Maris has 1400 minutes to use on here phone. She had used 45 percent of her minutes. How many minutes has she used

She's used 630 minutes.

Step-by-step explanation:

She has 1400 minutes.

She used 45% of them.

1. Convert 45% to decimals. You can do by dividing by 100.

2. Multiply by the total amount of minutes.

the answer is a

step-by-step explanation:

because if you put 1 in to the square root of x it equals 300.