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OLEGan [10]
3 years ago
15

AM i correct? rational expression question

Mathematics
1 answer:
Basile [38]3 years ago
8 0

Answer:

\frac{16}{7(x + 4)}  +  \frac{5}{7(x - 3)}

your answer is not correct.

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Need help please ????
Yuki888 [10]

Answer:

The answer is 12

Step-by-step explanation:

36/9 = 4

4 x 3 = 12

7 0
3 years ago
At a garage sale books cost $1.50 each and musical
Novosadov [1.4K]

Answer:

$16

Step-by-step explanation:

4 books would cost $6 and 5 tapes would be $10. Add them to get 16.

8 0
3 years ago
Read 2 more answers
A 70 cm long stick is cut into two parts in such a way that the longer part is 20 cm longer than the shorter part. How long is e
Pachacha [2.7K]

Answer:

The longer part is <u>45 cm</u> long and the shorter part is <u>25 cm</u> long.

Step-by-step explanation:

Given:

A 70 cm long stick is cut into two parts in such a way that the longer part is 20 cm longer than the shorter part.

Now, to find the length of each part of the stick.

Let the shorter part be x.

So, the longer part is x+20.

Total length of the stick = 70 cm.

Now, to get the length of each part we solve an equation:

(x)+(x+20)=70\\\\x+x+20=70\\\\2x+20=70\\\\Subtracting\ both\ sides\ by\ 20\ we\ get:\\\\2x=50\\\\Dividing\ both\ sides\ by\ 2\ we\ get:\\\\x=25.

<em>The length of the shorter part is 25 cm.</em>

Now, substituting the value of x:

x+20\\\\=25+20\\\\=45\ cm.

<em>The length of longer part is 45 cm.</em>

Therefore, the longer part is 45 cm long and the shorter part is 25 cm long.

6 0
3 years ago
A group of 18 people ordered soup and sandwiches for lunch. Each person in the group either ordered one soup or one sandwich . T
kkurt [141]
Let's say a = number of ordered soups, b = number of ordered sandwiches.

Then 4.5a + 7.75b = 113.50, and a and b are integers between 0 and 18 inclusive.

How do we tackle this? If all ordered soup, the cost would be $81, so we'll have at least 4 sandwiches. If all ordered sandwich, the cost would be $139.5, so at most 15 sandwiches were ordered. You also know an even number of sandwiches was ordered, to let the price end at 50 cent.

If you brute-force from 4,6,8,10,12 to 14 sandwiches, you find the answer at 10 sandwiches and 8 soups.

10*7.75 + 8*4.50 = 113.50


8 0
3 years ago
(5/3)^-2<br> (9/11)^-1 <br> brainlest
katovenus [111]

Answer: 0.44

Step-by-step explanation:      5/3)^-2=0.36       (9/11)^-1=1.22222222  The 2 goes on forever so 1.22.

<u><em>Was this helpfull to you?</em></u>

3 0
3 years ago
Read 2 more answers
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