Pre-Algebra 8th grade

I need help with my homework that is due tomorrow.

Question 1 (Multiple Choice Worth 1 points)

(01.01 MC)

Which decimal number best describes the fraction fraction 137 over 6?

*** A repeating decimal 22.83 with a bar over 3
A terminating decimal 22.83
A repeating decimal 22.82 with a bar over 2
A terminating decimal 22.82

Question 2 (Multiple Choice Worth 1 points)

(01.07 MC)

The amounts of household waste generated in a region during two years were 23,400,000 tons and 48,100,000 tons. What was the total household waste generated over these two years in the region, expressed in scientific notation?

***7.15 ⋅ 107 tons
7.15 ⋅ 1014 tons
71.5 ⋅ 107 tons
71.5 ⋅ 1014 tons

Question 3 (Multiple Choice Worth 1 points)

(01.03 MC)

Which expression is equivalent to 54 ⋅ 5–6?

5–10
56
***fraction 1 over 5 to the power 2
fraction 1 over 5 to the power negative10

Question 4 (Multiple Choice Worth 1 points)

(01.01 LC)

Which of the following is a rational number?

square root of 79, square root of 80, square root of 81, square root of 82

***square root of 79
square root of 80
square root of 81
square root of 82

Question 5 (Multiple Choice Worth 1 points)

(01.02 LC)

There are (37)2 ⋅ 30 cherries on a farm. What is the total number of cherries on the farm?

35
39
***314
349

Question 6 (Multiple Choice Worth 1 points)

(01.07 MC)

The distance of planet Jupiter from the Sun is approximately 7.8 ⋅ 108 kilometers, and the distance of planet Mercury from the Sun is approximately 5.8 ⋅ 107 kilometers. About how many more kilometers is the distance of Jupiter from the Sun than the distance of Mercury from the Sun?

2.0 ⋅ 101
2.0 ⋅ 108
7.2 ⋅ 107
7.2 ⋅ 108

Question 7 (Multiple Choice Worth 1 points)

(01.03 LC)

What is p−m ÷ p−n equal to?

p−m − (−n)
p−m − n
p−m( −n)
p−m ÷ n

Question 8 (Multiple Choice Worth 1 points)

(01.02 MC)

If (62)p = 610, what is the value of p?

2
3
4
5

Question 9 (Multiple Choice Worth 1 points)

(01.06 LC)

Which number is not in scientific notation?

0.2 ⋅ 103
3 ⋅ 1028
1.03 ⋅ 10–2
1.5 ⋅ 10–6

Question 10 (Multiple Choice Worth 1 points)

(01.05 MC)

Which shows the expressions in the order they would appear on a number line from least to greatest?

23, Square root of 5, Square root of 20, Square root of 11, 11 over 9
23, Square root of 11, 11 over 9, Square root of 20, Square root of 11
11 over 9, square root of 5, square root of 11, square root of 20, 2 to the third power
11 over 9, 23, Square root of 5, Square root of 20, Square root of 11

Question 11 (Multiple Choice Worth 1 points)

(01.02 MC)

There are (64)2 ⋅ 60 pigs on a farm. What is the total number of pigs on the farm?

0
66
68
648

Question 12 (Multiple Choice Worth 1 points)

(01.07 LC)

What is the value of the expression All of 3.9 multiplied by 10 to the power 5 over all of 1.3 multiplied by 10 to the power 2?

3.0 × 107
2.6 × 103
2.6 × 107
3.0 × 103

Question 13 (Multiple Choice Worth 1 points)

(01.01 LC)

Which rational number equals 0 point 2 with bar over 2?

1 over 10
1 over 9
2 over 10
2 over 9

Question 14 (Multiple Choice Worth 1 points)

(01.03 MC)

What is the simplified expression for 6 to the power of 4 multiplied by 6 to the power of 3 over 6 to the power of 5?

61
62
63
67

Question 15 (Multiple Choice Worth 1 points)

(01.07 HC)

A closed container has 5.04 ⋅ 1023 atoms of a gas. Each atom of the gas weighs 1.67 ⋅ 10–24 grams.

Which of the following shows and explains the approximate total mass, in grams, of all the atoms of the gas in the container?

8.42 grams, because (5.04 ⋅ 1.67) ⋅ (1023 ⋅ 10–24 ) = 8.4168
6.71 grams, because (5.04 + 1.67) ⋅ (1023 ⋅ 10–24 ) = 6.71
0.67 grams, because (5.04 + 1.67) ⋅ (1023 ⋅ 10–24 ) = 6.71 ⋅ 10–1
0.84 grams, because (5.04 ⋅ 1.67) ⋅ (1023 ⋅ 10–24 ) = 8.4168 ⋅ 10–1

Question 16 (Multiple Choice Worth 1 points)

(1.05 LC)

Simplify (95)7.

92
912
913
935

Question 17 (Multiple Choice Worth 1 points)

(01.05 LC)

If x2 = 50, what is the value of x?

plus or minus square root 50
plus or minus square root 100
±25
±100

Question 18 (Multiple Choice Worth 1 points)

(01.07 LC)

What is the product of 3.5 ⋅ 102 and 2.4 ⋅ 103?

5.9 ⋅ 105
8.4 ⋅ 105
5.9 ⋅ 106
8.4 ⋅ 106

Question 19 (Multiple Choice Worth 1 points)

(1.05)

Simplify ten to the eighth divided by ten to the negative third.

one divided by the quantity ten to the third
one divided by the quantity ten to the eighteenth
103
1011

Question 20 (Multiple Choice Worth 1 points)

(01.05 MC)

Which number line represents all of the values of x for the equation x2 = 100?

A number line is shown from negative 60 to 0 to positive 60. There are increments of 10 on the number line, and all these increments are labeled. A dot is shown on positive 10, another dot is shown on negative 10, and they are labeled as p and q, respectively.
A number line is shown from negative 60 to 0 to positive 60. There are increments of 10 on the number line, and all these increments are labeled. A dot is shown on positive 10 and is labeled as p..
A number line is shown from negative 60 to 0 to positive 60. There are increments of 10 on the number line, and all these increments are labeled. A dot is shown on positive 50, another dot is shown on negative 50, and they are labeled as p and q, respectively.
A number line is shown from negative 60 to 0 to positive 60. There are increments of 10 on the number line, and all these increments are labeled. A dot is shown on positive 50 and is labeled as p.

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  1. If you post just 5 of these questions, I'll try to help you. Twenty questions is simply too many at once!

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    👩‍🏫
    Ms. Sue
  2. @mrs.sue it is not called a test for nothing ^-__-^

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