Answer:
. Multiply 15 by 1, then divide by 5
36 - (-20) = 56
SO the number that should be added to -20 to get the answer of 36 is 56.
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Answer:
The answer to your question is: 24 561 104 bacteria
Step-by-step explanation:
every 16 minutes bacteria population double
There are 6140276 bacteria at 9:15 AM
estimate bacteria at 9:47
First calculate the minutes : 47 - 15 = 32 minutes
and 32 / 16 = 2
then 2 times the bacteria population double
So,
first time = 6140276 x 2 = 1 2280552 bacteria
second time = 1 2280552 x 2 = 24561104 bacteria
Answer:
There were 3 adults
Step-by-step explanation:
Step 1: Derive the first expression
a+c=10...equation 1
where;
a=number of adults
c=number of children
And total number of people=10
Step 2: Derive the second expression;
Total cost of tickets=(price per child ticket×number of children)+(price per adult ticket×number of adults)
where;
Total cost of tickets=$186.50
price per child ticket=$15.95
price per adult ticket=$24.95
number of children=c
number of adults=a
replacing;
(15.95×c)+(24.95×a)=186.5
24.95 a+15.95 c=186.5....equation 2
Step 3: Combine equation 1 and 2 and solve simultaneously
24.95 a+15.95 c=186.5
-
24.95(a+c=10)
(24.95 a-24.95 a)+(15.95 c-24.95 c)=186.5-(24.95×10)
-9 c=-63
c=-63/-9
c=7
replace the value for c in equation 1
a+c=10
a+7=10
a=10-7
a=3
There were 3 adults
