1: Bellringer Heather would like to have an average of 90 in her science class. There are four assignments with the following gr

Question

1: Bellringer
Heather would like to have an average of 90 in her science class.
There are four assignments with the following grades:
82, 95, 88, 86
What grade will Heather need to make on the last assignment to meet her goal?
O 98
O 99
O 87
O 88

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Hưng Khoa 4 years 2021-09-02T01:05:11+00:00 1 Answers 15 views 0

Answers ( )

  1. Tryphena
    0
    2021-09-02T01:06:42+00:00
    Reply

    Answer:

    99

    Step-by-step explanation:

    Grades obtained:

    • 82, 95, 88, 86

    Target grade:

    • 90

    Required grade = x, then average is:

    • (x+82+95+88+86)/5 = 90
    • x + 351 = 90*5
    • x = 450 – 351
    • x = 99

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