-6,0)

What kind of shape is this?

Convex nonagon

Concave octagon

Concave nonagon

Concave decagon

Answers

the answer is a concave decagon

Answer:

I believe this is a "Concave Decagon."

Step-by-step explanation:

A Decagon consists of 10 sides. This abstract shape has 10 sides, so this shape is a Decagon.

Hope this helps! :)

Solve the inequality n/-3 + 8 > 6.

Answers

Answer:

n < 6

Step-by-step explanation:

n/-3 + 8 > 6

Subtract 8 from each side

n/-3 + 8 -8> 6-8

n/-3 > -2

Multiply each side by -3 to isolate n.  Remember to flip the inequality since we are multiplying by a negative

n/-3 * -3 < -2 *-3

n < 6

What is the diameter of a circle with a circumference of 6π?

Answers

Answer:

the diameter, d, must be 6

Step-by-step explanation:

Formula for circumference of a circle with diameter d is C = πd.  

If C = 6π = πd, then the diameter, d, must be 6.

The circle given by : x^2 + y^2 - 6y - 12 = 0 can be written as:
x^2 + (y - k)^2 = 21.
What is the value of k in this equation?

Answers

Step-by-step explanation:

Given equation of circle is,

[tex] {x}^{2} + {y}^{2} - 6y - 12 = 0 \\ by \: compairing \: it \: with \: \\ {x}^{2} + {y}^{2} + 2gx + 2fy = 0 \: we \: get \\2 g = 0 \: or \: g = 0 \\ 2f= - 6 \\ or \: f= - 3 \\ c = - 12[/tex]

again the another form of circle is,

[tex] {x}^{2} + {(y - k)}^{2} = 21 \\ or \: {x}^{2} + {y}^{2} - 2ky + {k}^{2} - 21 = 0 \\ by \: compairing \:it \: with \: \\ {x}^{2} + {y}^{2} + 2gx + 2fy = 0 \: we \: get \\ g = 0 \\f = - k \\ c = {k}^{2} - 21[/tex]

now equating the values of f in both equations,

-k=-3

i.e. k=3

therefore k=3

What are all the triangles in geometry? And the angles too

Answers

Equilateral triangle: all sides are equal lengths, all angles are equal too

Scalene triangle: has three different sides, all angles are different

Isosceles triangle: 2 sides are equal, one isn’t, 2 angles are the same, one is different

Acute triangle: angles are less than 90 degrees

Obtuse triangle: angles are larger than 90 degrees

Right triangle: angle forms a 90 degree angle

Those are the triangles :)

Final answer:

There are different types of triangles in geometry, including equilateral, isosceles, and scalene triangles. The sum of angles in a triangle is always 180 degrees.

Explanation:

In geometry, there are several types of triangles, including:

Equilateral triangle: All three sides are equal in length, and all three angles are equal to 60 degrees.Isosceles triangle: Two sides are equal in length, and two of the angles are also equal.Scalene triangle: All three sides have different lengths, and all three angles are different.Right triangle: One angle is a right angle (90 degrees).

As for the sum of angles in a triangle, it is always 180 degrees. This is known as the Triangle Angle Sum Theorem

What is greatest value of the data represented by the box plot?

Answers

45, it is the highest number in the range

i don't need it but brainliest it is appreciated

Solve for h
Someone please help out

Answers

Answer:

[tex]\boxed{h=\frac{6}{b}}[/tex]

Step-by-step explanation:

Solving for [tex]h[/tex] is the same as isolating it. In this problem, we have the following equation:

[tex]6=bh[/tex]

So we need to do the following steps:

Step 1: Interchange the order of the equation:

[tex]bh=6[/tex]

Step 2: Divide the whole equation by [tex]b[/tex]:

[tex]\frac{1}{b}bh=\frac{1}{b}6[/tex]

Step 3: Simplify

[tex]h=\frac{6}{b}[/tex]

Finally, this h is in term of b and is:

[tex]\boxed{h=\frac{6}{b}}[/tex]

A new car is purchased for 23700 dollars.the value o the car depreciates at 13.5% per year what will be the value of the car be,to the nearest cent,after 10 years

Answers

it will be 31,995 but we have to estimate yo the nearest cent so 10 cents

Allison is closing on a house on september 17. The buyer owns the property on the day of the closing. The selling price of the gone is $200,500. Allison was accepted for a 25-year fixed-rate mortgage for $185,000 at 6.25% interest. The seller has paid $2,560.43 in property taxes for the coming year. How much will Allison owe in prorated taxes and interest.

Answers

Answer:

197,500

Step-by-step explanation:

200500*25-184000/6.25-2560.43=4980499.57 Which rounds to 197,500.

Allison owes approximately $1,380.50 in prorated taxes and interest for the property she's closing on September 17.

To calculate the prorated taxes and interest that Allison owes, we need to break down the calculation into two parts: prorated property taxes and prorated interest.

1. **Prorated Property Taxes:**

  - Allison is closing on September 17, which means she will own the property for 106 days of the year (September 17 to December 31).

  - The seller has already paid $2,560.43 in property taxes for the entire year.

  - To calculate Allison's portion of the property taxes, we need to divide the seller's payment by the number of days in the year and then multiply by the number of days Allison will own the property.

Prorated Property Taxes = Seller's Property Tax Payment/

Days in Year × Days Allison Owns the Property

 [tex]\[ \text{Prorated Property Taxes} = \frac{2,560.43}{365} \times 106 \][/tex]

 [tex]\[ \text{Prorated Property Taxes} = \frac{2,560.43}{365} \times 106 = 741.12 \][/tex]

2. **Prorated Interest:**

  - Allison is taking out a 25-year fixed-rate mortgage for $185,000 at 6.25% interest.

  - To calculate the prorated interest, we need to find out how much interest Allison will owe for the remaining days of September.

 Daily Interest Rate [tex]$=\frac{\text { Annual Interest Rate }}{\text { Days in Year }}=\frac{6.25 \%}{365}$[/tex]

  Prorated Interest for September = [tex]Loan Amount $\times$ Daily Interest Rate $\times$ Number of Days in September[/tex]

  [tex]\[ \text{Prorated Interest for September} = 185,000 \times \frac{6.25\%}{365} \times 14 \][/tex]

 [tex]\[ \text{Prorated Interest for September} \approx 639.38 \][/tex]

Now, let's add up the prorated property taxes and prorated interest:

[tex]\[\text{Total Prorated Taxes and Interest} = \text{Prorated Property Taxes} + \text{Prorated Interest for September}\][/tex]

[tex]\[\text{Total Prorated Taxes and Interest} = 741.12 + 639.38\][/tex]

[tex]\[\text{Total Prorated Taxes and Interest} = 1380.50\][/tex]

So, Allison will owe approximately $1,380.50 in prorated taxes and interest.

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