Can you please help me with this math problem please.

Step-by-step explanation:

$298.90

Step-by-step explanation:

Add the percents: 15 + 8 + 9 + 7 = 39

Find 39 percent of 490: 490 X 0.39 = 191.10

Subtract from the total: 490 - 191.10 = 298.90

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'.

step-by-step explanation:

the true ones are a b and d