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grigory [225]
2 years ago
8

X : y = 5 : 3 and x + y = 56 Work out the value of x - y

Mathematics
2 answers:
Otrada [13]2 years ago
8 0

Answer:

14

Step-by-step explanation:

x / y = 5 / 3, then 3x = 5y , x = 5/3y

we can type 5/3y instead of x ;

5/3y + y = 8/3y = 56, then y = 21

.

now let's find x ;

x - 21 = 56, then x = 35

x - y = 35 - 21 = 14

Ymorist [56]2 years ago
7 0

Step-by-step explanation:

pleases try to understand this the second photo is the first, thanks

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SVETLANKA909090 [29]

Answer:

Probability that song selected after first selection is rock = 2/7

Probability that song selected from the remaining after second selection is country rock = 1/2

Step-by-step explanation:

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After first selection, probability that the song selected is rock = 2/7

After second selection, probability that the song selected from the remaining is a country song = 3/6 = 1/2

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oee [108]

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6 0
2 years ago
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AlladinOne [14]

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6 0
3 years ago
What is 4/5 of 20.5?
earnstyle [38]
To find 4/5 of 20.5 the first step is to convert 4/5 into a decimal. You can do that by dividing 4 by 5. 
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6 0
3 years ago
Read 2 more answers
14 over 70 in simplest form
Luda [366]
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hope this helps :)
5 0
3 years ago
Read 2 more answers
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