Answer: 99 insects altogether.
Step-by-step explanation:
Adding two numbers add a time is easiest, rather than adding all four numbers together.
First, add 37 + 39 =. 76
add 12 to that sum, which equals 88.
76+12=88
to that sum, add the final number, 11.
88+11=99
so there are 99 bugs altogether.
1/23 = 0.043
I hope this helps :)
Answer: First half was 24 minutes
Step-by-step explanation:
Let the time taken to finish the second half be y.
Since the student used 2/3 of the second half time to finish the first half, first half = 2/3 × y = 2y/3
The entire exam is an hour which equals 60 minutes
First half + Second half = 60minutes
Note that first half is denoted as 2y/3 and second half is denoted by y.
2y/3 + y = 60
5y/3 = 60
Cross multiply
5y = 60 × 3
5y = 180
y = 180/5
y = 36
Second half took 36 minutes
Since first half is 2y/3, it will be:
(2×36) / 3
= 72/3
= 24minutes
First half took 24 minutes.
it would be 9.93300
so 3 decimal places because the zeros don't count
