Calculate 4.8×10^−3 − 9.4×10^−6 . Express the answer in scientific notation rounding to 2 decimal places.(1 point)
To subtract 9.4 x 10^(-6) from 4.8 x 10^(-3), you need to subtract the coefficients and keep the exponent the same.
4.8 x 10^(-3) - 9.4 x 10^(-6) = (4.8 - 9.4) x 10^(-3)
= -4.6 x 10^(-3)
Since the coefficient is negative, the answer is -4.6 x 10^(-3).
To subtract two numbers in scientific notation, we must first ensure that the exponents are the same. In this case, we have:
4.8 × 10^(-3) and 9.4 × 10^(-6)
To make the exponents the same, we can convert 9.4 × 10^(-6) to 10^(-3) by multiplying it by 1000:
9.4 × 10^(-6) × 1000 = 9.4 × 10^(-6) × 10^3 = 9.4 × 10^(-6 + 3) = 9.4 × 10^(-3)
Now that the exponents are the same, we can subtract the coefficients:
4.8 × 10^(-3) - 9.4 × 10^(-3) = (4.8 - 9.4) × 10^(-3) = -4.6 × 10^(-3)
Rounded to two decimal places, the answer is approximately -4.60 × 10^(-3).
To calculate the expression 4.8×10^−3 − 9.4×10^−6, we need to subtract the two numbers.
Step 1: Since the numbers are in scientific notation, we need to make sure that the exponents are the same. In this case, both numbers have exponents of -3 and -6.
Step 2: To subtract the numbers, we keep the same exponent and subtract the coefficients.
4.8×10^−3 - 9.4×10^−6 = (4.8 - 9.4) × 10^−3
Step 3: Calculate the difference between the coefficients.
4.8 - 9.4 = -4.6
Step 4: Express the answer in scientific notation.
Since the difference is -4.6, we need to move the decimal point one position to the left.
-4.6 × 10^−3 can be expressed as -4.6×10^−3.
Rounding to 2 decimal places, the final answer is approximately -4.60×10^−3.
-4.6 x 10^(-3).
is this the answer? or is it wrong?