Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Step-by-step explanation:

1. Both number are written in scientific notation, because both have the following form:

Where a is a number between 1 and 10 (but not including 10) and the exponent b is an integer.

2. Both have the same exponent, therefore, you can subtract 3.2 and 1.1 and write again, as you can see below:

step-by-step explanation:

if y=4x then you will substitute 4x in for y in the second equation.

8x + 4x = 18 combine like terms

12x = 18 divide by 12 on both sides

x = 18/12 or 3/2

now replace x in the first equation with 3/2 to get

y = 4 3/2

y = 6

the answer is a

(3/2,6)

hope that .

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