simplify the following
[tex]( \frac{1}{a} - \frac{1}{b}) {}^{ - 1} [/tex]

Answers

Answer 1

Answer:

Step-by-step explanation:

[tex]\frac{1}{a}-\frac{1}{b} =\frac{1*b}{a*b}-\frac{1*a}{b*a}\\\\=\frac{b}{ab}-\frac{a}{ab}\\\\=\frac{b-a}{ab}\\\\\\(\frac{1}{a}-\frac{1}{b})^{-1} = (\frac{b-a}{ab})*{-1}\\\\=\frac{ab}{b-a}[/tex]


Related Questions

What value of x makes the equation − 1 3 x + 6 = − 6 + 2 3 x true?

Answers

Answer:

4

Step-by-step explanation:

what is a triangle with a 90 degree angle

Answers

Step-by-step explanation:

It's a right angled triangle.

PLEASE HELP!
Find the sum of 12.4 and 372.6 using the correct number of significant digits.


A. 385

B. 385.0

C. 3850

D. 3850.0

Answers

Answer:

the answer is A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

12.4+372.6=385

PLEASE HELP ME
180=3x+45​

Answers

Answer:

3x=180-45

3×=135

3x/3x=135/3x

=45x

The graphs of linear functions f and g are shown on the grid below.



Which function is best represented by the graph of g?

Answers

Answer: g(x)=3f(x)

Step-by-step explanation:

So we know it isnt a translation. Which eliminates the first 2 answer choices. So its between the last 2. If it were 1/3 the grap would have been steeper.

I hope this helps!

Angel and Jayden were at track practice. The track is 2/5 kilometers around.




Angel ran 1 lap in 2 minutes.

Jayden ran 3 laps in 5 minutes.
How many minutes does it take Angel to run one kilometer?

I WILL MARK BRAINLIST

Answers

Answer:

5 minutes

Step-by-step explanation:

2 minutes per lap

2 minutes for 2/5 km = 1 minute for 1/5 lap

1 x 5/5 = 5 minutes

Carla paid $129 plus 6% sales tax for a guitar. What
was the total cost of the guitar? PLEASE SHOW WORK!

Answers

Answer:

136.74

Step-by-step explanation:

6 percent of $129 is $7.74

129 plus 7.74 = 136.74

#1 use the pythagorean theorem to find the missing side of each right triangle

Answers

Answer:

Step-by-step explanation:

1-13

2-8

I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

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

Step-by-step explanation:

F(x) is a transformation from h(x).

So our starting equation is

[tex] - (x - 1) {}^{2} - 1[/tex]

F(x) is also facing the same direction h(x) is so we dont have to reflect nothing across the x or y axis.

There isn't a vertical or horizontal stretch, compressions.

There isn't a horizontal shift as the x values stay in the same place.

There is a vertical shift. We can simply move h(x) up 6 units to get to f(x).

So our equation looks like.

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

Evaluate the expression below for m = 350.
3.5m

Answers

Answer: 1225

Step-by-step explanation:

Just plug in 350 for 'm':

3.5m

3.5m (350)

^^^^^^^^^^

times these two together, to get your final answer!

Multiply:

1225

The sales tax rate in Connecticut is 6.35%. Megan wants to buy a jacket with a $45.00 price tag. She has a gift card to the store she wants to use. What amount needs to be on the gift card for Megan to be able to buy the jacket using only the gift card?

Answers

Answer:

$47.86

Step-by-step explanation:

A tax is a compulsory amount levied by the government or an agency of the government on goods and services

Taxes increases the price of goods and services. Thus, the amount paid would increase by the tax rate

Amount that needs to be on the gift card = amount of tax + price of the jacket

Price of the jacket = $45

Amount of tax = percentage tax rate x price of the jacket

0.0635 x $45 = $2.86

$45 + $2.86 = $47.86

please I need help I will give brainliest ​

Answers

Answer:

The two triangles are congruent, or equal to each other.

Step-by-step explanation:

In order to solve this question, you first need to compare the measurements. Since AB and PQ both equal 4 cm, you know that they are congruent. Since BC and QR are also congruent, you know that the last two have to be congruent as well. Therefore, the triangles ABC and PQR are congruent, or equal, to each other.

How many cubic meters of material are there in conical pile of dirt that has radius 9 meters and height 6 meters?Use 3.14 for pi

Answers

Answer:

V = 226.08 m³

Step-by-step explanation:

The formula for the volume of a cone of base radius r and height h is

V = (1/3)(πr²)(h).

In this case, r = 6 m and h = 6 m.  Thus, the volume of this conical pile is

V = (1/3)(3.14)(6 m)²(6 m), or

V = 226.08 m³

-7b - 4(b + 7) = -3b - 4(b-2)

Answers

Answer:

b = -9

Step-by-step explanation:

-7b - 4(b + 7) = -3b - 4(b -2)

First we want to distribute the coefficients across the parentheses. To do so, we multiply the coefficient by every term within the parentheses.

-7b - 4(b + 7) = -3b - 4(b - 2)

-4 • b = -4b

-4 • 7 = -28

-4 • b = -4b

-4  • -2 = 8

Simplify the expression with these new values.

-7b - 4b - 28 = -3b - 4b + 8

Now we want to combine the like terms. First combine the variables.

-7b - 4b - 28 = -3b - 4b + 8

-11b - 28 = -7b + 8

Combine further by adding 7b to both sides.

-4b - 28 = 8

Combine the constants by adding 28 to both sides.

-4b = 36

Isolate b by dividing both sides by -4.

b = -9

This is your answer.

Check your answer by plugging b = -9 back into the original equation.

-7b - 4(b + 7) = -3b - 4(b - 2)

-7(-9) - 4(-9 + 7) = -3(-9) - 4((-9) - 2)

63 - 4(-2) = 27 - 4(-11)

63 + 8 = 27 + 44

71 = 71

Your answer is correct.

Hope this helps!

Answer:

-9 is the required answer of b

Step-by-step explanation:

-7b - 4(b + 7) = -3b - 4(b-2)

open bracket

-7b-4b-28=-3b-4b+8

-11b-28=-7b+8

-11b+7b=28+8

-4b=36

b=36/-4=-9

(2,4) and (1,0). find the slope of each line the contains the given pair points

Answers

Answer:

4

Step-by-step explanation:

Formula to find slope: y - y1 / x - x1

0 - 4 ÷ 1 - 2

-4 ÷ -1

Slope = 4

Answer:

slope = 4

Step-by-step explanation:

y2-y1/x2-x1

0-4/1-2 = 4

You have to type up a 400 word paper. If you can type 25
words in 3 minutes, how long will it take you to type the
paper?

Answers

Answer:

48 minutes

Step-by-step explanation:

25=3 400/25=16x3=48

Answer:

48 minutes

Step-by-step explanation:

25 words - 3 minutes

400 words - x minutes

Cross multiply

25x = 400 x 3

25x = 1200

Divide both sides by 25

x = 1200/25

x = 48

pls help!! brainliest if correct, 50 points awarded! look at the image! :)
thanks!

Answers

Answer: B and E

Step-by-step explanation:

Answer:

B C and E

Step-by-step explanation:

have a great day :D

A local frame shop charges $5 per foot for the wood to make a frame. You want to have an 8 inch by 10 inch picture frame. How much will it cost?

Answers

Answer:15$

Step-by-step explanation:

please help me with question 1 and 2.

Answers

Answer:

1 cone

Step-by-step explanation:

2. rectangular prism

Answer:

the first one is a cone

Step-by-step explanation:

the second one is a rectangular prism

what percent of 41 is 27.9

Answers

Answer:

68.048780487805

Step-by-step explanation:

or just 68.04 or just 68

Amber ran a 25 kilometer road race in 3 hours. She ran at the same speed and covered the same distance each hour. Draw a visual model to find the distance Amber ran each hour. Between which two whole numbers does the she ran each our lie

Answers

Answer:

Amber ran 8,333 kilometers during each hour, and the equation to determine that amount is 25/3 = X.

Step-by-step explanation:

Given that Amber ran a 25 kilometer road race in 3 hours, and she ran at the same speed and covered the same distance each hour, to draw a visual model to find the distance Amber ran each hour the following calculation must be performed:

25/3 = X

8.333 = X

So Amber ran 8,333 kilometers during each hour, and the equation to determine that amount is 25/3 = X.

Janice and her cousin Linda are a little competitive about the relative merits of their home towns. One contest they had was to determine who had more rainy days. They found weather records on the internet and each of them randomly selected 60 days from the past 5 years. Janice found that there had been measurable rainfall on 17 of the 60 days she selected for Asheville, and Linda found that there had been measurable rainfall on 12 of the 60 days she selected for Lincoln. They intend to perform a test of significance on their data, using the hypotheses When calculating the test statistic, what expression would they use to estimate the standard deviation of the sampling distribution of the difference in proportions,

Answers

Answer:

Following are the equation to this question:

Step-by-step explanation:

[tex]\to \frac{\sqrt{(.24)(.76)}}{60} + \frac{(.24)(.76)}{60}\\\\\to \frac{\sqrt{0.1824}}{60} + \frac{0.1824}{60}\\\\\to \frac{0.42708313}{60} + \frac{0.1824}{60}\\\\\to \frac{0.42708313+0.1824}{60} \\\\\to \frac{0.60948313}{60} \\\\\to 0.0101580522[/tex]

Please Hurry !!

The speed s (in miles per hour of a car driving on wet asphalt can be given by s = 3 square root d, where d is the stopping distance (in feet). What is the approximate stopping distance of a car traveling 80 miles per hour? Round your answer to the nearest hundredth.

Answers

Answer:

d = 711 miles

Step-by-step explanation:

The speed s of the car is given by :

[tex]s=3\sqrt{d}[/tex] ...(1)

Where

d is the stopping distance

We need to find the stopping distance of a car travelling at 80 mph.

Rearranging equation (1) for d.

[tex]s^2=9d\\\\d=\dfrac{s^2}{9}\\\\d=\dfrac{80^2}{9}\\\\d=711.1\ miles[/tex]

or

d = 711 miles

So, the required stopping distance is 711 miles.

1+1
Please help this is worth 80% of my grade

Answers

Answer:

2

Step-by-step explanation:

Answer:

2.

Step-by-step explanation:

So you take your numbers, 1 and 1.

You add them together 1+1.

You have your answer, 2.

What's the answer????!!!???

Answers

Answer:

3997

Step-by-step explanation:

JUST SEARCH IT UP0202000202×0]2]×

divide R300 in the ratio of 1:2:3​

Answers

Answer:

50:100:150

Step-by-step explanation:

300 / 1+2+3

300/6 = 50

50:50x2:50x3

50:100:150

Evan and Dorinda make bracelets for a craft fair. Evan makes 10 bracelets the first day and 8 bracelets each day after that. Dorinda makes 8 bracelets the first day and 8 bracelets each day after that. If they make bracelets for 6 days, how many bracelets will they make in all? a. 567 b. 987653 c. 8765 d.65

Answers

Answer:

98 bracelets

Step-by-step explanation:

Number of days, n = 6

Evan:

= 10 + 8(n - 1)

= 10 + 8(6 - 1)

= 10 + 8(5)

= 10 + 40

= 50 bracelets

Dorinda

= 8n

= 8(6)

= 48 bracelets

Total bracelets they will make in all = Evan + Dorinda

= 50 + 48

= 98 bracelets

Find the value of x. Round to the nearest whole number.

Answers

Answer:

A. 61 degrees

Step-by-step explanation:

tan x = 9/5

[tex]tan^{-1} x=1.8[/tex]

x≈60.9

What is the approximate volume of the cylinder? Use 3.14 for it.​

Answers

Answer:

226.08 cm^3 since volume

Step-by-step explanation:

Answer:

452.39

Step-by-step explanation:

The formula for volume is V=πr2h so you would add your numbers in and multiply (V=πr2h=π·42·9≈452.38934)


The value of x is_____and the value of y is ___.

Answers

Answer:

x=60 y=50

Step-by-step explanation:

60+y=110

y=50

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