Will give brainliest
grades in a college english class are weighted: tests 60%, book review 20%, project 20%. find the final grade of a student with averages of: tests 86, project 76, reviews 77.

57.9
91.7
65.5
82.2

82.2 (the last option)

Step-by-step explanation:

Weighted Sum

When we get a sequence of values a,b,c... and we want to know the sum of all but with different percent weights pa,pb,pc... where pa+pb+pc...=100%, we compute the weighted sum as

S=a.pa+b.pb+c.pc...

The student got this final grades: tests 86, project 76, reviews 77 and their relative weights are tests 60% (0.6), book review 20% (0.2), project 20% (0.2)

The final grade is

s=86(0.6)+76(0.2)+77(0.2)

S=82.2

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)

sure i'm up for it

step-by-step explanation: