What is the result of adding 2.5 x 103 and 3.5 x 102?

The result is 2.85 x 10^3

Step-by-step explanation:

The exercise is adding two number with Scientific notation, that is a way of simplify a large number

Scientific notation is a number multiplied by a power of 10.

In this case, we are adding

2.5 x 10^3

3.5 x 10^2

We need the same power, so we can add them. To change the power,  from 10^2 to 10^3,   we can divide by 10 the number.

So,

2.5 x 10^ 3 + 0.35 x 10^3= 2.85 x 10^3

step-by-step explanation:

$11.01

$16

$15

$4

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step-by-step explanation: