#### • Class 11 Physics Demo

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Question:1. Convert -1/2 into decimal. Show your work using long division. 2. Plot the fractions in problem 1 on a number line. Can somebody explain me how to do it. Or just take other example please!!!

Answers:I can't show you with the division sign but you know what the long division sign looks like so the 2 is on the outside and the 1 is in the inside, 2 will not go into 1 so you need to put the decimal point after the 1 and add a zero, now on the top line of the long division you put the decimal point right above where you put it on the one, on the top line put a zero in front of the decimal point (to the left of it) because 2 will not go into 1 so it looks on the top line like 0. and now how many times does 2 go into 10 - 5 so your answer will be 0.5 which is the same as 1/2. So remember the bottom number (the denominator) goes on the outside of a long division problem, the top number (numerator) goes on the inside. Now I am just noticing, is it negative 1/2? then it would be a negative divided by a positive, it would stay negative. so on a number line I would use the boundaries of -2 to 2 but you could use other numbers, if it is -1/2 it would be between -2 and 1, right in the middle, if it is 1/2 it would be right in the middle between 1 and 2. Good luck! Hope you could understand what I was talking about.

Question:1.Choose the correct greatest common factor of 16 and 24. A)16 B)8 C)4 D)2 2.Find the volume of the solid shown. You must show your work for this problem in your Answer Sheet. A)150 ft3 B)125 ft3 C)100 ft3 D)175 ft3 3.Divide Write the result in simplest form. You must show your work for this problem in your Answer Sheet. A) B) C) D) 4.Multiply Write your answer in simplest form. You must show your work for this problem in your Answer Sheet. A) B) C) D) 5.An airline had 122, 138, 114, and 133 passengers on four flights from San Diego to San Jose during 1 day. What was the total number of passengers? You must show your work for this problem in your Answer Sheet. A)507 B)607 C)617 D)497 6.Find the area of the figure. You must show your work for this problem in your Answer Sheet. A)10 in.2 B)15 in.2 C)20 in.2 D)25 in.2 7.Write the word name for the following. 300,612 A)Three hundred, six twelve B)Three hundred, six hundred twelve C)Three hundred thousand and six hundred and twelve D)Three hundred thousand, six hundred twelve 8.Identify the numerator and denominator of the fraction A)Numerator: 17; denominator: 8 B)Numerator: 8; denominator: 17 9Change to a mixed or whole number. A)9 B) C) D)8 10.Give the place value for the indicated digit. 8 in the number 138,350 A)Ones B)Tens C)Hundreds D)Thousands 11.Choose the correct prime factorization of the number 117. A)2 x 3 x 15 B)3 x 3 x 11 C)2 x 3 x 13 D)3 x 3 x 13 125.Choose the correct list of prime numbers between 10 and 30. A)13, 17, 19, 23, and 29 B)11, 13, 17, 19, and 29 C)11, 13, 17, 19, 23, and 29 D)11, 13, 18, 19, 23, and 29 13.Divide. You must show your work for this problem in your Answer Sheet. A)24r10 B)24 C)26 D)24r8 14.What is the product of 126 and 604? You must show your work for this problem in your Answer Sheet. A)8,064 B)12,010 C)76,104 D)80,640 15.Perform the indicated addition. 16.Do the indicated subtraction. 17.Are and equivalent fractions? A)Yes B)No 18.Name the property of addition that is illustrated. 5 + 6 = 6 + 5 A)Associative property of addition B)Commutative property of addition C)Additive identity property 19.Which of the numbers 18, 48, 452, 486, and 844 are divisible by 4? 20.Round the following number to the indicated place. 4,272, the nearest hundred

Answers:1. C 2. C 3. C 4. C 5. C 6. C 7. C 8. C 9. C 10. C 11. C 12. C 13. C 14. C 15. C 16. C 17. C 18. C 19. C 20. 42,724,272

Question:Write the equation of a function with the x intercept of (-3,0) and a point at (2,10). Please show how you got this. Please write this in the standard form and then tell me how many solutions there are: (Show Work) y <= .5(x-1)^2 + 2 (<= means less than or equal to)

Answers:Use slope formula: m= (y2-y1)/(x2-x1) = (10-0)/(2-(-3)) = 10/(2+3)= 10/5 = 2 Then plug in that slope and (x1,y1) to this point slope form equation: (y-y1) = m(x-x1) (y-0) = 2(x-(-3)) y= 2(x+3) y= 2x+6 Ok..... y <= .5(x-1)^2 + 2 = .5(x^2 -2x +1) + 2= .5x^2 -x + (1/2) + 2 = .5x^2 - x + 2.5 Best answer right? :D

Question:Jane donates 2% of her annual salary to Charity and Sam donates 1% of his annual salary to Charity. The total of Jane and Sams donation is $620.If Jane makes$1000 more than Sam, how much is Janes annual salary ?

Answers:2/100 Jane + 1/100 Sam = 620 Jane = Sam + 1000 __________________________ 2Jane + Sam = 62000 2(Sam + 1000) + Sam = 62000 2 Sam + 2000 + Sam = 62000 3 Sam = 62000-2000 Sam = 60000/3 _________________________________ Sam makes $20000, Jane makes$21000 annualy.

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