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viva [34]
3 years ago
14

Will the difference of two rational numbers be always rational

Mathematics
1 answer:
spayn [35]3 years ago
7 0

Since ad, bc, and bd are integers since integers are closed under the operation of multiplication and ad-bc is an integer since integers are closed under the operation of subtraction, then (ad-bc)/bd is a rational number since it is in the form of 1 integer divided by another and the denominator is not eqaul to 0

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3x + 6y = 42 <br> -7x + 8y = -109
Sladkaya [172]

Answer:

x+2y-14=0

Step-by-step explanation:

Divide both sides of equation by 3

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3 years ago
What is the sum of the roots of the polynomial shown below?<br> f(x) = 3r?+ 12x² + 3x - 18
densk [106]

Answer:

24x+3

Step-by-step explanation:

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Question 5 of 20 :
Rudik [331]

Answer:

Following the rule of BIDMAS

we will solve the one inside the bracket first, Addition will be solved before subtraction

i.e ( 5+4-2) x ( - 2)

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Step-by-step explanation:

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3 years ago
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disa [49]

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Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What shows the volume
Svetllana [295]

Answer:

654 1/2 cm³

Step-by-step explanation:

First the volume of the cylinder, the formula for that is πr²h

Radius is half of diameter so 7/2=3.5

3.5^2=12.25

12.25x22/7=38.5

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Now we add them together to find total volume.

577.5+77=654.5


8 0
3 years ago
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