xlansmooth
07.12.2020 •
Mathematics
There are 45 questions on your math exam. You answered 810 of them correctly. How many questions did you answer correctly?
BRAINLIEST
a.44 1/5 questions
b.36 questions
c.9 questions
d.67 1/2 questions
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Ответ:
B. 36 questions
Step-by-step explanation:
First, change the fraction to a percentage. Now you need to find 80% of 45. I use this setup here:
80/100 = x/45
To find x, or the number of questions you got correct, you will multiply 45 and 80.
45 x 80 = 3,600
You will then divide the product by the remaining number, which is 100.
3,600/100 = 36
x (questions you correctly answered) = 36
Other Way to Solve:
If that way of solving is too complicated, you can always do this:
8/10 x 45/1
8 x 45 = 360
10 x 1 = 10
360/10 = 36
Ответ:
11- is B
Step-by-step explanation: I know thins because I did eduenuty
Ответ:
Your answer is 120!
Step-by-step explanation:
PEMDAS
92 + 33 - 30 ÷ 6
= 92 + 33 - 5
= 125 - 5
= 120