Olivia's family drove to Disneyland for spring break. Her mom and dad shared driving duties for a total of 14 hours. Her mom drove 65 miles per hour and her dad drove 60 miles per hour. They drove a total of 895 miles. How many hours did each person drive.

Dad = 3 hours

Mom = 11 hours

Step-by-step explanation:

Let the number of hours driven by her mum be m.

Let the number of hours driven by her dad be d.

We can form equation from the question as:

d + m = 14 i

60d + 65m = 895 ii

Since d + m = 14, d = 14 - m

Substitute 14 - m into d in equation ii

60d + 65m = 895

60(14 - m) + 65m = 895

840 - 60m + 65m = 895

840 + 5m = 895

5m = 895 - 840

5m = 55

m = 11

The mother drove for 11 hours

Since d + m = 14

d + 11 = 14

d = 14 - 11

d = 3

The father drive for 3 hours

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

ƒ = 0.03b

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step-by-step explanation: