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mars1129 [50]
3 years ago
13

Plz plz plz help me with this

Mathematics
1 answer:
erica [24]3 years ago
6 0
This question wants you to find a common denominator for the fractions.
This means finding the LCM, least common multiple, for 21 and 9.
This can be done by listing the multiples for each number until they meet at a common one.

9:
9
18
27
36
45
54
63

21:
21
42
63

This means the LCM of 21 and 9 is 63.
So the lowest possible common denominator is 63.

21 • 3 = 63
So you have to multiply the numerator of 2/21 by 3 as well.
2 • 3 = 6
2/21 = 6/63

Now do the same for 1/9.
9 • 7 = 63
Multiply the numerator, 1, by 7.
1 • 7 = 7
1/9 = 7/63

So in the first blanks, you would put 6/63 for what 2/21 is equal to and 7/63 for what 1/9 is equal to.

7/63 is greater than 6/63.
7/63 > 6/63
That means 1/9 > 2/21
So 2/21 < 1/9 is the answer to the last blank.

Hope this helps!
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= (4*3) - (2x-1)(x²) / 3x³

= (12 - 2x³ - x²) / 3x³

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The answer is C.
Hope it helps!
3 0
2 years ago
John has 24 blue, 96 green, 16 grey, 16 red and 32 white marbles. If he wants to place them in identical groups without any marb
snow_lady [41]

Answer:

Don't take my word for this but I think the max groups he can do is 16 because that is the lowest amount of marbles.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Getaway Travel Agency surveyed a random sample of 454545 of their clients about their vacation plans. Of the clients surveyed, 2
Simora [160]

Answer:

241 clients

Step-by-step explanation:

His problem can be solved using the principle of proportionality or rule three.

We can take advantage of the proportion between respondents who tell us the number of respondents and how many expect to go on vacation and the total number of workers, therefore:  

                         Respondents /// Whole company

Vacations                  21                          x

Total                          45                        516

then x equals:

x = (516 * 21) / (45)

x = 240.8

x = 241 clients

This means that approximately 241 clients expect to go on vacation throughout the company.

8 0
3 years ago
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Car travels and average speed of 48 miles per hour how long does it take to travel 180 miles?
Neporo4naja [7]

speed =48mph

distance = 180 miles

we know that

time = distance / speed

time=\frac{180}{48} hours

time=3.75 hours..........Answer

5 0
3 years ago
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If Clay can run one lap in a ¼ of an hour. How many hours will it take him to run 5 ⅓ laps around the track.​
Serjik [45]

Answer: 21

Step-by-step explanation

5 1/4 divided by 1/4

u simplify 5 1/4 =21/4

1/4=0.25

21/4 divided by 1/4 is 21

4 0
2 years ago
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