In speech class, Carolyn needs at least a B + to keep her financial aid. To earn a B+, the average of her four speeches must be

Question

2 years ago

14

at least an 85. On the first 3 she scored 85, 77, and 81. Determine the minimum score speech to get a B+.

2 answers:

soldier1979 [14.2K] · Answer 1 · 2022-11-29T23:15:34+03:00

Answer:

97

Step-by-step explanation:

Relative to the average she wants, Carolyn's scores are ...

85-85 = 0

77-85 = -8

81-85 = -4

Carolyn's score total is -8-4 = -12 points from the average she wants, so she must get 85+12 = 97 on her speech to achieve a B+ average.

_____

<em>Check</em>

With a 97, Carolyn's average would be ...

(85 +77 +81 +97)/4 = 340/4 = 85

Arada [10] · Answer 2 · 2022-11-29T20:53:07+03:00

Arada [10]2 years ago

4 0

Answer:

<h3>The minimum score speech to get a B+ is 89.</h3>

Step-by-step explanation:

Average of the first 3 = 85 + 77 + 81 / 3

= 243 / 3

= 81

The fourth score ( to get 85 ) = 81 + 89

= 170 / 2

= 85