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butalik [34]
3 years ago
6

Nêu định nghĩa số hữu tỉ? Nêu quy tắc cộng, trừ, nhân ,chia số hữu tỉ?

Mathematics
2 answers:
expeople1 [14]3 years ago
6 0

số hữu tỉ là các số x có thể biểu diễn dưới dạng phân số \frac{a}{b}  trong đó a và b là các số nguyên với b {\displaystyle \neq }\neq  0.[1] Tập hợp số hữu tỉ ký hiệu là {\displaystyle \mathbb {Q} }{\displaystyle \mathbb {Q} }.[2]

Step-by-step explanat

ion:

love history [14]3 years ago
6 0

Answer:

Step-by-step explanation:

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What is 3/16 of 200 written as a percentage
Georgia [21]

The expression 3/16 of 200 expression as a percentage is; 6.25%.

<h3>What is the value of 3/16 of 200 written as a percentage?</h3>

The value of the expression given in the task content can be evaluated as follows;

3/16 × 200 = 12.5

Hence, the value 12.5 expressed as a percentage of 200 is;

(12.5/200) × 100%.

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Question 2(Multiple Choice Worth 1 points)
abruzzese [7]

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Step-by-step explanation:

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3 years ago
8. Shelley and Jim sold tickets to the basketball game. Good seats were $3 each and not so good seats cost
OverLord2011 [107]

Answer:

100 not so good seats

50 good seats

Step-by-step explanation:

Let x represent good seats and y represent not so good seats

[i] 3x + 2y = 350

[ii] x+y = 150

[iii] y = 150 - x

substitute this to equation [i]

3x + 2y = .350

3x + 2 (150-x ) = 350

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now substitute what you got to equation [iii]

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when we check the answer by using equation [i] we find that it is correct:

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150 + 200 = 350

350 = 350

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3 years ago
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