Suppose your grades on four science exams are 99, 86, 76, and 95. what grade do you need on your next exam to have a 91 average on the five exams? a. 89.4 b. 93 c. 90 d. 99

Option D.

Step-by-step explanation:

Let

x------> the grade in the fifth exam

we know that

solve for x

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

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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