math help plzzzz!!!!
posted by josh on .
Multiple Choice
1. What is 0.32 written as a fraction in simplest form? (1 point)
thirtytwo over one hundred
eight over twentyfive
one hundred over thirtytwo
sixteen over twentyfive
2. If Fran’s fudge recipe calls for two and onehalf cups of sugar and she increases it by twofifths of a cup, how much sugar does she use? (1 point)
two and twotenths
2two and threesevenths
2two and fourninths
2two and ninetenths
3. Which of the following makes the statement true? one over five to the zero power = ? (1 point)
1
–1
–5
0
4. The area of a certain state is 840,000 square miles. What is this area in scientific notation? (1 point)
8.4 x 104
84 x 103
84 x 103
8.4 x 105
5. Which is irrational? (1 point)
0.117117117 . . .
0.8596873205 . . .
0.812812812812 . . .
0.605605605 . . .
6. If there is onehalf of a pizza and Jonas wants only onethird of it, how much of the pizza will he eat? (1 point)
onefifth
twofifths
onesixth
twosixths
7. Harold brought two loaves of raisin bread to share with his friends. If there are 12 people total, including Harold, how much of the bread does each person receive? (1 point)
0.06
0.16 repeating
0.25
point three repeating
8. One nanometer is about 0.00000003937 of an inch. What is this number in scientific notation? (1 point)
3.937 x 108
3.937 x 108
39.37 x 10–7
39.37 x 107
9. What is threeeighths written as a decimal? (1 point)
two point three repeating
0.375
point three repeating
2.667
10. According to the 2010 census data, the population of Texas was about 2.5 x 107 people. The land area of Texas is about 2.6 x 105 m2. What was the average number of people per square mile in 2010? (1 point)
0.96 x 102
9.6 x 101
0.96 x 1035
9.6 x 1012
11. Based on the 2010 census, the population of Georgia was 9.6 x 106 people. Which state had a larger population? (1 point)
Alaska: 7.1 x 105
New York: 1.9 x 107
Wyoming: 5.6 x 105
Idaho: 1.5 x 106
12. Which of the following numbers is an example of an integer? (1 point)
square root of five
square root of nine
onethird
0.8
13. Which number is equivalent to fourfifths? (1 point)
twentyfive over one hundred
0.2
sixteen over one hundred
0.8
14. Riding the bus, Jasmine uses twothirds of her money for bus fare. What is this number as a decimal? (1 point)
point three repeating
point six repeating
point eight repeating
one point five repeating
15. What is the solution to 2sixsevenths ÷ twofourteenths? (1 point)
7
14
20
40

1.
0.32 = 32 / 100 = 4 * 8 / ( 4 * 25 ) = 8 / 25
2.
2 + 1 / 2 + 2 / 5 = 2 + 5 * 1 / ( 5 * 2 ) + 2 * 2 / ( 5 * 2 ) = 2 + 5 / 10 + 4 / 10 = 2 + 9 / 10
3.
The number raised to the zero power is equal to one.
( 1 / 5 ) ^ 0 = 1
4.
840,000 = 8.4 * 100 * 1,000 = 8.4 * 10 ^ 2 * 10 ^ 3 = 8.4 * 10 ^ 5
5.
An Irrational Number is a real number that can't be written as a simple fraction.
0.117117117... = 117 / 999
0.8596873205... can't be written as the fraction
0.812812812812... = 812 / 999
0.605605605... = 605 / 999
So 0.8596873205... is irrational.
6.
( 1 / 2 ) * ( 1 / 3 ) = 1 / 6
7.
2 / 12 = 2 / ( 2 * 6 ) = 1 / 6 = 0.16666666
8.
0.00000003937 = 3.937 / 100,000,000 = 3.937 / 10 ^ 8 = 3.937 * 10 ^  8
9.
3 / 8 = 0.375
10.
2.5 * 10 ^ 7 / ( 2.6 * 10 ^ 5 ) =
( 2. 5 / 2.6 ) * 10 ^ 7 / 10 ^ 5 =
0.96 * 10 ^ 2
11.
New York: 1.9 * 10 ^ 7
12.
sqrt ( 9 ) = 3
13.
4 / 5 = 2 * 4 / ( 2 * 5 = 8 / 10 = 0.8
14.
2 / 3 = 0.66666
15.
( 2 + 6 / 7 ) / ( 2 / 14 ) = ( 2 * 7 / 7 + 6 / 7 ) / [ ( 2 * 1 ) / ( 2 * 7 ) ] =
( 14 / 7 + 6 / 7 ) / ( 2 * 1 ) / ( 1 / 7 ) =
( 20 / 7 ) / ( 1 / 7 ) = 7 * 20 / 7 = 20 
QUESTION 10'S ANSWER IS :
************9.6 x 10^1 *************
^^^^^^^^^^^^^^^^^^^^^^
BOSNIAN IS WRITE ON EVERYTHING EXCEPT QUESTION 10 THE ANSWER TO QUESTION 10 IS ABOVE ^^ 
5 is wrong

The answers are....
1.b
2.d
3.a
4.d
5.b
6.c
7.b
8.a
9.b
10.b
11.b
12.b
13.d
14.b
15.c
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