The total cost in dollars to deliver all the pieces can be calculated by multiplying the number of pieces of mail by the cost of each stamp:
1.52 × 10^10 * $0.55 = 8.36 × 10^9 dollars
Therefore, the total cost is 8.36 × 10^9 dollars.
In a given year, about 1.52 × 1010 pieces of first-class mail are delivered in the U.S. If each piece of
mail carries a stamp costing $0.55, what is the total cost in dollars to deliver all the pieces? Write the
answer in scientific notation, expressed to the exact decimal place.
11 answers
What is 5.5 x 104 multiplied by 2.2 x 10-8? Write the answer in scientific notation. (1 point)
O 1.21 × 10-5
O 1.21 × 10-3
O 1.21 x 10-4
O 12.1 x 10-4
O 1.21 × 10-5
O 1.21 × 10-3
O 1.21 x 10-4
O 12.1 x 10-4
To multiply numbers in scientific notation, we multiply the coefficients and add the exponents.
For 5.5 x 10^4 multiplied by 2.2 x 10^-8:
(5.5 * 2.2) * 10^(4 + (-8)) = 12.1 * 10^-4
Therefore, the answer is 1.21 × 10^-3 in scientific notation.
For 5.5 x 10^4 multiplied by 2.2 x 10^-8:
(5.5 * 2.2) * 10^(4 + (-8)) = 12.1 * 10^-4
Therefore, the answer is 1.21 × 10^-3 in scientific notation.
When multiplying two numbers in scientific notation, what operations do you use on the coefficients
and the exponents of the powers of 10? (1 point)
O Add the coefficients and multiply the exponents of the powers of 10.
O Multiply the coefficients and multiply the exponents of the powers of 10.
O Add the coefficients and add the exponents of the powers of 10.
O Multiply the coefficients and add the exponents of the powers of 10.
and the exponents of the powers of 10? (1 point)
O Add the coefficients and multiply the exponents of the powers of 10.
O Multiply the coefficients and multiply the exponents of the powers of 10.
O Add the coefficients and add the exponents of the powers of 10.
O Multiply the coefficients and add the exponents of the powers of 10.
The correct answer is: Multiply the coefficients and add the exponents of the powers of 10.
A tape dispenser holds 1.14 x 104 mm of tape that is 12.7 mm wide. Multiply the two numbers to
find the total area in square millimeters of tape. Write the product in scientific notation. (1 point)
O 14.478 × 104 mm?
O 1.4478 × 104 mm?
O 1.4478 × 105 mm2
O 14.478 × 105
mm?
find the total area in square millimeters of tape. Write the product in scientific notation. (1 point)
O 14.478 × 104 mm?
O 1.4478 × 104 mm?
O 1.4478 × 105 mm2
O 14.478 × 105
mm?
To find the total area in square millimeters of tape, we multiply the length of the tape by the width of the tape:
1.14 x 10^4 mm * 12.7 mm
To multiply these two numbers, we multiply the coefficients and add the exponents:
1.14 * 12.7 * 10^(4 + 0) = 14.478 * 10^4 mm^2
Therefore, the product is 1.4478 × 10^5 mm^2 in scientific notation. Hence, the correct answer is O 1.4478 x 10^5 mm^2.
1.14 x 10^4 mm * 12.7 mm
To multiply these two numbers, we multiply the coefficients and add the exponents:
1.14 * 12.7 * 10^(4 + 0) = 14.478 * 10^4 mm^2
Therefore, the product is 1.4478 × 10^5 mm^2 in scientific notation. Hence, the correct answer is O 1.4478 x 10^5 mm^2.
A sugar cube has a volume of about 4.9 ml. What is the total volume in milliliters of 1.5 x 10--> 6 sugar
cubes? (1 point)
O 7.35 x 10--> 6 ml
O 0.735 x 10--> 7 m
O 735 × 10--> 5 ml
O 7.35 × 10--> 7 ml
cubes? (1 point)
O 7.35 x 10--> 6 ml
O 0.735 x 10--> 7 m
O 735 × 10--> 5 ml
O 7.35 × 10--> 7 ml
To find the total volume in milliliters of multiple sugar cubes, we need to multiply the volume of one sugar cube by the number of sugar cubes.
Volume of one sugar cube = 4.9 ml
Number of sugar cubes = 1.5 x 10^6
To multiply these two values, we multiply the coefficients and add the exponents:
(4.9 ml) * (1.5 x 10^6 cubes) = (4.9 * 1.5) * 10^(6 + 0) ml
= 7.35 * 10^6 ml
Therefore, the total volume is 7.35 x 10^6 ml. Thus, the correct answer is O 7.35 x 10^6 ml.
Volume of one sugar cube = 4.9 ml
Number of sugar cubes = 1.5 x 10^6
To multiply these two values, we multiply the coefficients and add the exponents:
(4.9 ml) * (1.5 x 10^6 cubes) = (4.9 * 1.5) * 10^(6 + 0) ml
= 7.35 * 10^6 ml
Therefore, the total volume is 7.35 x 10^6 ml. Thus, the correct answer is O 7.35 x 10^6 ml.
Multiply 0.75 by 2.8 x 10-5. (1 point)
O 2.1 × 10-5
O 21 x 10-7
O 2.1 x10-4
O 2.1 x 10-6
O 2.1 × 10-5
O 21 x 10-7
O 2.1 x10-4
O 2.1 x 10-6
To multiply 0.75 by 2.8 x 10^-5, we multiply the coefficients and add the exponents.
0.75 * 2.8 x 10^-5 = 2.1 x 10^-5
Therefore, the answer is O 2.1 x 10^-5.
0.75 * 2.8 x 10^-5 = 2.1 x 10^-5
Therefore, the answer is O 2.1 x 10^-5.
4 answers