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Semmy [17]
3 years ago
13

What is the common denominator of 1/a+1/b in the complex fraction ((1/a-1/b)/(1/a+1/b)? A^2b^2 a-b a+b ab

Mathematics
1 answer:
S_A_V [24]3 years ago
7 0

Answer:

  • D. ab

Step-by-step explanation:

  • 1/a + 1/b =
  • b / ab + a / ab =
  • (b + a) / ab

The common denominator is ab

Correct choice is D

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Two hot air balloons are traveling along the same path away from a town,
emmainna [20.7K]

Answer:

Henry's balloon was farther from the town at the beginning and Henry's balloon traveled more quickly.

Step-by-step explanation:

The distance of Tasha's balloon from the town is represented by the function y = 8x+ 20 ............. (1)

Where y is the distance in miles from the town and x represents the time of fly in hours.

So, at the start of the journey i.e. at x = 0, y = 20 miles {From equation (1)} from the town.

Again, Tasha's balloon is traveling at a rate of 8 miles per hour.

Now, Henry's balloon begins 30 miles from the town and is 48 miles from the town after 2 hours.

So, Henry's balloon traveling with the speed of  miles per hour.

Therefore, Henry's balloon was farther from the town at the beginning i.e. 30 miles from the town. And Henry's balloon traveled more quickly i.e at the rate of 9 miles per hour. (Answer)

4 0
3 years ago
Solve for E: <br> E=〖mc〗^2<br> m = 3<br> c = 6
rewona [7]

Answer:

E  =  324

Step by step explanation:

4 0
2 years ago
Read 2 more answers
the lengths of the sides of a triangle are shown. 8.73, 12.4, and 10.075. what is the perimeter of the triangle
ElenaW [278]

Answer:

  31.205

Step-by-step explanation:

The perimeter is the sum of the side lengths:

  8.73 +12.4 +10.075 = 31.205

_____

If you're after an answer that has the appropriate precision (assuming these are measured values), that would be one that is rounded to 1 decimal place: 31.2.

7 0
2 years ago
Your paint 1/3 of a wall in 1/4 hour. at this rate, how long will it take to paint one wall
Irina-Kira [14]

1/4 hour is the same as 15 minutes. If it takes 15 minutes to paint 1/3, then it would take 45 minutes to paint the whole wall.

8 0
2 years ago
n Juanita's Art History class Quizzes are worth 15% of the final grade, Exams are worth 55%, Projects are worth 25%, and Attenda
kvv77 [185]

Answer:

90.75%

Step-by-step explanation:

Given;

Of the total final score;

Quizzes = 15%

Exam = 55%

Project = 25%

Attendance = 5%

Resolving the values of each section of the total score;

she had perfect attendance to class. 100% attendance;

Attendance = 5% of total score

She got extra credit on her project with a score of 26 out of 25 possible points.

Project = 26/25 × 25% = 26%

80, 85, and 96 on the first three exams,each worth 100 points;

Total exam score = 80+85+96 = 261 out of 300

Of the total score;

Exam = 261/300 × 55% = 47.85%

At mid-semester Juanita scored 119 out of 150 points on quizzes.

Quizzes = 119/150 × 15% = 11.9%

Total exam score is;

= Quizzes+exam +project+attendance

= 11.9% + 47.85% + 26% + 5%

= 90.75%

3 0
2 years ago
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