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Aneli [31]
3 years ago
15

Given that a:b = 5:4 and b/c = 7:3 find: a:b:c

Mathematics
1 answer:
USPshnik [31]3 years ago
8 0

a/b=5/4

a=5k

b=4k

b/c=7/3

b=7x

c=3x

b=4k

b=7x

4k=7x   =>

k=7y

x=4y

a/b/c=

=5*7*y/4*7*y/3*4*y=

=35y/28y/12y=

=35/28/12y=

=5/4/12y=

=1,25/12y=

=0.1041666666666667/ y

there may be a mistake in my answer

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For questions 1 - 8, list all the factors of the following numbers from least to greatest.
IrinaK [193]

Answer:

1. 1, 2, 5, 10

2. 1, 5, 25

3. 1, 2, 4, 8, 16, 32

4.  1, 3, 9, 27, 81

5. 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

6. 1, 2, 4, 5, 10, 20, 25, 50, 100

7. 1, 5, 25, 125

8. 1, 2, 4, 11, 22, 44

Step-by-step explanation:

Hope this helps!

4 0
3 years ago
Mr Satyal borrowed Rs 50000 and after ane year she returned the loan by paying 60000. What is the intrest paid and what is the r
Hatshy [7]

The interest paid is Rs 10000

The rate of interest  is  20%

Step-by-step explanation:

Step 1 :

Amount  borrowed by Mr. Satyal = Rs 50000

Amount repaid  = Rs 60000

Interest is charged on the principal amount and the amount repaid will be the sum of the interest paid plus the principal amount

Hence the interest paid is 60000 - 50000 = Rs 10000

Step 2:

The rate of interest is  calculated as follows :

Divide the interest calculated by the principal amount and is expressed as percentage.

Hence the interest rate  = \frac{10000}{50000} × 100 = 20%

Step 3 :

The interest paid is Rs 10000

The interest rate  is  20%

5 0
4 years ago
I am in need of help :) please and thank you :):
nika2105 [10]
It’s the second answer
8 0
3 years ago
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A coral reef grows 13 m every week. How much does it grow in 8 weeks? Write your answer in millimeters
Anastasy [175]

In 8 weeks the reef grows 13 m, or 104 m.

Converting 104 m into mm:

104 m     1000 mm

--------- * ------------- = 104,000 mm

   1               1 m

3 0
3 years ago
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murzikaleks [220]
The ordered pair (-1,5) is a solution to the system because it makes both equations true.

1) x+y=4
2) x-y=-6

1) -1 + 5 = 4
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        so
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2) -1 - 5 = -6
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          so
        -6 = -6
3 0
4 years ago
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