In a 3-hr examination of 320 questions, there are 40 mathematics problems. if twice as much time should be allowed for each math ematics problems as for each of the other questions, how many minutes should be spent on mathematics problems?
2 answers:
Total questions = 320 Answer: 1 min should be spent on Mathematics problems
Answer:
1 minute should be spent on each math problem
Step-by-step explanation:
Total questions = 320
Mathematics problems = 40
Non-mathematics problem = 320 - 40 = 280
Twice the amount of time is needed for mathematics problem.
40 x 2x + 280 x = 3 hours
80x + 280x = 3 hours
360x = 180 mins
x = 0.5 mins
2x = 0.5 x 2 = 1 min
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Answer:
y=4x-22
Step-by-step explanation:
Equate real part and imaginary part:
LHS:
real part -- 12
imaginary part -- 5y
RHS:
real part = 4x
imaginary part = 25
Equating::
12 = 4x
x = 12/4
x = 3
Again:
5y = 25
y = 25/5
y = 5
So,
x = 3
y = 5
Answer:
the answer is triangle GBL
Yes your correct hope this helps
Answer:
10y - 3
Step-by-step explanation:
Write "10y minus 3" symbolically: 10y - 3
