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Oxana [17]
2 years ago
10

How many numbers between 100 and 999 are divisible by 4?

Mathematics
1 answer:
QveST [7]2 years ago
7 0
Try this solution:
1. Note, that 100 is divisible by 4, and 999 is not divisible by it, only 996. This is an arithmetic sequence.
2. a1;a2;a3;a4;...a(n) the sequence, where a1=100; a2=104; a3=108; a4=112; ... etc., and a(n)=996. n=?
3. using a formula for n-term of the sequence: a(n)=a1+d(n-1), where a(n)=996; a1=100 and d=4 (according to the condition ' is divisible by 4'). Then 100+4(n-1)=996; ⇒ 4n=900; ⇒ n=225 (including 100).

answer: 225
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7 0
3 years ago
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Anit [1.1K]
Ron has 22 cards
number one tip in math, try to create equation!
set number of cards Ron has as x (always set x as what you are looking for)
set number of cards Tori has as (x-9) because if Ron has 9 more cards than Tori that's same thing as saying Tori has 9 cards less than Ron
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Therefore,
x + (x-9) = 35
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2x-9=35
bring over 9 to other side
2x=44
divide both sides by 2
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So number of cards Ron has is 22

3 0
3 years ago
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lora16 [44]

Answer:

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Step-by-step explanation:

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11(16)- 20 +13

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169

7 0
3 years ago
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stich3 [128]

I think it's 3

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Answer:

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Step-by-step explanation:

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