What is the value of A when we rewrite
(1/7)^x-2 - (1/7) ^x as A x (1/7)^x

Answers

Answer 1

Answer:

48

Step-by-step explanation:

Khan Academy

Answer 2

The value of [A] will be 48.

What is Equation Modelling?

Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.

Given is that we have rewritten -

(1/7)ˣ ⁻ ² - (1/7)ˣ  as  [A] x (1/7)ˣ

We have (1/7)ˣ ⁻ ² - (1/7)ˣ  rewritten as [A] x (1/7)ˣ. So, we can write -

(1/7)ˣ ⁻ ² - (1/7)ˣ = [A] x (1/7)ˣ.

Now, we can write [(1/7)ˣ ⁻ ² - (1/7)ˣ] as :

[(1/7)ˣ / (1/7)²] - (1/7)ˣ

(1/7)ˣ [1/(1/7)² - 1]

We have -

(1/7)ˣ ⁻ ² - (1/7)ˣ = [A] x (1/7)ˣ.

So, we can write -

(1/7)ˣ × [1/(1/7)² - 1] =  [A] × (1/7)ˣ.

On comparing, we  get -

[A] = [1/(1/7)² - 1]

[A] = 48

Therefore, the value of [A] will be 48.

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Related Questions

In a lab experiment, 5300 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 10 hours. How many bacteria would there be after 12 hours, to the nearest whole number?


Answers

Answer:

12,720

Step-by-step explanation:

5300 times 2.4 = 12,720

At a strawberry stand Luisa paid $4.50 for 2 pounds of strawberries. How much would you expect to pay for five pounds or strawberry?

Answers

Half of 4.50 is 2.25, so for one pound it would be $2.25.

To calculate five pounds, you need to add 2.25+2.25+2.25+2.25+2.25 = 11.25.

For five pounds of strawberry's, it would cost $11.25.

Hope this helped !

The answer would be 11.25

I NEED HELP PLZZ :((

5/2 ÷ 3/4
pls help me solve this

Answers

Answer:

3 1/3 Because When we divide two fractions, such as 5/2 ÷ 3/4, we flip the second fraction and then we simply multiply the numerators with each other and the denominator with each other.

Step-by-step explanation:

remember to simplify if ever possible!:D

soooo

in order to do this both fractions has to have the same denominator

so you find the CMD (common denominator)

which is 4

so you'd only change 5/2

5/2 * 2/2 to make it 10/4

now both fractions have the same denominator

you do keep change flip

you keep 10/4

change division to multiplication

and flip 3/4 TO 4/3

which would equal

10/4 * 4/3= 40/12

40/12

and you divide it with long division

you get 3 as ur quotient

divisor as 12

and remainder as 4

= 3 4/12

nd u simplify which u divide 4/12 by 4 and get 1/3

so the answer would be 3 1/3

and in order to check you can use an online fraction calculator

When labeling a pre-image and it's image, we use a small tick mark. It's called a(n):
1. rule
2. tic tok
3. prime
4. quotation

Answers

Answer:

Prime

Step-by-step explanation:

If we have a point on a pre-image, we can have it labelled as A(x,y)

Now, we can write this as the image

To write this as the image, we simply have to add a mark on the A

This mark is at the upper right

We have it as A’ (x,y)

The part added is called a prime

Answer:

It’s a prime

Step-by-step explanation:

Levi went to GamePlay to trade in his old games. GamePlay will pay him $4.99 per game he trades in. If Levi trades in 5 games and wants to purchase a new game for $59.99, how much will he have to pay? Write your answer as a decimal to two places.

Answers

Answer:

He will have to pay  $35.04

Step-by-step explanation:

4.99 x 5 = 24.95

59.99 - 24.95 = 35.04

find the volume and the total surface area of a cuboide whose dimension 2m, 80cm and 60cm​

Answers

Answer:

Volume= 0.96m^3

TSA= 6.56m^2

Step-by-step explanation:

Given data

Length = 2m

Width= 80cm= 0.8m

Height= 60cm= 0.6m

Volume= L*W*H

Volume= 2*0.8*0.6

Volume= 0.96m^3

TSA=2lw+2lh+2hw

TSA= 2*2*0.8+2*2*0.6+2*0.6*0.8

TSA=  3.2+ 2.4+ 0.96

TSA= 6.56m^2

Katrina received a raise in pay from $14.00 per hour to $15.10 per hour. What is her percent increase in pay per hour?
Type your answer using the % key. Round to the nearest whole percentage if necessary.

Answers

Answer:

8%

Step-by-step explanation:

(New - original) / original x 100

($15.10 - $14)/ $14 x 100 = 7.85 %

7.85% to the nearest whole percentage is 8%

PLEASE HELO FAST I HAVE TO SUBMIT SOON

Answers

Answer:

113.4 = x(18)

x = 6.3

Step-by-step explanation:

Wouldn’t you subtract 18 from 113.4 to get your answer?

PLEASE HELP WHATS THE ANSWER

Answers

Answer:

2,744

Step-by-step explanation:

[tex]C = 400 \sqrt[3]{n} + 200 \\ \\ plug \: C =5800 \\ \\ 5800 = 400 \sqrt[3]{n} + 200 \\ \\ 5800 - 200 = 400 \sqrt[3]{n} \\ \\ 5600 = 400 \sqrt[3]{n} \\ \\ \frac{5600}{400} = \sqrt[3]{n} \\ \\ 14 = \sqrt[3]{n} \\ \\ {(14) }^{3} = {(\sqrt[3]{n})}^{3} \\ (cubing\: both\: sides) \\\\ 2,744 = n \\ \\ n = 2,744[/tex]

4x + 5 + 3x – 12 =


A.9x-9

B.7x+7

C.7x-7


Answers

Answer:

7x - 7

Step-by-step explanation:

In this equation you are going to add like terms.

The like terms you have are the terms with x and then the terms without the x.

So 4x + 3x = 7x

5 - 12 = -7

So your answer is 7x-7

How many solutions does the equation 3x - 7 = 4 + 6 + 4x have?
OTwo
O Zero
O Infinitely many
O One

Answers

Answer:

one

Step-by-step explanation:

3x-7=4+6+4x

3x=7+4+6+4x

3x=17+4x

3x-4x=17

-x=17

x=-17

hello please help me, i’m stuck on this one :(

Answers

Answer:

The second option, B.

[tex](x| -3< x \leq 2)[/tex]

Explanation:

Since the point on -3 is hollow, this means that -3 is not included in the equation. Therefore, -3 < x. Since the point on 2 is filled, this means that 2 is a valid number that is included in the equation. Therefore, [tex]x\leq 2[/tex].

Solve for the variable
7x = -35

Answers

Answer:

x = -35/7

= -5

Answer:

x = -5.

Step-by-step explanation:

7x = - 35

x = -35/7

x = -5.

1.
Which relationship shows y as a function of x?
A. {(-3, 8), (-8, -1), (5, -7), (-8, -8)
B. {(3,-2), (-3, 7), (-7, 0), (1, 2)}
C. {(0, 3), (9, -8), (0, 8), (-6, -5)}
D. {(1, 0), (1, 5), (-4, 5), (-8, 0)}

Answers

I think B is the answer

ANSWER THESE TWO QUESTIONS CORRECTLY TO BE MARKED BRAINILEST

Answers

Answer:

In this example, if you buy an item at $18.99 with 25% discount, you will pay 18.99 - 4.7475 = 14.24 dollars.

Step-by-step explanation:

since I cant motivate myself to do my work and stop procrastinating.....can someone motivate me?:/​

Answers

Answer:

take a time lapse video of yourself doing your homework on your phone! this way you won't be able to use your phone bc it will be doing the timelapse, and then after you finish you'll be able to go back and watch it :)

Step-by-step explanation:

Answer:

Make up a random doodle and name it bob.....YOU CAN DO THIS

Step-by-step explanation:

Rudy has 8 yards of twine. If he cuts the twine into equal pieces of 3/4 feet each, how many pieces can he cut?

Answers

3 feet = 1yard. 8 yard = 24 feet. 3/4*24 = 18

Work out the volume of the cone give the answer to 3 significant figures plz help

Answers

Answer:

i think the answer is 1010

Step-by-step explanation:

1/3 × 3.142 × 8^2 × 15

Brittany is making cookies. Her recipe calls for 2 1/2 cups of flour and 2/3 cups of sugar how much more flour does she need than sugar

Answers

Britanny will need 5/6 more flour than sugar

She needs 1 5/6 more cup(s) of flour than sugar ! Or , 11/6 more cup(s) of flour than sugar!

-Vamp :-)

Please help I'm really bad at math. I will mark you brainliest if you get the answer right.

Answers

Answer:

A & D

Step-by-step explanation:

A. 9(3x-1) = 27x-9 ✔

B. 27x-1(9) = 243x-9 ❌

C. 27(x-9) = 27x-243 ❌

D. 3x-1(9) = 27x-9 ✔

E. 9(27x-1) = 243x-9 ❌

F. x-9(27) = 27x-243 ❌

question is in the pic

Answers

Answer:

I would say A.

Step-by-step explanation:

Both of the bakeries' data does seem symmetric, so use the mean.

Hope it is correct!

Answer:

Prolly A

Step-by-step explanation:

so sorry if I'm wrong hope I'm right

a population of 100,000 decreases by 6% each year. write a graph to explain that

Answers

Answer:

Step-by-step explanation:

Your graph equation is going to be y = 100,000 - .06x

So basically the graph is easy to explain it is 3.45 by T

Dawn is ordering 1 veggie sandwich for every 3 ham sandwiches. She needs 12 sandwiches in all. Veggie sandwiches cost 4.00 dollars each and ham sandwiches cost 4.50 each. How many will dawn spend on sandwiches?

Answers

Answer:

$52.50

Step-by-step explanation:

Lets use V for Veggie, and H for Ham.

V=4

H=4.50

She is getting 12 sandwiches, and Every 3 H, she buys one V.

So, the order of her buying the sandwiches would be:

H H H V H H H V H H H V

9 H and 3 V

9*H=40.5

3*V=12

40.5+12= $52.50

The total cost of all the sandwiches is given by the equation A = $ 52.50

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the total cost of 12 sandwiches be A

Now , the equation will be

For every 1 veggie sandwich 3 ham sandwiches are ordered by Dawn

The cost of veggie sandwich = $ 4.00

The cost of ham sandwich = $ 4.50

So ,

Let the veggie sandwich be = x

Let the ham sandwich be = y

The total number of sandwiches = 12

So , x + 3y = 12

when x = 3 and y = 3

3 + 3 ( 3 ) = 12

3 + 9 = 12

12 = 12

Therefore , the number of veggie sandwich = 3

The number of ham sandwich = 9

And , the cost of 3 veggie sandwich = 3 x 4.00

The cost of 3 veggie sandwich = $ 12

The cost of 9 ham sandwich is = 9 x $ 4.50

The cost of 9 ham sandwich is = $ 40.5

The total cost of 12 sandwich A = cost of 3 veggie sandwich + cost of 9 ham sandwich

Substituting the values in the equation , we get

The total cost of 12 sandwich A = 12 + 40.50

The total cost of 12 sandwich A = $ 52.50

Therefore , the value of A is $ 52.50

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Please I don’t understand I need help thank you

Answers

Answer:

Step-by-step explanation:

Which of the following equations have no solutions?
Choose all answers that apply:
A
152 - 45 = 750 + 75
B.
15% - 45 = 15x + 75
c
45x – 45 = -15% + 75
D
-450 – 45 = -75x + 75

Answers

Answer: B

Step-by-step explanation:

Equation A:

15x - 45 = 75x + 75

=> -120 = 60x

=> x = -2

Equation B:

15x - 45 = 15x + 75

=> 0 = 15

No Solutions

Equation C:

45x - 45 = -15x + 75

=> 60x = 120

=> x = 2

Equation D:

-45x - 45 = -75x + 75

=> 30x = 120

=> x = 4

Muumuu u u unununinjn u u u) ha u he h u u when) why she 123 uu

Can someone help ? I dont understand this

Answers

Answer:

4854

Step-by-step explanation:

2=434344=3

[46664792)

Answer:

31°

Step-by-step explanation:

The angle 59° will be equal to the angle c in triangle ABC.

Angle B will be 90°

Angle A + Angle B + Angle C = 180° (ASP)

Angle A + 90° + 59 ° = 180 °

Angle A = 180° - 90° - 59°

Angle A = 31°

Angle A = x

31° = x

if john weighs 8lbs less than twice his sister's weight, what is the difference between their weight if john weighs 180 lbs?

Answers

Answer:

86 is the difference

Step-by-step explanation:

180 + 8 = 188

188 / 2 = 94

188 - 94 = 86

Answer:

The difference between their two weights is 86 lbs

x•2-8=180 (x= sister weight)

180+8=188

188÷2= 94 (x=94)

189-94= 86

What is the exact volume of the cone? with a 5 ft radius and a 16 ft height

Answers

Answer:

The volume is 418.93 ft^3

Step-by-step explanation:

Here, we want to find the volume of a cone

Mathematically, we use the formula;

V = 1/3 * pi * r^2 * h

r = 5 ft

h = 16 ft

Substituting these values;

V = 1/3 * 3.142 * 5^2 * 16

V = 418.93 ft^3

please help me !!

Line q goes through points (-3, 3) and (-5, -3). At what point does line q cross the y-axis?

Answers

Answer:

(0, 12 )

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

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

with (x₁, y₁ ) = (- 3, 3) and (x₂, y₂ ) = (- 5, - 3)

m = [tex]\frac{-3-3}{-5+3}[/tex] = [tex]\frac{-6}{-2}[/tex] = 3 , then

y = 3x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 3, 3 ), then

3 = - 9 + c ⇒ c = 3 + 9 = 12 ← y- intercept

Thus the line crosses the y- axis at (0, 12 )

Answer:

It crosses the y-axis at the point where y = 12

- the point (0, 12).

Step-by-step explanation:

First we need to find the equation of the line q:

The slope of the line = (-3-3)/(-5-(-3))

= -6/-2

= 3.

Using the point-slope form of a line:

y - y1 = m(x - x1)         Take the point (-3, 3):

y - 3 = 3(x -(-3)

y - 3 = 3x + 9

y = 3x + 12.

Where q crosses the y-axis x = 0 so we have

y = 3(0) + 12

y = 12

The required point is (0, 12).

What has more volume? Shoe box, dog, airplane, or desk.

Answers

Answer:

Airplane

Step-by-step explanation:

Answer:

Airplane

Step-by-step explanation:

Volume is the amount of mass an object has. Using common sense you can easily identify an airplane as the largest,

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