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

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1