The amounts of e-waste generated in a region during two years were 14,200,000 tons and 10,700,000 tons. what was the total e-waste generated over these two years in the region, expressed in scientific notation? 2.49 ⋅ 107 tons 2.49 ⋅ 1014 tons 24.9 ⋅ 107 tons 24.9 ⋅ 1014 tons

1.42·10⁷ tons + 1.07·10⁷ tons = 2.49·10⁷ tons . . . . matches the first choice

The distributive property applies.

1.42·10⁷ tons + 1.07·10⁷ tons = (1.42 + 1.07)·10⁷ tons = 2.49·10⁷ tons

Option A

Step-by-step explanation:

The amount of e waste generated in a region during two  years was 14,200,000 tons and 10,700,000 tons.

So total e waste generated over these two years will be

= 14200000 + 10700000

= 24,900,000

Now we have to express the total amount in the scientific notation.

24900000 = 2.49 × 10000000

                  = 2.49 × 10⁷

Option A is the correct answer.

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.

a .4y4

hope this !