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Evgesh-ka [11]
4 years ago
12

Write down all the even numbers from 30 to 300. How many times will the digit "6" appear?

Mathematics
1 answer:
Sergeu [11.5K]4 years ago
6 0

Step-by-step explanation:

In the Numbers from 30 to 99 the 6 will be written 1*4 + 6*1 + 1*1*2 = 12

In the Numbers from 100 to 300 the 6 will be written 0 + 3*1*4 + 3*9*1 + 3*1*1*2 = 45

So the six will be written 12 + 45 = 57 times

Is this right? Do you have the same result?

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Pani-rosa [81]

Answer:

Length of the Area = 50mtrs

Width of the Area  = 20mtrs

Step-by-step explanation: Let the x be the length and y be the width of the Area. So we can write x = 2 y + 10 and x y = 1000 or ( 2 y + 10 ) y = 1000 or 2 y 2 + 10 y = 1000 or 2 y 2 + 10 y − 1000 = 0 or y 2 + 5 y − 500 = 0 or y 2 + 25 y − 20 y − 500 = 0 or y ( y + 25 ) − 20 ( y + 25 ) = 0 or ( y + 25 ) ( y − 20 ) = 0 or y + 25 = 0 or y − 20 = 0 or y = − 25 Invalid value contains negative sign or y = 20 So Width of the Area is 20 ----------Ans By plugging the value of y = 20 in the eqn x = 2 y + 10 we get Length of the Area = 2 × 20 + 10 = 50 -------------Ans

5 0
3 years ago
The jogging track is 5/9 of a mile long. If Ashley jogged around it four times how far did she run
rewona [7]

Answer:

20/9 mile

Step-by-step explanation:

idk pretty self-explanatory

6 0
3 years ago
If ABC=85,CBD=140 , and ,ABD=1/2x=30 find the value of x.
nexus9112 [7]
Based on the given nomenclature of angles, I think the illustration would look like that shown in the attached picture. The common vertex is point B, that's why the middle point of the given angles is B. Now, according to Angle Addition Postulate, the individual interior angles should sum up to the total angle. So, the equation would be

m∠ABD = m∠ABC + m∠CBD
m∠ABC = m∠ABD - m∠CBD
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Read more on Brainly.com - brainly.com/question/5023714#readmore
5 0
4 years ago
Read 2 more answers
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Answer:

Kindly check explanation

Step-by-step explanation:

Given that :

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Number of games (g) he can play

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Question 1 of 25
PolarNik [594]

Answer:

5/2 improper, 2 1/2 proper

6 0
3 years ago
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