Question

The mass of a North American western pygmy butterfly is 4.2×10–3 grams.

How is 4.2×10–3 written in standard notation?
Responses
A 0.000420.00042
B 0.0420.042
C 0.00420.0042
D 4,200

Answer 1

4.2×10–3 is written in standard notation as 0.0042.

Answer 2

A corporation earned a profit of $2.5 × 104 for 1 × 103 days in a row. What was the corporation’s total profit during this time period? Write the answer in scientific notation.
Responses
A 2.5 X 10−7
2.5 X 10negative 7
B 2.5 X 107
2.5 X 107
C 2.5 X 106
2.5 X 106
D 2.5 X 105

Answer 3

To find the corporation's total profit during this time period, we need to multiply the profit per day by the number of days.

Profit per day = $2.5 × 10^4
Number of days = 1 × 10^3

To multiply these two values, we add the exponents together.

(2.5 × 10^4) * (1 × 10^3) = 2.5 × 1 × 10^(4 + 3) = 2.5 × 10^7

Therefore, the corporation's total profit during this time period is $2.5 × 10^7.

The correct answer is B. 2.5 X 10^7

Answer 4

Determine the correct scientific notation form of the number.

1,336,000,000
Responses
A 1.336 x 106
1.336 x 10 6
B 1.336 x 109
1.336 x 10 9
C 1336 x 106
1336 x 10 6
D 1336 x 109

Answer 5

To write 1,336,000,000 in scientific notation, we need to move the decimal point to the right so that only one digit is left in front of the decimal.

1,336,000,000 = 1.336 x 10^9

Therefore, the correct scientific notation form of the number is 1.336 x 10^9.

The correct answer is B. 1.336 x 10^9.