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fenix001 [56]
3 years ago
5

1 over f equals 1 over a plus 1 over b for f

Mathematics
1 answer:
ANTONII [103]3 years ago
3 0
 
            1
           ---- + 1 
 1         a       
---- = ------------
  f         1
           ----
             b

You did well in presenting the problem with your "over this and that" approach.  However, you didn't explain in words that your task was to solve this for f.

To solve for f, take the entire (1/f) fraction above and invert it:

       1/b
f = -------------
      (1/a) + 1

This could be simplified; the LCD is ab.  Give that a try.

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How many different committees can be formed from 12 teachers Abs 43 students of the committee consists of 4 teachers and 3 stude
Marina86 [1]

Answer:

6108795

Step-by-step explanation:

To obtain the number of ways the committee can be selected :

4 teachers from the 12 teachers available and 3 students from the 43 students available

Using combinatorics :

12C4 * 43C3

recall :

nCr = n! ÷ (n - r)!r!

Using calculator :

12C4 = 495

43C3 = 12341

12C4 * 43C3

495 * 12341

= 6108795

3 0
2 years ago
find two consecutive odd numbers such that the sum of the larger number and twice the smaller number is 27 less than four times
Vlad1618 [11]

Answer:

DANG some of these questions are from like 2017 and still havent been answerd

Step-by-step explanation:

7 0
3 years ago
Solve 80% of x = 100 or 0.8x = 100
suter [353]

Answer:

125

Step-by-step explanation:

divide both sides of the equation by 0.8

0.8÷0.8=0.8÷100

any expression divided by 1 is itself

x=100÷0.8

divide the numbers

100÷0.8=125

125 is your answer

7 0
3 years ago
A piece of tile is 4 1/2 inches long and 3 1/4 inches wide. What is the area of the tile? A.7 3/4 B.12 C.12 1/8 D.14 5/8
Komok [63]

4 x 2 over 2

8/2 + 1/2 = 9/2

3 x 4 over 4

12/4 +1/4 = 13/4

Top times top over bottom times bottom.

9 x 13 over 2 x 4

117 / 8

14 and 5/8


7 0
3 years ago
Carlotta is making cookies for a party. Her recipe calls for 2 eggs and 1 3/4 cups of flour. If Carlotta makes a large batch of
yanalaym [24]
Well we know that every 2 eggs requir 1 and 3/4 of flour so the easiest thing to do here (for me at least) is to round the fraction to the nearest whole number which in this case will be 1. Now that that's done we can say every 2 eggs calls for 2 cups of flour. Now all you need to do is multiply 2 by 9 to get 18 then put that in fraction form it'll be 17 and 3/4 cups of flour. I hope this helps!
7 0
3 years ago
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