2Pallie2
02.12.2020 •
Mathematics
What is Bethany's score on the test if she got 23 out of 30 right? (Round to the nearest whole number.)
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Ответ:
77%
Step-by-step explanation:
30 was 100%
23 is x%
x=23*100/30 = 76.666.. rounded to 77%
Ответ:
R___S___T
RT=RS+ST
39 = (23 - 2x) + (9x - 5)
39 =7x + 18
7x = 39 - 18
7x = 26
x = 26/7
x= 3.7
RS= 23 - 2x = 23 - 2(3.7) = 23 - 7.4 = 15.6
If went ST = 9x -5 = 9(3.7)- 5 = 33.3 - 5 = 28.3
I hope I helped you^_^