Applications of Multiplying Rational Numbers Quick Check

Question

1 of 51 of 5 Items
Question
How-to books make up 0.3 of the books in the school library. Of these, 0.2 deal with carpentry and 0.4 deal with electronics.

0.3×0.4=0.12
Interpret what the answer 0.12 represents in this equation above.

(1 point)
Responses

the portion of the how-to books that are about either carpentry or electronics
the portion of the how-to books that are about either carpentry or electronics

the portion of books in the library that are how-to books
the portion of books in the library that are how-to books

the portion of the books in the library that are how-to books on electronics
the portion of the books in the library that are how-to books on electronics

the portion of books in the library that are how-to books on carpentry

Answer 1

the portion of books in the library that are how-to books on carpentry

Answer 2

Sara discarded 1/10 of the apples she picked as defective. Of the apples remaining, 300 were made into cider. The rest were sold as fresh fruit. What fraction of the total apples picked were sold as fresh fruit?(1 point)
Responses

not enough information

3/5
Start Fraction 3 over 5 End Fraction

3/10
Start Fraction 3 over 10 End Fraction

4/5

Answer 3

4/5

Answer 4

The town of Oak Manor measures 3.8 miles by 4.2 miles. Solve for the total area.(1 point)
Responses

16 mi2
16 mi squared

8 mi2
8 mi squared

15.96 mi2
15.96 mi squared

15.96 mi

Answer 5

15.96 mi²

Answer 6

A diver searches for a sunken treasure that is 97.2
feet below the surface. What is the diver's elevation when he is 2/3 of the way down? (1 point)
Responses

−32.4
ft.
negative 32 point 4 ft.

−64.8
ft.
negative 64 point 8 ft.

−48.5
ft.
negative 48 point 5 ft.

−145.8 ft.

Answer 7

-64.8 ft.

Answer 8

A basketball player is 623 feet tall. His infant son is 14 as tall. How tall is his son?(1 point)
Responses

112 ft.
1 Start Fraction 1 over 2 End Fraction ft.

123 ft.
1 Start Fraction 2 over 3 End Fraction ft.

2212 ft.
2 Start Fraction 2 over 12 End Fraction ft.

223 ft.

Answer 9

112 ft.

Answer 10

A basketball player is 6 2/3 feet tall. His infant son is 1/4 as tall. How tall is his son?(1 point)
Responses

1 1/2 ft.
1 Start Fraction 1 over 2 End Fraction ft.

1 2/3 ft.
1 Start Fraction 2 over 3 End Fraction ft.

2 2/12 ft.
2 Start Fraction 2 over 12 End Fraction ft.

2 2/3 ft.

Answer 11

1 2/3 ft.

Answer 12

Without calculating, which of the following quotients can you determine will be positive?
−111 ÷ 37
negative 111 divided by 37

1,001 ÷ (−143)
1,001 divided by Left Parenthesis negative 143 Right Parenthesis

657 ÷ (−23)
657 divided by Left Parenthesis negative 23 Right Parenthesis

−725 ÷ (−29)
negative 725 divided by Left Parenthesis negative 29 Right Parenthesis

Answer 13

−725 ÷ (−29) (negative 725 divided by negative 29)

Answer 14

Which of the following does not have the same value as the others?(1 point)
Responses

−3/7
Start Fraction negative 3 over 7 End Fraction

−3/7
negative Start Fraction 3 over 7 End Fraction

3 / −7
Start Fraction 3 over negative 7 End Fraction

−3/−7

Answer 15

−3/7 (negative 3/7)

Answer 16

Using the rules for dividing signed numbers, what is the quotient when you divide 56÷(−4)÷(−2)?(1 point)
Responses

−28
negative 28

−7
negative 7

7
7

28

Answer 17

−7 (negative 7)

Answer 18

What is the quotient of −7÷(−3)?

3/7
Start Fraction 3 over 7 End Fraction

−3/7
negative Start Fraction 3 over 7 End Fraction

−2 1/3
negative 2 Start Fraction 1 over 3 End Fraction

2 1/3

Answer 19

3/7 (3 over 7)

Answer 20

Which statement is correct?(1 point)
Responses

Division is both commutative and associative.
Division is both commutative and associative.

Division is associative but not commutative.
Division is associative but not commutative.

Division is commutative but not associative.
Division is commutative but not associative.

Division is neither commutative nor associative.

Answer 21

Division is neither commutative nor associative.

Answer 22

these were all wrong stupid bot